i just picked up a gigabyte 3gb 7950 for $50 locally. realizing now that you cant get 20Mh/s out of them anymore. i can get 12.3Mh/s stock out of it. pushing the memclock up(1250->1400->1500(failure)) doesnt do anything. pushing the coreclock up(1000->1200(max)) does get me to 14.35Mh/s though. i think thats about all i can squeeze out of her. thats probably not even worth it for the card, power consumption wise. not sure what it will do for XMR, but probably not worth it.

im also having these issues with it:

https://bitcointalk.org/index.php?topic=1433925.msg19480415#msg19480415