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Forum Discussion
gpwolfe
Nov 30, 2010Aspirant
Boo-Yah! 8GB (2x4GB) works in pro.
Greetings, I just wanted to say that the pro (rndp6000) works w/4GB DIMMs. Specifically, at least, these: DDR2 8GB (2x4GB) PC6400 800MHz PATRIOT PSD28G800K Frontview shows: Firmware: RAID...
TeknoJnky
Dec 02, 2010Hero
re: the lost 128meg
the reason it does not go missing @ 2gig, is because the shadowing takes place at the upper end of the memory range.
if you recall, 32bit windows allocates the first 2 gig for applications and the 2nd 2gig for system, including video ram, bios, etc.
64 bit relocates the address far into the 64bit memory map, but the video/bios still takes a small chunk of the upper 4g before its logically remapped into 64 bit.
the reason it does not go missing @ 2gig, is because the shadowing takes place at the upper end of the memory range.
if you recall, 32bit windows allocates the first 2 gig for applications and the 2nd 2gig for system, including video ram, bios, etc.
64 bit relocates the address far into the 64bit memory map, but the video/bios still takes a small chunk of the upper 4g before its logically remapped into 64 bit.
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