Hello I would like to ask whether proccessor AMD A10-7890K Black Edition can tighten GTX 1080 ?
what, do you mean by tighten in this context. I assume that you were asking whether or not the A10.7890K will bottleneck the GTX 1080 in that case, yes it will, but if you are going to purchase that kind of expensive gpu I would suggest you using a fx 8350 or better in order to not bottleneck it or you know you can just wait for zen if you have the patience for it.
An 8350 will also bottleneck it.
Anything short of a 4.5ghz Intel i7 will bottleneck it.
An FX 8350 or greater will be fine with the RX 480, the "lean" back end hurts its performance worse than a slower processor, if the game itself isn't CPU bound.
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