hey guys im wondering if this psu will be good enough for a gigabyte G1 gtx 970 the psu is a Seasonic S12II Bronze Power Supply - 620W! im going to overclock my gpu and im running an i5 3470 3.60GHZ with 8GB of ddr3 ram and about 5 fans with a cpu cooler thanx in advance> o and on a side not will my cpu bottleneck my 970 or will it be good enough for the next few years thanx guys.