| fallen said: How much power does a 780 draw? That's another problem. I dont think they can make a 600 watt card, |
It doesn't exactly work like that, when running multiple GPU's, you don't get a linear increase in power consumption due to inherent inefficiencies in SLI and Crossfire that prevents all the transisters in a GPU from being utilised.
That's added onto the fact that the chips for these kinds of cards are essentially cherry-picked out of an entire batch, only the lowest leakage-chips are used in order to conserve power, bundle that with better and more energy efficient power delivery... And it's easily feasible.
AMD for instance has always thrown "250-300w" GPU's on a single board, yet power consumption has never doubled over a single GPU card.
I do personally think this rumour is a fake though, 640bit bus seems rather uncanny for nVidia to fall towards, more likely it would be a 2x 384bit and feature 6Gb GDDR5, I just don't see nVidia re-designing the memory controller or going with an asynchronous DRAM set-up for just this.
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