12-28-2009, 04:13 AM
Quote:On my 32-bit XP only a little more than half a gig of video card memory is mapped into the system address space. Why it all isn't I don't know. But half a gig is half a gig. A 64-bit OS would result in more available system memory, but whether that would result in "a noticeable performance boost" is another question.
Yeah, that's what I was getting at. I have 4GB RAM, but the 512MB RAM on my old 9600GT brings it down to 3.5GB of addressable RAM with a 32-bit OS. The new 7890 has 1GB of RAM, so it would potentially bring it down to 3GB. That slashes my RAM by 25%.
I don't think my RAM usage has ever climbed anywhere near 3GB, so I doubt I'll notice it.
I guess I'll update when the new card comes in.