Stock cooling yes, around 85°C
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I'm getting 16,843 @ 900/1300 in Win 7 x64, looks like even if Vista is scaling better, its actually further down the scale performance wise.
Oh whats your CPU etc?
Believe me, the GPU score in vantage between a quad at 3.4 and 3.7 is not going to be more than a few points, fact.
Here http://service.futuremark.com/resultComparison.action?compareResultId=1446721&compareResultType=19 i7 @ 4.1, scores 400 points more than me in the GPU score, yet I have a lowly Q6600 @ 3.7, Vantage GPU score is as pure GPU bench you can get.
That seems to go against my hwbot result then. I have a much faster overclocked 5850 by over 10% yet my score is still a 1000 short of the guy with a 4.2Ghz i7.
How high are you guys getting before you need to increase voltage?
Greebo, you must have a cherry picked Q9650
Mines running 900/1270 on stock volts, had zero problems