I'm interested in an ASUS NVIDIA GeForce GTX 570 for my 3.1 MP. It needs one 6 pin and one 8 pin power connection. I was thinking about using the Molex connection for the 2nd optical drive and found these converter cables: 4 pin Molex to 6 pin PCI: http://www.amazon.com/4-Pin-Molex-Female-Adapter-Length/dp/B007NMSUUA 6 pin PCI to 8 pin PCI: http://www.amazon.com/StarTech-Express-Power-Adapter-PCIEX68ADAP/dp/B001TK3TJY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1366483159&sr=1-1&keywords=6+pin+to+8+pin I wasn't able to find a 4 pin Molex to 8 pin PCI. Has anyone tried this before? How did it work for you? Thanks.