Hey, I know what it means, but what could be causing this? I recently nabbed two sets of dimms (2x2Gb) for my twin machines, but for some reason my installation only tries to use 3Gb. I haven't tried swapping out my previous dimms to test a mixed config, but wondering what gives considering the GPU's onboard ram is only 256mb (IE: not taking up 1Gb of memory allocation). That said, this is a fully x64 bit machine and I'm running W7 x64 atm.