I just bought a Palit GTS 250 and last night I was messin around with Precision and here are my Clocks.... 770 Core, 1663 Shader, 1032 Memory. (Standard is 700, 1500, 900). I did a few test runs last night with rthdribl_1_2 and everything worked fine at 16x Multisample and 1920x1080. Afterwards I looked at Precision and noticed my fan was only peaked at 70% at 60 Celsius so today I kept all the same clocks and boosted my case fans up to 1000 RPM and GPU fan to 100% and ran it again to see how cool I could run it and about 1 minute in the card quit, displaying green only. So, can a fan cause the GPU to fail? If not what could have? Because thats a very minor OC, I think some companies come stock at 750 with this card.