I've just been searching gfx cards. The HIS 7870 IceQ (without the X) is the same price, the same card but cools a few degrees more efficiant. If your going for overclocking. If not, doesn't really matter.
Also, whats your budget? just so suggesting swapping products keeps you near what you had in mind. Although does after quick search on products does seem to be a pretty decent build
Looks pretty good, but you could save some money on the power supply, unless you plan on getting another video card somewhere down the road for crossfire. You don't really need 750 watts. I would suggest going with a 550 or 650 watt. I would also suggest getting a Caviar Black rather than a green. The greens are pretty slow, and they don't really save you any power.
It depends on how you look at it. If you're going to be keeping it for future builds, then yes, but if you're not going to be getting a second video card and you're not going to be using it for future builds, then you really don't need the extra power.
Nope... in the case fits a graka up to 29 cm but the 7870 has a length 29,7 cm seems like I have to get the HIS 7870 IceQ X or cutout a small area in the case :D
Parts will be taking less and less power as they get more eficient, so getting a very powerful power supply now may be a bit much for "future proof" builds