Today i bought one HD7870,i think i found a very good chip for mining,getting 405 MHASH/s.
Default voltage was 1.208 at 1050 core,however the core is great,runs @1.043 at 1100.Downclocking it has no logic because 1000 still requires 1.015 and 1.043 still is a damn good voltage for mining and...