fountainpen :
OK, but the discription said it supports CPU´s of 140 W, but i got my money back and getting another one.
do you know if the ASUS B85M-G works well with a i5 4670k and a HD 7870 XT?
Sure, if you don't overclock it will support them, also, the VRMs on that board are not stout enough for something like the 8350.
The B series motherboards don't support overclocking...if you intend to overclock you need a Z77 and 3570k. The only reason to go to 4670k is if you will never overclock.
Also, I don't see a reason to swap out your 8350. If you got a decent motherboard it would be fine. The Intel boards you'll need are much more expensive than the ones that work for that 8350 anyway.
EDIT: You realize the 4670k is $70 more expensive by itself right? Before you buy the more expensive motherboard you need to pair with it. If you're on a budget, it's much wiser to go AMD.