Well, yes, you've overclocked too far. Also, I like this card, being it's the fastest PCI-standard card you can get. (Besides the FX 5600 256mb, which I can't find anywhere) Also, yes, CoolBits is the registry-hack method I used too. Finally, if your computer freezes for 30 seconds, beeps, etc...that is the card overheating. Try opening the case or getting a graphics card heat sink.