Interesting, the cards are close in performance with the 4870 pulling ahead in situations where I'd expect the larger amount of video memory to matter. I'm surprised that the 260 could actually "beat" the 4870 at times, if you asked me which card would be "faster" w/o any benches, I would have said the 4870

Even so, I found the following to be true when I had mine, and it's what made me sell it:
If there's anything we are disappointed with regarding the Radeon HD 4800 series cards, it's power utilization and cooling/noise. The idle power consumption of the cards could certainly be better (though power under load isn't bad), and the cooling solutions simply aren't as good as they could be?the chips run hot, and while they're still well within their thermal design limits, ATI could do much better.
Anyway, good review, I find that ET usually has the straight story when it comes to computer HW and SW.