That graphics card will need two 8-pin (6+2) PCIe cables. Look up in the PSU swing-out contraption to see if you have 2 PCIe cables available. They should be connected to your PSU in ports labeled R1 thru R6 . . . with corresponding tags. There could be one hanging out here [IMAGE]
Hi dell community, I have purchased an rtx 3070 with dimensions of 10.5 inch so fitting is no issue however, I want to know what cable I will need to connect the oem 850w psu to the new rtx 3070 gpu. I think it would be a 6 pin to x2 (8) pin or an adaptor of some sort but I could be wrong. If anyone can provide guidance, that would be super. Kind regards, James 
Aurora R7, upgrade to RTX 3070