I just bought a new Aerocool Templarius 550W PSU to replace my old 450W, it comes with 6+2 Pin PCI-E, they are 6 pins pci but with a small 2 pin extension that you can use, will this work as an 8 pin pci for my GTX 680, i just want to make sure so i don't burn out the cables, which is what happened with my old PSU (it was a crappy cheap chinese one). thanks.