From what I've seen the FSB's are all about the same, its the amount of volts required to acheive them that differs. If you can hit say 450 on auto, then chances are you can hit 500 @ the max of 1.71V. Runawayprisoner has had more than one and refers to some requiring more volts than others @ certain speeds. I too want 450-475FSB with low volts for 24/7 operation and don't care what volts it takes 495+ as long as it will. If you need the full 1.71v just to get 475 stable then 500 won't be likely. Once I find one that can hit 450 on auto and +500 @1.71v then I'm gonna keep it and change the northbridge cooling. They're $154 here in Texas. I've only tried one thus far, the next one will be tried this weekend.
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