Re: some info/suggestions on 8800GTS (G92)
Im sure you'll be able to hit 725/1000/1800 with ease if you increase the fan speeds to 50%, just dont use 3dmark for your tests. Use a variety of games, since some wont stress the gpu as well as others. 3dmark ran fine for an hour but then crysis would crash, i lowered the clocks a bit and crysis ran fine but then assassins creed would freeze, so i had to lower again and so forth.
2500k/Asus P67-Pro/8gb Corsair Vengeance DDR3/X25-M/p190