Power-draw and temps
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The temperatures are roughly in-line with the Radeon HD 4870 X2 and considerably higher than a single-PCB GTX 295's. Noise, though, is louder than on both, especially when under load.
Power-draw
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Idle power-draw has always been decent on the GeForce GTX series and system-wide draw is less than on Radeon HD 4870 X2.
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The under-load figure is scary - well over 100W higher than GTX 295. Add a second card and it rises to almost 850W. Bear in mind that a couple of different PSUs were used here: Akasa PowerMax 1,200W for the ROG MARS cards and Cooler Master 1,000W for the other two.
Overclocking numbers to come!