SAPPHIRE Vapor-X 7970 GHz Edition 3GB psu install

Shotty95

Honorable
Jul 9, 2013
34
0
10,530
Hello, i recently bought a SAPPHIRE Vapor-X 7970 GHz Edition 3GB card and im having trouble plugging it in my psu. it has two 8-pin outlets and my psu is a Thermaltake 650w. i have a pci-e cable for two 6-pins but i was thinking about getting two 6-pin to 8-pin adapters but im not sure if its necessary. Whats the best way to plug in this graphics card?
 

Shotty95

Honorable
Jul 9, 2013
34
0
10,530

thats what i thought. i also heard theres power issues with the adapters. is it worth taking the risk?