Quote from: blissfulyoshi on January 29, 2012, 10:55:28 PM

From what I found while googling, the old 6950 1gbs might be unlockable (luck is still a big factor in getting one that is unlockable, but it is possible).

Aside from that, reading the mining hardware comparison chart, it does not look like 2GB 6950s are any faster than the 1GB ones, so I'll also say just get the 1gb ones. (You could also search for some old 6950s and try unlocking them if you are feeling lucky)

*Some* 6950 1GBs ARE unlockable, read the reviews and Ctrl-F search for unlock: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125385
Stay away form XFX, none of them appear to be unlockable 1GB including some 2GB.