Yes, that's true. That doesn't change my point. Inevitably both processors do the same thing - they "go beyond their stock speed" where power and thermals allow. It's really all just a scam IMO, because the CPUs are perfectly capable of reaching their turbo speeds but it's cheaper for the company to ship crappy heatsinks. Since the stock heatsink can keep up with the "stock speeds", it isn't false advertisement when the CPU has to run slower than its turbo speed. To make matters more scummy, the CPU is advertised by its stock speed, not its turbo speed. So in most benchmarks you'll see a 3.4GHz CPU outperforming another one of similar specs when in reality it is running at 3.7GHz. The average benchmark doesn't last long enough to make thermals an issue, especially in controlled environments. </rant> No, they're not. Intel isn't either. Get too far beyond 3.5GHz and you're approaching dangerous territory. Intel and AMD can't rely on customers being intelligent enough to get an adequate PSU. They are not going to be held responsible for unstable systems because somebody decided to use a 4-pin CPU connector on a 4GHz 8-core. EDIT: To my understanding, with the exception of the FX-9000 series, there are no [desktop] CPUs out there that require an 8-pin CPU connector at stock speeds.