My radeon x800xl just started getting major artifacting when running graphic intensive programs and I'm not sure what the problem could be. Everything was running just fine until yesterday when during a game my graphics started freaking out. Crazy artifacts started dancing all over the screen and after a minute or so the screen went black and the system froze and had to be rebooted. Once I rebooted, XP started up just fine and I could surf the web or do whatever else just fine for however long I wanted to, but just as soon as I started up a game the artifacting started again and if I didnt stop the game, the screen would go black and the system would freeze again. I tried uninstalling my ATI catalyst 6.4's and used their driver cleaner too, and reinstalled the drivers again, but nothing changed. I checked the card heat, the cooler seems to be working fine and the heatsink doesnt feel hot, just warm, same with the back of the card. So I'm at a lose to figure out what the problem is. Everything works fine as long as I dont run a game or anything like that, 3dmark05 results in the same problem, but once I do artifacting and video cuts out every time. Now this is my girlfriend's system, her 9800xt died about 2 weeks ago (system wouldn't post with it in anymore) and I gave her my chaintech vf4 ultra, athlon64 3000+, x800xl, and enermax 430w PSU. This stuff has worked solid for me for over a year. Only thing new to the system is her old 2x512mb Kingston pc2700 valueram, her antec case, her audigy, and her old power strip (one of those that you rest the monitor on and has different switches to turn on/off different equipment). I am curious that this problem would suddenly crop up now that she has it, but I dont know what it could be. Could it be the ram? or powerstrip? or something else? CPU and system temps are low 29c for cpu and 32 for system.