7800gtx SLI > 7900gtx
The above example is two refreshes

what's your point here?
WTF are you smoking. You should have said I realize that the single card RARELY WINS (almost never actually). In every example I found the SLI of a previous refresh beats out its younger sibling by a decent margin EXCEPT for the 6800ultra halflife scenario.
I think we all know that SLI is not the best bang for your buck because it will never double your GPU rendering power but will always double your cost. I agree need is relative to the individual... Personally I have a hard time playing games lower than 1600x1200 4xAA...
pretty close? Are you blind?
examples here:
Doom3 @ 1280x1024 4xAA 8xAF trdelta1
Ultras = 160fps
gtx = 120fps
Thats a 25% difference.
Doom3 @ 1280x1024 4xAA 8xAF trdemo2
Ultras = 130fps
gtx = 91fps
Thats a 30% difference.
Far Cry 4xAA 8xAF tr1-volcano
Ultras = 134fps
gtx = 103fps
Thats a 24% difference.
I guess your definition of "close" is different than mine...
It is interesting to note that the gtx smoked the SLI ultras when running HDR on far Cry. THis again supports my theory that as GPUs age and newer games are released with additional features (in this case not a newer game, but new feature) they loose performance to a greater degree than more recent cards. However, it is almost always the case that two of the second most recent cards will outperform one of the most recent.
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