Uncacheable speculative write combining (USWC), is a
computer
A computer is a machine that can be Computer programming, programmed to automatically Execution (computing), carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic set ...
BIOS
In computing, BIOS (, ; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is a type of firmware used to provide runtime services for operating systems and programs and to perform hardware initialization d ...
setting for memory communication between a
CPU
A central processing unit (CPU), also called a central processor, main processor, or just processor, is the primary processor in a given computer. Its electronic circuitry executes instructions of a computer program, such as arithmetic, log ...
and
graphics card
A graphics card (also called a video card, display card, graphics accelerator, graphics adapter, VGA card/VGA, video adapter, display adapter, or colloquially GPU) is a computer expansion card that generates a feed of graphics output to a displa ...
.
It allows faster communication than the "uncachable" setting (the alternative to USWC in the BIOS), as long as the graphics card supports
write combining
Write combining (WC) is a computer bus technique for allowing data to be combined and temporarily stored in a buffer the write combine buffer (WCB) to be released together later in burst mode instead of writing (immediately) as single bits or sma ...
(which most modern cards do), allowing data to be temporarily stored in
write combine buffers (WCB) and released in
burst mode rather than single bits.
See also
*
Bus (computing)
In computer architecture, a bus (historically also called a data highway or databus) is a communication system that transfers Data (computing), data between components inside a computer or between computers. It encompasses both Computer hardw ...
References
Computer buses
Computer memory
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