Hello, I am thinking of buying a gtx 760 http://www.newegg.com/Product/Product.aspx?Item=N82E16814121775. It seems that the pci-e cable on my power supply is 6 pin. Would this adapter work for powering the card? http://www.amazon.com/StarTech-Express-Power-Adapter-PCIEX68ADAP/dp/B001TK3TJY