so i finally built my first gaming pc a few months ago (had been using a mac book pro forever) it uses the A10 7850 APU and after it exceeding my expectations in performance i have finally saved up enough to put a shiney gpu in it. since this in an APU i was thinking about adding a R7 260x and using dual graphics get better performance, but recently i saw some sexyness that caught my eye the R9 270. i was wondering about which one i should buy currently the R7 260x is looking like the best candidate. another issue is that in the future i play on upgrading my display to dat 4k goodness since i have been spoiled by retina (i don't plan on really gaming in 4k just regular use once the price comes down). i was wondering if this amazing community could give me some feed back.
NOTE: i don't typically play game to win more but to have my mind blown by being thrown into a beautiful fantasy experience ie. theif
thanks
-Thor