I have a 650w Antec Earthwatts Green PSU supply and I'm looking to power an HD5870 and my spare HD6850 at once.
It isnt for crossfire but rather for bitcoin mining since I had the spare lying around.
Also if the power requirements hold, I will be using a dual 4 pin molex adapter to pci since the psu only comes with 2 6 pins which is used by the 5870.
Does this plan seem sound? Any feedback is appreciated, thanks.