Really? I've been overclocking for a few years now. in fact, I am running a 2.8gihz AMD Phenom X3 at 3.850ghz... air cooled. Before this, I had a 2.2ghz dual core overclocked to 2.8ghz. I've always had good luck overclocking anything. 600 to 1ghz is a bit on the high side of that, but if it is stable and not running very hot (mine is running at 40c @1ghz under full load for 3+ hours now), then I don't see much of an issue. And I'm not worried about killing my phone earlier than it is expected to last. My NE2 was up last month on my primary line, and one of my second lines will have a yearly discount in 3 months.