My computer screen has begun flickering while playing some games. I'm not sure, but I think it may be related to the video card. The screen usually starts out fine, but then after playing for a while the image begins to flicker. The main game that I've noticed it with is Call of Duty 4. When the screen flickers with call of duty, it looks like multiple lines starting near the center of the screen running outward, that appear and disappear. It's flickered a couple times with World of Warcraft, but not often. Also, when it flickers with World of Warcraft, it looks a bit different, it's more like blocks that appear and disappear rather than lines, it's much less annoying.
My video card is the Sapphire X1950XT http://www.newegg.com/Product/Product.aspx?Item=N82E16814102067
To try and figure the problem out, I installed ATI Tray Tools to look at the temperatures and etc. It appears that that the card runs at about 57-60 deg while idle. While playing Call of Duty 4, the max gpu temperature went up to 89 deg and the max environment temp reported by the program was 67 deg. I rebooted about 5 min after quitting the game, and the bios reported a cpu temp of 47 and a sys temp of 35. This led me to believe the card may be getting too hot, so I blew all the dust out of my computer, and I cleaned the video card fan. I put it back together and fired Call of Duty 4 back up. After about 10 min the game crashed to the desktop with the following error "VPU Recover has reset your graphics accelerator as it was no longer responding to graphics driver commands", the max gpu temp was 92.38, and the max environment temp was 67. I've gotten this error once in the past, and I've also had a couple BSODs (I don't remember the error message though).
I then installed ATITool to try and play with the fan speed. I tried a few things, but here's one of them. I set it to try and keep the gpu temp at 70. I fired up COD4, the fan speed shot up to 90% pretty quickly, the flickering started after a few minutes, but was less severe. The gpu temp ranged from 56.75 to 82.25. It does get pretty warm at the back of the case where the air blows out of the video card's fan.
So, what do you think? Should I send my card in for a replacement, do I need to add some aftermarket gpu cooling, do I need to configure the gpu fan some other way, could it be related to something else (PSU perhaps), or maybe it's not even the graphics card causing the problem.
Let me know if you need any more info, my system specs, or anything else.
Thanks for your help.