8800GTS vs GTX another useless tread

There doesnt seem to be much difference between the GTX and ultra, except for price of course.
So im wondering whats the difference between the GTS and GTX.

thanks nvidia for making this so dam confusing, you got a GTX and ultra on this end, you got a GS/GT on that end, and the GTS in the middle.

I think your talking about the old G80 GTX
basically are there any differences in SPs TMU ROP etc

When I look at overall GPU power, I look at high res and eye candy. So I put the 8800U above a 9800GTX and 8800GTX above an 8800GTX 512MB. But this is because of high res with fsaa performance. At a lower res, then these cards bunch up pretty close and the G92 GTS is not far from an 8800U. In Crysis for example, at playable res there may be only 2-3 fps difference form GTS G92 to 8800U, with the dual GPU GX2 being way ahead though. Crank it to 16x10 high details with fsaa, the 8800U may pull ahead of the G92's more % wise, but it will be unplayable settings averaging 20fps or less.