2x 560Ti's in SLI are actually faster than a single stock-clocked GTX 580 in most cases and I heard there is
actually a new 560Ti coming out at the end of this month that's going to be on par with the GTX 570 (same
amount of CUDA cores or something). nVidia did the same thing with the 460's last year to match the 470's.
Technically speaking... my SLI tests did work but, I didn't test it thoroughly. What I found super annoying
with SLI while trying to multibox is that the mouse cursors flicker like crazy when repeater was enabled.
This statement is definitely on a per use basis. Speaking from a non-multiboxing single game client point-
of-view, as an example I was able to crank up TERA Online's multisampling to 32x and actually play the
game smoothly with my 3GB GTX 580's in SLI. Doing so required about (from what I remember) about 2GB
of video RAM and something like 70% GPU usage (sorry for the estimates this was months ago when I was
making my last TERA video). I wasn't able to achieve smooth results like that w/o the cards in SLI.
There are also those people that like to play games using nVidia Surround or ATI's Eyefinity which easily
increases the RAM usage above 1.5GB if the eye candy is applied. Even 2560x1600 resolutions on a single
30" can exceed 1.5GB of video RAM.
I can't wait for 28nm Kepler either but, I think I might just invest in a 3rd 3GB GTX 580 to help hold me over
for an extra year or so until the 7xx series. When the 6xx series comes out I can hopefully pick up a third
5xx card for cheap.
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