I've got a eVGA 7600gt KO which is set to run at 580/1500. Now, I've read about how great an overclocker it is, but using nVidia's Forceware driver's auto overclocking its setting it at 712/1760. This seems absurd right? I've never heard of an overclock anywhere near +132/260. Should I manually decrease it to lower and safer settings or trust the software?