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first of all, there is not a single existing video card on the general market that will bottleneck a 8350, lol. maybe in like 4 or 5 years but definitely not now
and for minecraft, my integrated Intel HD is able to run that, lol. with a gpu of such high price youll be able to run minecraft max settings with the Shaders mod at a few hundred fps
anyways, 400 will get you some nice cards. i would recommend either an NVIDIA GTX770, which is priced at around $400, or an AMD 7970, which is around $310-$400