You mean this?
NVIDIA's GT200 GPU will be a very hot chip. Rumours are spreading that this single-chip 65nm GPU will have a thermal design power of up to 250W!
At 65nm things will heat up, especially if you put more than a billion transistors together. Such a card will have a thermal design power of 250W, which is even more than the R600, which is the hottest chip of our time and has a TDP of 230W to 240W.
The thermal design power (TDP) number is usually the worst possible scenario and we know that the R600 had a dual slot cooler and Nvidia don't have any choice but to do the same. Water would be the best for such a card, but we are sure that the reference GT200 comes with air-cooling.
1024Bit design, 2GB DDR4 memory, 1200MHz core, 2800MHz shaders, 3400MHz memory.