Though there's no way of telling why it died, I had a sound card blow out. The microphone chip melted and it blew a cap. I was lucky it didn't screw up my video card sitting under it (big black scorch make on it, directly behind the main processor chip! WHEW!!). The sound card still works, and it's a cheap POS, so at most I lost 10 bucks. But, all the peripherials should suffer long term damage by OC'ing, or so I would think. But, considering the expected life-time upgrade wise, versus the amount you would lose should your video card go out times the chance of that happening, versus the cost savings with buying a slower CPU... It's best to over-clock ;-)