Hello. I have an I3 6098P 3.6 ghz, 8 gb ddr3, gt 1030, AsRock B150M-HDS and a cheap 300W PSU.I want to upgrade to Gtx 1070 and a be quiet! PURE POWER 11 500W CM PC power supply ATX 80PLUS Gold BN297. Is the gpu compatible with my motherboard ? Will the I3 bottleneck it? And, is the power supply really needed? And if the cpu does cause problems, is an used I7 6700k good enough? Thanks a lot.