Ive done several deals on this forum without issue. Other forums as well. I bought this card several months ago new. Works perfect. It is a Sapphire 5870 2gb Eyefinity 6. Ive always ran it at 940 core no voltage tampering. Im wanting to crossfire a couple 6950 or 6970 2gb cards and thought Id attempt a trade here before just selling this card.
i did when i launch my miner one worker is device 0 and the other is 1. when i disable crossfire no matter what i change the device to it either uses the cpu, or does not run at all.
If disabled you will have to connect the second card to a monitor or use a dummy plug.