the most disappointing thing i've noticed is that 2 overclocked 5870s are going to consume less than a single GTX480, run quieter and perform much better than the GTX480

the huge power consumption is a huge dealbreaker; power draw is 2 times higher than on the 5870 for 10-20% more performance

even the 5970 is much more power efficient than the gtx480


it's even worse with the gtx470; slower than the 5870 and still in almost the same power envelope as the 480