This thread is almost the same title of an article I just wrote!
Instead of the 285, I pitted the 250, 260, and 470 up against one another (I wanted to have an entry,mid, and high-end test).
I tested all three cards (EVGA versions) in a Core i7 rig w/ HAF-922 case. As virrze said, the 470 runs hotter, but it also does a lot of 2D throttling.
Even if you combine all the benchmark scores for the 250+260, the 470 is still higher. But if you want to spend about half the money and still feel good about your purchase, I'll say the ttp://www.amazon.com/gp/product/B001NXDQCW?ie=UTF8&tag=solistat-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B001NXDQCW was my favorite. I found it ran very cool and has the most overclocking potential.
I extensively benchmarked each card separately and also combined all the results in my head-to-head article at Link removed.
Here's a Solid Tip: If you go from a 200 series to a 400, don't try to swap cards and reboot. The 400 series has their own set of drivers. I muddled for an hour trying to find out why Windows kept saying "Standard VGA Graphics Adapter"!
P.S. DONT FORGET- the 470 is DirectX 11 !