I've just bought Gigabyte's HD7950 V2 for a good price to treat my cMP1,1. Didn't know that V2 of this card came with 6 pin and 8 pin adapters, so i had to improvise a jumper for the 8 pin, just to test it and to use it until tomorrow when i'll buy proper one (6 to 8 pin). The funny thing happened when i was flashing BIOS and doing Lexmark bench test. First i did it with stock bios, monitoring PCIe Booster that goes into 8 pin socket. It was between 6 and 7 amps most of the time, with fast jumps from 5 to 7,5 amps. Stock clock was 1000Mhz. Then i flashed it with MacVidCards stock Mac 7950 ROM, that is using 800MHz Clock. Result is lower, but the thing that confused me is that iStats was reporting solid 9+ amps on PCIe booster that goes into 8 pin slot on the card?! Lastly, i combined Gigabyte's BIOS with Mac7950 EFI and got same results and clocks from the first test. but with added boot screens, and model/PCI recognition in About This Mac. Also, power consumption was 7,5 amps at maximum, same with stock PC BIOS. Is anybody familiar with this, why would lower clocked, but same, card draw so much more power? Also, OpenGL Extension Viewer is reporting OpenGL 4.1, isn't this supposed to be 4.2 supported card? Thanks to averyone who have time to read and participate! EDIT: Added ROMs - Gigabyte's, MAC7950 and mine Original+MacEFI that I continued using.