just to necropost a followup, the g3258 is happily sitting in the living room where one of the two main roomies enjoys WoWing on it + HD5870 (had to get a new case (Corsair 270R...holy shit, my first case with cable routing!) as my only one that would house the 3rd party Arctic Cooling Xtreme Plus II is still occupied by R9 290+i7-860) and it performs better than the $2000+ Haswell i5+GTX960M Alienware he'd normally play on.
also, youtube and kodi box
have only really tested L4D2, Typing of the Dead, Hitman Absolution, NFS: High Stakes, and a bunch of demoscene demos