I was having crash/freeze problems relentlessly for weeks after replacing nearly everything and tweeking and reinstalling drivers what seems like 1M times, I came across a thread on AMD's site about voltage. What is says basically, is the video card pulls so much resources from everything else that the CPU can not handle it, turning off the video card for a few seconds at a time until the voltage is back to where it should be. (am I making sense?..lol) This is why you will read threads about TDR values being to low, ect... Then it hit me, my MB bios has an overclock feature, which cranks up the voltage ..Sooooo, long story short, I went into bios and increased my CPU voltage just a mere 30%. and my entire PC works better, I can stream videos, and play wow, worry and crash free. Even web pages are loading much, much, faster. I would check into your MB manufacturer and see if you have this feature, most bios do now. and with sufficient cooling it's relatively harmless. (though I wouldn't suggest going nutty with the settings
) I do not know if CPU boosting programs will do the trick, but that might also be a quick fix if you are not comfy with bios settings. Hope this helps someone.