NVIDIA targets 225W TDP With GT300 GPU
 

Unlike AMD/ATI, nVidia spent Computex Taipei 2009 in silence, not mentioning anything about the future of their hardware. That was to be expected, given the fact that nVidia was also silent during Computex Taipei 2008, and then briefing select journalists about Tesla D1060 and S1070 week after the show in Santa Clara, CA. Of course, this was followed by launching GeForce GTX280 and GTX260 the week after.

Thus, nVidia is keeping silent about their DirectX 11 plans, but don't think that the timing of their "nVision Lite" [End of September 2009] is timed just because they want to talk about 15 month GT200 architecture. Our sources are confident that the part is on track, and that it will launch during Q3 2009. Again, according to the same sources, one of primary concerns was how to avoid all the thermal spots that plagued the GT200 architecture.

http://www.brightsideofnews.com/news...-225w-tdp.aspx

225W! If they make their heatsink fins wide enough we could maybe use it as a bread toaster :)

Swap a GF8500GT with GTX 285 and under full load note down the difference... might be surprised, have some numbers for you later this evening;)

and we're back with some numbers;
C2D Overclocked mildly to 3.3ghz
4gb ram
2xSATA HDD

- 8500 GT max power: 196W
- GTX 280 max power: 396W

let's be positive and say 8500 GT consumes 25W under load.
that would be the total for GTX 280: 396-196+25W=225W

:D