Asus have worked well outside the reference Nvidia specifications, by including two GTX580 cores on a single PCB, therefore cooling proficiency is critical.
To test the card, we measured temperatures while playing the Direct X 11 based Lost Planet 2 over a 30 minute time period, recording the maximum result.
We also use Furmark to stress the card beyond any current day gaming demands. This is not indicative of a real world situation, but we still feel it is interesting to include. Room temperature is maintained at 24c.
When gaming, the card peaks around 85c which is actually a really good result considering the dual GPU design. Furmark pushes the GPU cores much harder, right up to 98c. It is worth reiterating that no game on the market pushes the card close to this, but we always like to include FurMark results as a topic of interest.