ASUS M2N4 Sli motherboard AMD x2 6000+ CPU 4gb RAM (4 x 1gb DDR2 PC6400 800mhz) Geforce 8800GTS 320mb Video card Vista ultimate x64
I previously had only 2gb ram and I had framerate problems with my games, but after nvidia driver updates and vista hotfixes they were playable.
I then upgraded to 4gb faster ram to see if it helps and it has made it worse! The picture seems to have improved slightly, but the framerate has got much worse.
Is this a power issue? I have a hyper 570W. I think maybe because the new ram will take up more power, perhaps even less is being supplied to the video card therefore reducing clock speeds and framerate.
i had a 530 watt hiper on a similar set up, well a lesser set up amd 5200x2 2 gb 8800 vista ultimate 32 bit and it seemed to work, but had a few niggles and i was not happy with performance a new psu solved some issues so it was underpowered, i have since got rid of vista as all the games i play work loads better on xp. so i think you may have a psu issue, but im not sure how well developed the 64 bit drivers are at this time. on that set up you should be looking for at least 26 amps on the 12 volt rail or 12v rails (combined)