Cool n Quiet is good for lowering temps, and CPU frequencies, but this also means, that the Unreal Engine 1.0 goes nuts. So as long as you dont play UE1 games, your fine
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AMD Athlon 64 X2 5000+ Brisbane 2.8
2GB 667Mhz PC2-5300 DDR2-SDRAM
320G Seagate 'Cuda 7200rpm 16mb
HIS Radeon HD 4670 1GB DDR3
XP Home SP2 (before crash Vista HP)