I can say it did drastically increase the hash rate of my 7950, along with the 14.6 RC2 driver.

The 7950 went from ~ 2.2mhs to 2.8mhs (x11). It brought my 5870's (all by itself - same driver) from ~1.3mhs to 1.75mhs (x11), with the same 13.12 driver as my prior miners (lasybears x11mod).

Also note I run the 7950 at a low 850/1100, like the 5870's 850/1200.


I also might add:

In one system I am running a 7950 on 14.6 RC2 driver (in the miner folder) with a 5870 on 13.12 driver (the system driver), same miner for both.

On another system I run (2) 5870's on 13.12 driver and the same miner as above.