I have a CyberPower GU2203 and the R7 240 just isn't enough. I've been looking at GPU's and the 960 is the one for me. On my PC the power supply is 500 watts but I don't know how many pins the PCIE connector has. The specs on Newegg say nothing about it and I'm not home to look at or look up my PSU. The GTX 960 SSC needs a 8 pin connector. Any help would be appreciated.