FUD Zilla claims NVIDIA's upcoming GeForce GTX 580 will be about 15 to 20 percent faster than the GeForce GTX 480.
This is something that we'd expected from the tweaked and fixed GF100 chip. The core architecture is slightly changed in order to make this GPU more efficient and to lower the TDPs, at least slightly.
The general idea was to stay at a similar TDP and get much more performance, per watt of course. Since this is one of the biggest chips ever built, or should we say re-spun from the GF100, you have to know by now that it will get hot and fast, but so do any of the products in this market range.