Hello All,

I was wondering which of those two cards is better for mining ?
SAPPHIRE HD6950 PCI-E 2GB GDDR5 (http://www.stantek.com/products/500x500/p43407.jpg)
SAPPHIRE HD6950 PCI-E 1GB GDDR5 (http://www.stantek.com/products/500x500/p45007.jpg)

The 1 GB version is cheaper of course, but i was wondering if it's possible to unlock shaders ?
Also on the 2gb model the fan seems too small to me. It will be very loud on high RPMs, no ?
Please give me some feedback on those 2 cards.
Thank you !