if you get a gtx 460 im 90% sure if you get less than 60fps it's not from your video card.. wow isnt very graphicly demanding even with a expantion that adds slightly more intense spells or graphics, same engine but look on youtube for computer specs that run the new wow. i just did that and someone is using a phenom II dual core at 3.4ghz with gtx 460. i asked him what his frame rate is at Screen ress 1920*1080 All details max with aa 4x multisamping 8 x vsync on
well the results in those two basically almost echo what i was saying mate
in the thread linked inside your thread you see they ran benchmarks and had about 60% scaling in crossfire, the sli performance was better clocking in at just shy of 80%
now this is exactly what i said
"now if this has changed i'll be happy as i run 2x gts 450's in sli, but scaling is not nearly 90-95% like in some titles, more like 60-75%"
see, it does in fact "work" in sli just not gonna scale 90-95% like in an engine optimized for it, every time you see benchmarks for crossfire and sli they always use titles that support it, thus they actually get the results you see usually
now at your res you should be able to ultra with dual 460's in sli, was just warning you they aren't going to scale as well in everything as much as you'd think from reading sli benchmarks