Uncacheable speculative write combining

Uncacheable speculative write combining (USWC), is a computer BIOS setting for memory communication between CPU and graphics card.[1][2][3] It allows for faster communication than the "un-cachable" setting (the alternative to USWC in the BIOS), as long as the graphics card supports write combining, which most or all modern graphics cards do.

Write combining (WC) allows data to be temporarily stored in write combine buffers (WCB) and released in burst mode instead of writing single bits.

See also

References
  1. "Write Combining Memory Implementation Guidelines" (PDF). Intel.
  2. "Using the new Intel Streaming SIMD Extensions (SSE4) for audio, video and image apps". Intel, Embedded Systems Conference.
  3. "What is USWC (Uncachable, Speculative Write-Combining)?". computerhope.com.
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