Athlon X2 2800
I recently had my GeForce 9600GT fail on me so reverted back to an old ATi Radeon 1950XT. Once I installed it it was fine until I tried to play a game on it. I can run movies and other software no problem but games... Half Life 2 for example will load but once I start the game I hear the fan spin up and within a few seconds the pc will freeze or just shutdown without warning.
Using the ATiTool, once I select 'show 3d image' to test the framerate, it will run for (again) 2-3 seconds then freeze or shutdown.
I have checked the temperatures because I was worried that it could be an issue as I live in Thailand and it can get quite hot in my room, generally over 34 degrees everyday. But although they are high (idle around 88-92 degrees Celsius), it doesnt seem to directly affect the gpu or cause it to die. What I mean is that although the temperature rises when underload, it will crash before it gets above 97 degrees, which although high, is probably not enough to damage the gpu (is it?)
I have now thought that it could be a psu issue. I have a 500W PSU but these symptoms suggest to me that when underload, the gpu is using more power than the psu can give, therefor the system failure. The psu is a random brand name and since I bought it here I doubt it would be up to standards of Antec or other decent brands...
Does anyone have any suggestions on this?