JacobsParts PCI Express Mini 6-pin to 8-pin PCI-e Video Card Power Cable for Apple Mac Pro Tower/Power Mac G5
Provide power from the logic board's mini 6-pin connector to a PCI Express Video Card with a standard 8-pin connector.
Compatible with PCI Express based Mac computers including:
Power Mac G5 2.0 GHz Dual-Core
Power Mac G5 2.3 GHz Dual-Core
Power Mac G5 2.5 GHz Quad-Core
All Mac Pro Towers
Compatible with PCI-e Video Cards that have an 8-pin power connector including:
Radeon X1900 GT, X1900 XT, HD 3870, HD 4870, HD 5770, HD 5870, HD 6770, HD 6870
GeForce 7800 GT, 7800 GTX, 8800 GT, 8800 GTS, GTX 285
Quadro FX4500, FX5600, FX4800, 4000/4600, 7800 GT/GTX, 8800GT, GTX 285
Many others