mine are currently showing in CG
2.5
2.7
3.1
they keep fluctuating between 1.9 - 3.4, they move around alot, think this might be CG miners fault though - not sure, im not over clocking, im running stock.
If you're hitting 3 sometimes on stock, I think we're all in for a treat o'clocked. Instructions for overclocking and adjusting voltage looks very simple from the Drillbit forums.
I got some nice fans ready to go and my mining room is in a freezing room off my detached garage. Can't wait to warm it up with these puppies.