Hey guys, so I've been trying to overclock my XFX GTX 260 to get better performance in games, but it seems that no matter mow much or how little I overclock, my FPS gets cut in half. Games like Oblivion and Fallout 3 normally run at 60-70fps, but after an overclock, they run at 30-35fps. Even if I go back to default clocks, my games still run at this speed. I have to reboot to gain my performance back. This makes me think that it is a driver issue, but I am running the latest driver for my card. I use RivaTuner to overclock, but at first I was using MSI Afterburner. I stopped using AB because there was no slider to adjust shader clock speeds, but I still use it for the on-screen display server. If anyone can help me overclock successfully, that would be much appreciated.
Over clocking that card might net you 61-71 fps if you are already getting 60-70fps. Your best bet is to save up for a better card.
That doesn't seem right. At the lowest clock speeds (300 core, 500ish mem), I get about 30 fps in the benchmark built into Afterburner, but at stock speeds (570 core, 999mem) I get around 60fps. If my math is correct, I should see at least a 15-20 percent increase in performance if I overclock to around 670 core, and 1200 mem.
The best you could hope for is about a 10% overclock on graphics cards from what I have been seeing around, which means you might be able to get that up to 627 mhz. But this is not the only thing that affects FPS, there are other things, ram, heat, voltage, etc. 10% increase on the GPU core will not increase performance 10%, more like 1%.