Hallo all..looking for a fix...if possible....if no fix, then at least an explanation..the hows and whys...
I have Vista 32 Ultimate with SP1.
Here are the rest of my system specs:
XFX 780i motherboard--shipped with P02 bios, already updated to P04, which was just released
Intel Quad Core Q6600 2.4ghz
4GB G.SKILL 240-Pin DDR2 SDRAM 800 PC2 6400
2 XFX GeForce 8800 GT 512MB PCIe 2.0--SLI'd
Creative Soundblaster X-Fi Xtreme Gamer PCI
WD Raptor 74GB
D-Link DWL-AG530 32-bit PCI Wireless Adapter
2 Pioneer 20X DVD±R DVD Burner Black IDE Model DVR-115DBK
Yes the bios recognizes all 4GB AND the "My Computer" UI "displays" 4GB.
I know, though, about the 3GB limit of a 32bit system(I hear people say that Vista 32 utilizes (NOT recognize, but UTILIZE) 4GB of RAM, but I have yet to see any evidence that supports that, so I will stick to the idea that 3GB is the limit)
I know that the 3GB=System RAM+Video RAM.
I install 1 Nvdia 8800GT 512mb video card.
System RAM reads 2.5GB. 3GB of System RAM-the 512 of the video card=2.5GB. goody gumdrops.
I insall the 2nd Nvidia 8800GT 512 video card and enable SLI.
System RAM reads 1.5GB?
Shouldn't it read 2.0GB?? 3GB of System RAM-512 for card 1-512 for card 2=2.0...not 1.5...???
Where did the missing 500mb go?
AND IF Vista 32 is supposed to be able to utilize 4GB, then shouldn't my RAM read 3.5 before SLI and 3.0 after SLI???
I have built and rebuilt, installed and reinstalled and I still come up with the same thing no matter what I try.
I would love a fix...if not, an explanation as to the hows and whys of what is going on...I would at least just like to understand.