I just got a new AMD64 3200+ 90nm chip, and whenever I overclock to a certain point, I start to see flickering in 3D games. Is this due to heat, or do I need to increase my vcore? My temps don't seem to go above about 50C. My vid card is clocked to 400/1000 with NV5 and my temps are not hot at all. I don't think its my FSB, because 9x250 gives me no problems, but 10x250 or 9x260 I get the flickering. Any help?