So I recently ordered a GTX 770 online and I found out that it needs 1-6 pin PCI-E and 1-8 pin but I think my PSU only has 1-6 pin it's a 650w PSU whitch I think is enough for a one GTX 770 I don't know if the graphics card will work with my PSU because it don't have a 8 pin my PSU is a Ace BR Black 650w power supply link to it here "http://www.cclonline.com/product/81279/A-650BR/Power-Supplies/Ace-650W-BR-Black-PSU/PSU0350/" any help will be much appreciated.