I'm running an ASRock 960GM-VGS3 FX motherboard with an FX-6350 6 core CPU. The motherboard lacks PCI-E power socket. I am looking to get a GTX-960 GPU which has an 8-pin PCI-E power socket. My PSU is 450 watts which, according to the Nvidia website, is more than enough for the GTX960, but that PCI-E power connector has me halted, and I want to know what I would need in order to make this combination work.