Yeah I got off the phone w/ XFX, no voltage regulator on that 5850 but oh well. Dude said that Overdrive or MSI afterburner can still OC it abit.
Plus the guy said when you start boosting voltage it usaully only for benchmarking for a short period or if you have a water block on it to game with it 24/7 with voltages tweaked to keep it cool. Don't know how true that is but the guy sounded very knowledgeable about this stuff.
Still im curious if anyone else OC'ed this card and how far they got with it with Overdrive or Afterburner w/o voltage tweaks. So feel free to chime in.