XP recognizes only 2 gb

BudJ — Sun, 08 Jun 2008 08:27:01 GMT

I'm new here so please bear with me. I've just built a new SLI computer. I put in 2 OCZ 2 gb sticks. The bios registers 4 gb but windows only see 2. I knew it wouldn't see all four but two seems pretty low. I have two 512 mb graphics cards so that accounts for 1 gb of memory not being accessible, but what would cause the other gb to be lost? Is there anything I can do to recover some of that last one?

Re: SLI- Ready Memory

Marco C — Tue, 31 Jul 2007 03:08:27 GMT

Whoever wrote that "review" doesn't quote understand how SLI-Memory / EPP works. Corsair's (or anyone else's) PC2-8500 memory will always default to 800MHz because that's the fastest officially supported, JEDEC certified speed. All EPP does is take a portion of the SPD to store information about the module's higher rated speeds. What the person who wrote that fails to understand is that the motherboard / chipset is what determines the ultimate memory speed.

It looks like you've got an nForce 680i SLI motherboard, and that mobo supports asycronous memory speeds. So, if you want to run your memory at 1066MHz and overclock your CPU, all you have to do is set the FSB:Memory ratio to unlinked and dial in the speeds you want. You could use EPP / SLI-Memory settings if you wanted, but that will tie you down to whatever speeds are programmed. You're better off setting things manually and tweaking for max performance.

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XP recognizes only 2 gb

Re: SLI- Ready Memory