Fudzilla’s sources claim the Geforce GTX 480 will end up at a mammoth TDP of close to 300W. To put this in context, ATI’s dual-GPU HD 5970 uses about that much power – with a TDP of 294W. The slower GTX 470 is rumoured for a 220W TDP. That is a massive 80W difference, and it is unknown how crippled the 470 will end up being if it is indeed 220W.

Both cards are expected to ship with 6-pin + 8-pin PCIe power configuration.

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Fudzilla’s sources claim the Geforce GTX 480 will end up at a mammoth
TDP of close to 300W. To put this in context, ATI’s dual-GPU HD 5970
uses about that much power – with a TDP of 294W. The slower GTX 470 is
rumoured for a 220W TDP. That is a massive 80W difference, and it is
unknown how crippled the 470 will end up being if it is indeed 220W.

Both cards are expected to ship with 6-pin + 8-pin PCIe power
configuration.

If these rumours are to be believed, the GTX 480 will end up at least 75W above the initially expected TDP. This will also make a dual GPU GF100 variant an impossiblity, unless Nvidia breaks the PCI-e regulations, or, goes for a major die shrink or respin.

Nvidia is still keeping vital information close to their chest, but this, combined with gloomy rumours, is only causing FUD against Nvidia.

Reference: Fudzilla