Which gpu would have better performance on amd 5800k?

Im wanting to buy a dedicated gpu for my amd 5800k and I dont know whether to go with a radeon hd 7770 or 7870. If i went with a 7870, would my cpu bottleneck or would my psu even handle a 7870?

My Specs:

CPU - AMD A10 5800k (APU)
Motherboard - MSI FM2-A75MA-E35
Memory - 8GB Corsair Vengeance DDR3 (2x4) 1600Mhz
Psu - Corsair 430w
Hard drive - 500GB Western Digital Caviar Blue
Case - NZXT Source 210
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  1. Best answer
    7870, corsair is a good brand psu. the 5800k shouldn't bottleneck a 7870 much, you might lose a few fps compared to an i3 or fx chip but nothing major.
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