I have a SeaSonic SS-400w modular supply, with a single 8-pin PCI-to-SATA cable powering a single SSD. I want to add in an EVGA GTX 1060 ACX 2.0 (120w) with a 6-pin PCI power connector, but don't have any extra 8-pin-to-6-pin cables. Can I use the existing SATA cable with a SATA-to-PCI...