A graphics card (also called a video card, display card, graphics adapter, VGA card/VGA, video adapter, display adapter, or mistakenly GPU) is an
expansion card which generates a feed of output images to a
display device
A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information that is supplied has an electrical signal the ...
, such as a
computer monitor. Graphics cards are sometimes called discrete or dedicated graphics cards to emphasize their distinction to
integrated graphics. A
graphics processing unit
A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, m ...
that performs the necessary computations is the main component of a graphics card, but the
acronym
An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in ''NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, as ...
"GPU" is sometimes also used to refer to the graphics card as a whole.
Most graphics cards are not limited to simple display output. The graphics processing unit can be used for additional processing, which reduces the load from the
central processing unit
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, a ...
. Additionally, computing platforms such as
OpenCL
OpenCL (Open Computing Language) is a software framework, framework for writing programs that execute across heterogeneous computing, heterogeneous platforms consisting of central processing units (CPUs), graphics processing units (GPUs), d ...
and
CUDA
CUDA (or Compute Unified Device Architecture) is a parallel computing platform and application programming interface (API) that allows software to use certain types of graphics processing units (GPUs) for general purpose processing, an approach ...
allow using graphics cards for
general-purpose computing. Applications of general-purpose computing on graphics cards include
AI training,
cryptocurrency mining
A cryptocurrency, crypto-currency, or crypto is a digital currency designed to work as a medium of exchange through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it. It ...
, and
molecular simulation.
Usually, a ''graphics card'' comes in the form of a printed circuit board (expansion board) which are to be inserted into an expansion slot. Others may have dedicated enclosures, and they are connected to the computer via a
docking station
In computing, a docking station or port replicator (hub) or dock provides a simplified way to ''plug-in'' a mobile device, such as a laptop, to common peripherals. Because a wide range of dockable devices—from mobile phones to wireless mou ...
or a cable. These are known as external GPUs (eGPUs).
Graphics cards are often preferred over integrated graphics for increased performance.
History
Graphics cards historically supported different
computer display standards
Computer display standards are a combination of aspect ratio, display size, display resolution, color depth, and refresh rate. They are associated with specific expansion cards, video connectors and monitors.
History
Various computer dis ...
as they evolved. For the
IBM PC compatibles
IBM PC compatible computers are similar to the original IBM PC, XT, and AT, all from computer giant IBM, that are able to use the same software and expansion cards. Such computers were referred to as PC clones, IBM clones or IBM PC clones. ...
, common early standards were
MDA,
CGA,
Hercules
Hercules (, ) is the Roman equivalent of the Greek divine hero Heracles, son of Jupiter and the mortal Alcmena. In classical mythology, Hercules is famous for his strength and for his numerous far-ranging adventures.
The Romans adapted the ...
,
EGA and
VGA
Video Graphics Array (VGA) is a video display controller and accompanying de facto graphics standard, first introduced with the IBM PS/2 line of computers in 1987, which became ubiquitous in the PC industry within three years. The term can now ...
.
In the late 1980s the like of
Radius
In classical geometry, a radius (plural, : radii) of a circle or sphere is any of the line segments from its Centre (geometry), center to its perimeter, and in more modern usage, it is also their length. The name comes from the latin ''radius'', ...
produced graphics cards for the Apple
Macintosh II
The Macintosh II is a personal computer designed, manufactured, and sold by Apple Computer from March 1987 to January 1990. Based on the Motorola 68020 32-bit CPU, it is the first Macintosh supporting color graphics. When introduced, a basic s ...
with discrete 2D
QuickDraw capabilities.
3dfx Interactive was one of the first companies to develop a consumer-facing GPU with 3D acceleration (with the Voodoo series) and the first to develop a graphical chipset dedicated to 3D, but without 2D support (which therefore required the presence of a 2D card to work).
NVIDIA
RIVA 128 was one of the first consumer-facing GPU integrated 3D processing unit and 2D processing unit on a chip.
Nowadays, the majority of modern graphics cards are built with either
AMD-sourced or
Nvidia
Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
-sourced graphics chips.
Most graphics cards offer various functions such as
3D rendering,
2D graphics, MPEG-2/MPEG-4 decoding, TV output, and the ability to connect multiple monitors (
multi-monitor). Graphics cards also have
sound card capabilities to output sound along with video output for connected TVs or monitors with integrated speakers.
Within the industry, graphics cards are sometimes called ''graphics add-in-boards'', abbreviated as ''AIB''s,
with the word "graphics" usually omitted.
Discrete vs integrated graphics
As an alternative to the use of a graphics card, video hardware can be integrated into the
motherboard,
CPU
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, a ...
, or a
system-on-chip as integrated graphics. Motherboard-based implementations are sometimes called "on-board video". Some motherboards support using both integrated graphics and the graphics card simultaneously to feed separate displays. The main advantages of integrated graphics are: a low cost, compactness, simplicity, and low energy consumption. Integrated graphics often has less performance than a graphics card because the graphics processing unit inside integrated graphics needs to share system resources with the CPU. On the other hand, a graphics card has a separate
random access memory
Random-access memory (RAM; ) is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code. A random-access memory device allows data items to be read or written in almost the ...
(RAM), cooling system, and dedicated power regulators. A graphics card can offload work and reduce
memory-bus-contention from the CPU and system RAM, therefore the overall performance for a computer could improve in addition to increased performance in graphics processing. Such improvements to performance can be seen in
video gaming,
3D animation, and
video editing.
Both AMD and Intel have introduced CPUs and motherboard chipsets which support the integration of a GPU into the same die as the CPU. AMD advertises CPUs with integrated graphics under the trademark
Accelerated Processing Unit (APU), while Intel brands similar technology under "
Intel Graphics Technology".
Power demand
As the processing power of graphics cards increased, so did their demand for electrical power. Current high-performance graphics cards tend to consume large amounts of power. For example, the thermal design power (TDP) for the GeForce Titan RTX is 280
watts
Watts is plural for ''watt'', the unit of power.
Watts may also refer to:
People
* Watts (surname), list of people with the surname Watts Fictional characters
*Watts, main character in the film '' Some Kind of Wonderful''
* Watts family, six cha ...
. When tested with video games, the GeForce RTX 2080 Ti Founder's Edition averaged 300 watts of power consumption. While CPU and
power supply
A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As ...
manufacturers have recently aimed toward higher efficiency, power demands of graphics cards continued to rise, with the largest power consumption of any individual part in a computer. Although power supplies have also increased their power output, the
bottleneck
Bottleneck literally refers to the narrowed portion (neck) of a bottle near its opening, which limit the rate of outflow, and may describe any object of a similar shape. The literal neck of a bottle was originally used to play what is now known as ...
occurs in the
PCI-Express connection, which is limited to supplying 75 watts.
Modern graphics cards with a power consumption of over 75 watts usually include a combination of six-pin (75 W) or eight-pin (150 W) sockets that connect directly to the power supply. Providing adequate cooling becomes a challenge in such computers. Computers with multiple graphics cards may require power supplies over 750 watts. Heat extraction becomes a major design consideration for computers with two or more high-end graphics cards.
As of the
Nvidia
Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
GeForce RTX 30 series,
Ampere architecture, a custom flashed RTX 3090 named "Hall of Fame" has been recorded to reach a peak power draw as high as 630 watts. A standard RTX 3090 can peak at up to 450 watts. The RTX 3080 can reach up to 350 watts, while a 3070 can reach a similar, if not slightly lower peak power draw. Ampere cards are the first cards to feature a pass through cooler design to dissipate as much heat as possible, especially with large power consumptions.
Size
Graphics cards for desktop computers have different size profiles, which allows graphics cards to be added to smaller-sized computers. Some graphics cards are not of the usual size, and are named as "low profile". Graphics card profiles are based on height only, with low-profile cards taking up less than the height of a PCIe slot, some can be as low as "half-height". Length and thickness can vary greatly, with high-end cards usually occupying two or three expansion slots, and with dual-GPU cards such as the Nvidia GeForce GTX 690 generally exceeding in length. A lower profile card is preferred when trying to fit multiple cards or if graphics cards run into clearance issues with other motherboard components like the DIMM or PCIE slots. This can be fixed with a larger
computer case such as mid-tower or full tower. Full towers are usually able to fit larger motherboards in sizes like ATX and micro ATX.
Multicard scaling
Some graphics cards can be linked together to allow scaling graphics processing across multiple cards. This is done using either the PCIe bus on the motherboard or, more commonly, a data bridge. Generally, the cards must be of the same model to be linked, and most low end cards are not able to be linked in this way. AMD and Nvidia both have proprietary scaling methods,
CrossFireX
AMD CrossFire (also known as CrossFireX) is a brand name for the multi- GPU technology by Advanced Micro Devices, originally developed by ATI Technologies. The technology allows up to four GPUs to be used in a single computer to improve graphi ...
for AMD, and
SLI (since the
Turing generation, superseded by
NVLink) for Nvidia. Cards from different chip-set manufacturers or architectures cannot be used together for multi-card scaling. If graphics cards have different sizes of memory, the lowest value will be used, with the higher values disregarded. Currently, scaling on consumer-grade cards can be done using up to four cards. The use of four cards requires a large motherboard with a proper configuration. Nvidia's GeForce GTX 590 graphics card can be configured in a four-card configuration. As stated above, users will want to stick to cards with the same performances for optimal use. Motherboards including ASUS Maximus 3 Extreme and Gigabyte GA EX58 Extreme are certified to work with this configuration.
A large power supply is necessary to run the cards in SLI or CrossFireX. Power demands must be known before a proper supply is installed. For the four card configuration, a 1000+ watt supply is needed.
With any relatively powerful graphics card, thermal management cannot be ignored. Graphics cards require well-vented chassis and good thermal solutions. Air or water cooling are usually required, though low end GPUs can use passive cooling. Larger configurations use
water solution
An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, or sodium chloride (NaCl), in water would b ...
s or immersion cooling to achieve proper performance without thermal throttling.
SLI and Crossfire have become increasingly uncommon as most games do not fully utilize multiple GPUs, due to the fact that most users cannot afford them. Multiple GPUs are still used on supercomputers (like in
Summit), on workstations to accelerate video and 3D rendering,
visual effects
Visual effects (sometimes abbreviated VFX) is the process by which imagery is created or manipulated outside the context of
a live-action shot in filmmaking and video production.
The integration of live-action footage and other live-action foota ...
, for simulations, and in training artificial intelligence.
3D graphics APIs
A graphics driver usually supports one or multiple cards by the same vendor and has to be written for a specific operating system. Additionally, the operating system or an extra software package may provide certain programming
APIs for applications to perform 3D rendering.
Specific usage
Some GPUs are designed with specific usage in mind:
# Gaming
#*
GeForce GTX
#*
GeForce RTX
#*
Nvidia Titan
#*
Radeon HD
#*
Radeon RX
#
Cloud gaming
#*
Nvidia Grid
Nvidia GRID is a family of graphics processing units (GPUs) made by Nvidia, introduced in 2008, that is targeted specifically towards cloud gaming. The Nvidia GRID includes both graphics processing and video encoding
In information theory, da ...
#*
Radeon Sky
# Workstation
#*
Nvidia Quadro
#*
AMD FirePro
#*
Radeon Pro
# Cloud Workstation
#*
Nvidia Tesla
#*
AMD FireStream
AMD FireStream was AMD's brand name for their Radeon-based product line targeting stream processing and/or GPGPU in supercomputers. Originally developed by ATI Technologies around the Radeon X1900 XTX in 2006, the product line was previously ...
# Artificial Intelligence Cloud
#*
Nvidia Tesla
#*
Radeon Instinct
AMD Instinct is AMD's brand of professional GPUs. It replaced AMD's FirePro S brand in 2016. Compared to the Radeon brand of mainstream consumer/gamer products, the Instinct product line is intended to accelerate deep learning, artificial neu ...
# Automated/Driverless car
#*
Nvidia Drive PX
Industry
As of 2016, the primary suppliers of the GPUs (graphics chips or chipsets) used in graphics cards are AMD and Nvidia. In the third quarter of 2013, AMD had a 35.5% market share while Nvidia had 64.5%,
according to Jon Peddie Research. In economics, this industry structure is termed a
duopoly. AMD and Nvidia also build and sell graphics cards, which are termed graphics add-in-boards (AIBs) in the industry. (See
Comparison of Nvidia graphics processing units
This list contains general information about graphics processing units (GPUs) and video cards from Nvidia, based on official specifications. In addition some Nvidia motherboards come with integrated onboard GPUs. Limited/Special/Collectors' Editio ...
and
Comparison of AMD graphics processing units.) In addition to marketing their own graphics cards, AMD and Nvidia sell their GPUs to authorized AIB suppliers, which AMD and Nvidia refer to as "partners".
The fact that Nvidia and AMD compete directly with their customer/partners complicates relationships in the industry. AMD and Intel being direct competitors in the CPU industry is also noteworthy, since AMD-based graphics cards may be used in computers with Intel CPUs. Intel's
integrated graphics may weaken AMD, in which the latter derives a significant portion of its revenue from its
APUs
Apus is a small constellation in the southern sky. It represents a bird-of-paradise, and its name means "without feet" in Greek because the bird-of-paradise was once wrongly believed to lack feet. First depicted on a celestial globe by Pet ...
. As of the second quarter of 2013, there were 52 AIB suppliers.
These AIB suppliers may market graphics cards under their own brands, produce graphics cards for private label brands, or produce graphics cards for computer manufacturers. Some AIB suppliers such as
MSI build both AMD-based and Nvidia-based graphics cards. Others, such as
EVGA, build only Nvidia-based graphics cards, while
XFX
XFX Inc. is a Chinese electronics company that specializes in the manufacturing of video cards, power supplies and motherboards. XFX has its headquarters in Ontario, California, and is a division of Hong Kong-based Pine Technology Holdings Limit ...
, now builds only AMD-based graphics cards. Several AIB suppliers are also motherboard suppliers. Most of the largest AIB suppliers are based in Taiwan and they include
ASUS,
MSI,
GIGABYTE
The gigabyte () is a multiple of the unit byte for digital information. The prefix '' giga'' means 109 in the International System of Units (SI). Therefore, one gigabyte is one billion bytes. The unit symbol for the gigabyte is GB.
This definit ...
, and
Palit. Hong-Kong-based AIB manufacturers include
Sapphire
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide () with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. The name sapphire is derived via the Latin "sa ...
and
Zotac. Sapphire and Zotac also sell graphics cards exclusively for AMD and Nvidia GPUs respectively.
The United States is also home to
EVGA, and
XFX
XFX Inc. is a Chinese electronics company that specializes in the manufacturing of video cards, power supplies and motherboards. XFX has its headquarters in Ontario, California, and is a division of Hong Kong-based Pine Technology Holdings Limit ...
which sell graphics cards exclusively for Nvidia and AMD respectively.
Market
Graphics card shipments peaked at a total of 114 million in 1999. By contrast, they totaled 14.5 million units in the third quarter of 2013, a 17% fall from Q3 2012 levels.
Shipments reached an annual total of 44 million in 2015. The sales of graphics cards have trended downward due to improvements in integrated graphics technologies; high-end, CPU-integrated graphics can provide competitive performance with low-end graphics cards. At the same time, graphics card sales have grown within the high-end segment, as manufacturers have shifted their focus to prioritize the gaming and enthusiast market.
Beyond the gaming and multimedia segments, graphics cards have been increasingly used for
general-purpose computing, such as
big data
Though used sometimes loosely partly because of a lack of formal definition, the interpretation that seems to best describe Big data is the one associated with large body of information that we could not comprehend when used only in smaller am ...
processing. The growth of
cryptocurrency has placed a severely high demand on high-end graphics cards, especially in large quantities, due to their advantages in the process of cryptocurrency mining. In January 2018, mid-to-high-end graphics cards experienced a major surge in price, with many retailers having stock shortages due to the significant demand among this market.
Graphics card companies released mining-specific cards designed to run
24 hours a day, seven days a week
In commerce and industry, 24/7 or 24-7 service (usually pronounced "twenty-four seven") is service that is available at any time and usually, every day. An alternate orthography for the numerical part includes 24×7 (usually pronounced "twenty ...
, and without video output ports.
The graphics card industry took a setback due to the
2020-21 chip shortage.
Parts
A modern graphics card consists of a
printed circuit board
A printed circuit board (PCB; also printed wiring board or PWB) is a medium used in electrical and electronic engineering to connect electronic components to one another in a controlled manner. It takes the form of a laminated sandwich str ...
on which the components are mounted. These include:
Graphics processing unit
A graphics processing unit (GPU), also occasionally called visual processing unit (VPU), is a specialized
electronic circuit
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electric ...
designed to rapidly manipulate and alter memory to accelerate the building of images in a
frame buffer intended for output to a display. Because of the large degree of programmable computational complexity for such a task, a modern graphics card is also a computer unto itself.
Heat sink
A
heat sink
A heat sink (also commonly spelled heatsink) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, ...
is mounted on most modern graphics cards. A heat sink spreads out the heat produced by the graphics processing unit evenly throughout the heat sink and unit itself. The heat sink commonly has a fan mounted to cool the heat sink and the graphics processing unit. Not all cards have heat sinks, for example, some cards are liquid-cooled and instead have a water block; additionally, cards from the 1980s and early 1990s did not produce much heat, and did not require heat sinks. Most modern graphics cards need proper thermal solutions. They can be
water-cooled
Cooling tower and water discharge of a nuclear power plant
Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and n ...
or through heat sinks with additional connected heat pipes usually made of copper for the best thermal transfer.
Video BIOS
The
video BIOS or
firmware contains a minimal program for the initial set up and control of the graphics card. It may contain information on the memory and memory timing, operating speeds and voltages of the graphics processor, and other details which can sometimes be changed.
Modern Video BIOSes do not support full functionalities of graphics cards; they are only sufficient to identify and initialize the card to display one of a few frame buffer or text display modes. It does not support
YUV to
RGB translation, video scaling, pixel copying, compositing or any of the multitude of other 2D and 3D features of the graphics card, which must be accessed by software drivers.
Video memory
The memory capacity of most modern graphics cards ranges from 2
GB to 24 GB. But with up to 32 GB as of the last 2010s, the applications for graphics use are becoming more powerful and widespread. Since video memory needs to be accessed by the GPU and the display circuitry, it often uses special high-speed or multi-port memory, such as
VRAM,
WRAM,
SGRAM, etc. Around 2003, the video memory was typically based on
DDR technology. During and after that year, manufacturers moved towards
DDR2,
GDDR3,
GDDR4,
GDDR5,
GDDR5X, and
GDDR6. The effective memory clock rate in modern cards is generally between 2
GHz to 15 GHz.
Video memory may be used for storing other data as well as the screen image, such as the
Z-buffer
A depth buffer, also known as a z-buffer, is a type of data buffer used in computer graphics to represent depth information of objects in 3D space from a particular perspective. Depth buffers are an aid to rendering a scene to ensure that the ...
, which manages the depth coordinates in
3D graphics,
textures,
vertex buffers, and compiled
shader programs.
RAMDAC
The
RAMDAC, or random-access-memory digital-to-analog converter, converts
digital signal
A digital signal is a signal that represents data as a sequence of discrete values; at any given time it can only take on, at most, one of a finite number of values. This contrasts with an analog signal, which represents continuous values; a ...
s to
analog signals for use by a computer display that uses analog inputs such as
cathode-ray tube (CRT) displays. The RAMDAC is a kind of RAM chip that regulates the functioning of the graphics card. Depending on the number of
bits used and the RAMDAC-data-transfer rate, the converter will be able to support different computer-display refresh rates. With CRT displays, it is best to work over 75
Hz and never under 60 Hz, to minimize flicker.
(With LCD displays, flicker is not a problem) Due to the growing popularity of digital computer displays and the integration of the RAMDAC onto the GPU die, it has mostly disappeared as a discrete component. All current LCD/plasma monitors and TVs and projectors with only digital connections, work in the digital domain and do not require a RAMDAC for those connections. There are displays that feature analog inputs (
VGA
Video Graphics Array (VGA) is a video display controller and accompanying de facto graphics standard, first introduced with the IBM PS/2 line of computers in 1987, which became ubiquitous in the PC industry within three years. The term can now ...
, component,
SCART
SCART (also known as or , especially in France, 21-pin EuroSCART in marketing by Sharp in Asia, Euroconector in Spain, EuroAV or EXT, or EIA Multiport in the United States, as an EIA interface) is a French-originated standard and associated 21- ...
, etc.) ''only''. These require a RAMDAC, but they reconvert the analog signal back to digital before they can display it, with the unavoidable loss of quality stemming from this digital-to-analog-to-digital conversion. With VGA standard being phased out in favor of digital, RAMDACs are beginning to disappear from graphics cards.
Output interfaces
The most common connection systems between the graphics card and the computer display are:
Video Graphics Array (VGA) (DE-15)
Also known as D-sub, VGA is an analog-based standard adopted in the late 1980s designed for CRT displays, also called
VGA connector. Some problems of this standard are
electrical noise,
image distortion and
sampling error in evaluating pixels.
Today, the VGA analog interface is used for high definition video including
1080p
1080p (1920×1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen ve ...
and higher. While the VGA transmission bandwidth is high enough to support even higher resolution playback, the picture quality can degrade depending on cable quality and length. The extent of quality difference depends on the individual's eyesight and the display; when using a DVI or HDMI connection, especially on larger sized LCD/LED monitors or TVs, quality degradation, if present, is prominently visible.
Blu-ray
The Blu-ray Disc (BD), often known simply as Blu-ray, is a digital optical disc data storage format. It was invented and developed in 2005 and released on June 20, 2006 worldwide. It is designed to supersede the DVD format, and capable of st ...
playback at 1080p is possible via the VGA analog interface, if
Image Constraint Token (ICT) is not enabled on the Blu-ray disc.
Digital Visual Interface (DVI)
Digital Visual Interface is a digital-based standard designed for displays such as flat-panel displays (
LCDs, plasma screens, wide
high-definition television
High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the g ...
displays) and video projectors. In some rare cases, high-end CRT monitors also use DVI. It avoids image distortion and electrical noise, corresponding each pixel from the computer to a display pixel, using its
native resolution. It is worth noting that most manufacturers include a DVI-I connector, allowing (via simple adapter) standard RGB signal output to an old CRT or LCD monitor with VGA input.
Video-in video-out (VIVO) for S-Video, composite video and component video
These connectors are included to allow connection with
television
Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, ...
s,
DVD player
A DVD player is a device that plays DVDs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards. Some DVD players will also play audio CDs. DVD players are connected to a television to ...
s,
video recorders and
video game consoles. They often come in two 10-pin
mini-DIN connector
The mini-DIN connectors are a family of multi-pin electrical connectors used in a variety of applications. Mini-DIN is similar to the larger, older DIN connector.
Design
Mini-DIN connectors are in diameter and come in seven patterns, wit ...
variations, and the VIVO splitter cable generally comes with either 4 connectors (
S-Video
S-Video (also known as separate video, Y/C, and erroneously Super-Video ) is an analog video signal format that carries standard-definition video, typically at 525 lines or 625 lines. It encodes video luma and chrominance on two separate chann ...
in and out +
composite video in and out), or 6 connectors (S-Video in and out +
component
Circuit Component may refer to:
•Are devices that perform functions when they are connected in a circuit.
In engineering, science, and technology Generic systems
* System components, an entity with discrete structure, such as an assem ...
P
B out + component P
R out + component Y out
lso composite out+ composite in).
High-Definition Multimedia Interface (HDMI)
HDMI is a compact audio/video interface for transferring
uncompressed video data and compressed/uncompressed digital
audio
Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to:
Sound
*Audio signal, an electrical representation of sound
*Audio frequency, a frequency in the audio spectrum
* Digital audio, representation of sou ...
data from an HDMI-compliant device ("the source device") to a compatible
digital audio device,
computer monitor,
video projector, or
digital television
Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative adva ...
.
HDMI is a digital replacement for existing
analog video standards. HDMI supports
copy protection
Copy protection, also known as content protection, copy prevention and copy restriction, describes measures to enforce copyright by preventing the reproduction of software, films, music, and other media.
Copy protection is most commonly found o ...
through
HDCP
High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections. Types of connections include DisplayPor ...
.
DisplayPort
DisplayPort is a digital display interface developed by the
Video Electronics Standards Association (VESA). The interface is primarily used to connect a video source to a
display device
A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information that is supplied has an electrical signal the ...
such as a
computer monitor, though it can also be used to transmit audio, USB, and other forms of data.
The VESA specification is
royalty-free. VESA designed it to replace
VGA
Video Graphics Array (VGA) is a video display controller and accompanying de facto graphics standard, first introduced with the IBM PS/2 line of computers in 1987, which became ubiquitous in the PC industry within three years. The term can now ...
,
DVI
Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source, such as a video display controller, to a display device, such as a comp ...
, and
LVDS. Backward compatibility to VGA and DVI by using adapter
dongles
A dongle is a small piece of computer hardware that connects to a port on another device to provide it with additional functionality, or enable a pass-through to such a device that adds functionality.
In computing, the term was initially synonym ...
enables consumers to use DisplayPort fitted video sources without replacing existing display devices. Although DisplayPort has a greater throughput of the same functionality as
HDMI
High-Definition Multimedia Interface (HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controlle ...
, it is expected to complement the interface, not replace it.
USB-C
Other types of connection systems
Motherboard interfaces
Chronologically, connection systems between graphics card and motherboard were, mainly:
*
S-100 bus: Designed in 1974 as a part of the Altair 8800, it is the first industry-standard bus for the microcomputer industry.
*
ISA
Isa or ISA may refer to:
Places
* Isa, Amur Oblast, Russia
* Isa, Kagoshima, Japan
* Isa, Nigeria
* Isa District, Kagoshima, former district in Japan
* Isa Town, middle class town located in Bahrain
* Mount Isa, Queensland, Australia
* Mount ...
: Introduced in 1981 by
IBM, it became dominant in the marketplace in the 1980s. It is an
8- or
16-bit
16-bit microcomputers are microcomputers that use 16-bit microprocessors.
A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used. With the two ...
bus clocked at 8 MHz.
*
NuBus
NuBus (pron. 'New Bus') is a 32-bit parallel computer bus, originally developed at MIT and standardized in 1987 as a part of the NuMachine workstation project. The first complete implementation of the NuBus was done by Western Digital fo ...
: Used in
Macintosh II
The Macintosh II is a personal computer designed, manufactured, and sold by Apple Computer from March 1987 to January 1990. Based on the Motorola 68020 32-bit CPU, it is the first Macintosh supporting color graphics. When introduced, a basic s ...
, it is a
32-bit
In computer architecture, 32-bit computing refers to computer systems with a processor, memory, and other major system components that operate on data in 32- bit units. Compared to smaller bit widths, 32-bit computers can perform large calculati ...
bus with an average bandwidth of 10 to 20 MB/s.
*
MCA
MCA may refer to:
Astronomy
* Mars-crossing asteroid, an asteroid whose orbit crosses that of Mars
Aviation
* Minimum crossing altitude, a minimum obstacle crossing altitude for fixes on published airways
* Medium Combat Aircraft, a 5th gen ...
: Introduced in 1987 by IBM it is a 32-bit bus clocked at 10 MHz.
*
EISA: Released in 1988 to compete with IBM's MCA, it was compatible with the earlier ISA bus. It is a 32-bit bus clocked at 8.33 MHz.
*
VLB: An extension of ISA, it is a 32-bit bus clocked at 33 MHz. Also referred to as VESA.
*
PCI: Replaced the EISA, ISA, MCA and VESA buses from 1993 onwards. PCI allowed dynamic connectivity between devices, avoiding the manual adjustments required with
jumpers. It is a 32-bit bus clocked 33 MHz.
*
UPA: An interconnect bus architecture introduced by
Sun Microsystems
Sun Microsystems, Inc. (Sun for short) was an American technology company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, t ...
in 1995. It is a
64-bit
In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit CPUs and ALUs are those that are based on processor registers, address buses, or data buses of that size. A ...
bus clocked at 67 or 83 MHz.
*
USB: Although mostly used for miscellaneous devices, such as
secondary storage devices or peripherals and
toys, USB displays and display adapters exist. It was first used in 1996.
*
AGP: First used in 1997, it is a dedicated-to-graphics bus. It is a 32-bit bus clocked at 66 MHz.
*
PCI-X: An extension of the PCI bus, it was introduced in 1998. It improves upon PCI by extending the width of bus to 64 bits and the clock frequency to up to 133 MHz.
*
PCI Express: Abbreviated as PCIe, it is a point-to-point interface released in 2004. In 2006, it provided a data-transfer rate that is double of AGP. It should not be confused with
PCI-X, an enhanced version of the original PCI specification. This is standard for most graphics cards.
The following table is a comparison between features of some interfaces listed above.
See also
*
List of computer hardware
*
List of graphics card manufacturers
*
Computer display standards
Computer display standards are a combination of aspect ratio, display size, display resolution, color depth, and refresh rate. They are associated with specific expansion cards, video connectors and monitors.
History
Various computer dis ...
– a detailed list of standards like SVGA, WXGA, WUXGA, etc.
*
AMD (
ATI
Ati or ATI may refer to:
* Ati people, a Negrito ethnic group in the Philippines
**Ati language (Philippines), the language spoken by this people group
** Ati-Atihan festival, an annual celebration held in the Philippines
*Ati language (China), a ...
),
Nvidia
Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
– quasi duopoly of 3D chip
GPU and graphics card designers
*
GeForce,
Radeon – examples of popular graphics card series
*
GPGPU (i.e.:
CUDA
CUDA (or Compute Unified Device Architecture) is a parallel computing platform and application programming interface (API) that allows software to use certain types of graphics processing units (GPUs) for general purpose processing, an approach ...
,
AMD FireStream
AMD FireStream was AMD's brand name for their Radeon-based product line targeting stream processing and/or GPGPU in supercomputers. Originally developed by ATI Technologies around the Radeon X1900 XTX in 2006, the product line was previously ...
)
*
Framebuffer – the computer memory used to store a screen image
*
Capture card – the inverse of a graphics card
References
Sources
* Mueller, Scott (2005) ''Upgrading and Repairing PCs''. 16th edition. Que Publishing.
External links
*
{{DEFAULTSORT:Video Card
Graphics hardware