Hello everyone, I am new to the forum and new to gaming pc's in general, and pretty un-knowledgeable when it comes to computer builds. I just got everything for my new computer build and bought a Sapphire Radeon HD 7870. I have an EVGA 430w 80+ power supply and it only has one plug in for the power graphics card, a 6+2 pin. Do I need the 2 plug or can I use just the one? And if not, is there some adapter I can buy to fix this problem? I'd like to avoid buying another power supply if possible. Thanks.