Graphics DDR SDRAM (GDDR SDRAM) is a type of
synchronous dynamic random-access memory
Synchronous dynamic random-access memory (synchronous dynamic RAM or SDRAM) is any DRAM where the operation of its external pin interface is coordinated by an externally supplied clock signal.
DRAM integrated circuits (ICs) produced from the ...
(SDRAM) specifically designed for applications requiring high bandwidth, e.g.
graphics processing unit
A graphics processing unit (GPU) is a specialized electronic circuit designed for digital image processing and to accelerate computer graphics, being present either as a discrete video card or embedded on motherboards, mobile phones, personal ...
s (GPUs). GDDR SDRAM is distinct from the more widely known types of
DDR SDRAM
Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM) is a double data rate (DDR) synchronous dynamic random-access memory (SDRAM) class of memory integrated circuits used in computers. DDR SDRAM, also retroactively called DDR ...
, such as
DDR4 and
DDR5, although they share some of the same features—including
double data rate
In computing, double data rate (DDR) describes a computer bus that transfers data on both the rising and falling edges of the clock signal and hence doubles the memory bandwidth by transferring data twice per clock cycle. This is also known a ...
(DDR) data transfers. , GDDR SDRAM has been succeeded by
GDDR2,
GDDR3,
GDDR4,
GDDR5
Graphics Double Data Rate 5 Synchronous Dynamic Random-Access Memory (GDDR5 SDRAM) is a type of synchronous graphics random-access memory (SGRAM) with a high bandwidth ("double data rate") interface designed for use in graphics cards, game con ...
,
GDDR5X
Graphics Double Data Rate 5 Synchronous Dynamic Random-Access Memory (GDDR5 SDRAM) is a type of synchronous graphics random-access memory (SGRAM) with a high bandwidth ("double data rate") interface designed for use in graphics cards, game con ...
,
GDDR6
Graphics Double Data Rate 6 Synchronous Dynamic Random-Access Memory (GDDR6 SDRAM) is a type of synchronous graphics random-access memory (SGRAM) with a high bandwidth, "double data rate" interface, designed for use in graphics cards, game con ...
,
GDDR6X
Graphics Double Data Rate 6 Synchronous Dynamic Random-Access Memory (GDDR6 SDRAM) is a type of Synchronous dynamic random-access memory#Synchronous graphics RAM .28SGRAM.29, synchronous graphics random-access memory (SGRAM) with a high Bandwidth ...
,
GDDR6W
Graphics Double Data Rate 6 Synchronous Dynamic Random-Access Memory (GDDR6 SDRAM) is a type of synchronous graphics random-access memory (SGRAM) with a high bandwidth, "double data rate" interface, designed for use in graphics cards, game con ...
and
GDDR7.
Generations
File:ATI Radeon X1300 256MB - Hynix HY5DU561622CTP-5-5390.jpg, Hynix GDDR SDRAM
File:SAMSUNG@QDDR3-SDRAM@256MBit@K5J55323QF-GC16 Stack-DSC01234-DSC01284 - ZS-retouched.jpg, A Samsung GDDR3 256MBit package
File:Sapphire Ultimate HD 4670 512MB - Qimonda HYB18H512321BF-10-93577.jpg, A 512 MBit Qimonda
Qimonda Aktiengesellschaft, AG ( ) was a German DRAM, memory company split out of Infineon Technologies (itself a spun off business unit of Siemens AG) on 1 May 2006 to form at the time the second largest DRAM company worldwide, according to the ...
GDDR3 SDRAM package
File:SAMSUNG@QDDR3-SDRAM@256MBit@K5J55323QF-GC16 Stack-DSC01340-DSC01367 - ZS-retouched.jpg, Inside a Samsung GDDR3 256MBit package
DDR SGRAM
GDDR was initially known as
DDR SGRAM
Synchronous dynamic random-access memory (synchronous dynamic RAM or SDRAM) is any DRAM where the operation of its external pin interface is coordinated by an externally supplied clock signal.
DRAM integrated circuits (ICs) produced from the ea ...
(double data rate synchronous graphics RAM). It was commercially introduced as a 16
Mb memory chip by
Samsung Electronics
Samsung Electronics Co., Ltd. (SEC; stylized as SΛMSUNG; ) is a South Korean multinational major appliance and consumer electronics corporation founded on 13 January 1969 and headquartered in Yeongtong District, Suwon, South Korea. It is curr ...
in 1998.
GDDR2
GDDR3
GDDR4
GDDR5
GDDR6
GDDR7
Table of transfer rates
See also
*
Video random access memory
*
Double data rate
In computing, double data rate (DDR) describes a computer bus that transfers data on both the rising and falling edges of the clock signal and hence doubles the memory bandwidth by transferring data twice per clock cycle. This is also known a ...
References
SDRAM
Graphics cards
South Korean inventions
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