Originally Posted by Redeemed
This. Both the 5850 and 6850 can come within reach of their bigger brothers simply from oc'ing.
Default clocks on all the mid-high range cards seem to be low. The CCC limits you to 775-1100 with a 5850, which is ridiculously low and everyone knows it. Mine will do 850/1200 easy on stock volts and @ 5870 voltage will do 975/1250