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Intel P6 / AMD K7 MTRRs management IOCtl PDD.
P6K7MTRR.SYS is a simple interface physical device driver (PDD) that can manage Memory Type Range Registers (MTRRs) of Intel P6 / AMD K7 series processors. Programmer can query / modify any MTRR settings via DosDevIOCtl() API, from non-Ring0 privileges.
A sample executable, VFBWC.exe, using P6K7MTRR.sys, sets MTRR write-combining strategy to video frame buffer aperture. It can often improve graphic performance, especially DIVE.
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