I have a Gigabyte GTX 670 Windforce, and it requires a 6 pin and 8 pin connector. My power supply, the Cooler Master RS-500-PCAR-A3, only has a 6 pin connector. I have gotten a SATA to 8 pin adapter, but is it enough? Should I return it and get a Y cable that is 2x SATA to 8 pin? I may consider 2x molex to 8 pin too.
A link to the adapter I got: https://www.amazon.com/15-Pin-8-Pin-PCI-Express-Female-Adapter/dp/B01ECCVE9W/ref=sr_1_20?s=pc&rps=1&ie=UTF8&qid=1499899236&sr=1-20&keywords=6+pin+to+6%2B2+6%2B2+pin&refinements=p_85%3A2470955011%2Cp_n_feature_eight_browse-bin%3A15562491011
A link to the adapter I got: https://www.amazon.com/15-Pin-8-Pin-PCI-Express-Female-Adapter/dp/B01ECCVE9W/ref=sr_1_20?s=pc&rps=1&ie=UTF8&qid=1499899236&sr=1-20&keywords=6+pin+to+6%2B2+6%2B2+pin&refinements=p_85%3A2470955011%2Cp_n_feature_eight_browse-bin%3A15562491011