UPDATE: My card now steadily cranks out 324.6Mh/s @ 1010mhz core with 360mhz mem, all at stock voltage. Updating the phatk kernel is key to maxing out hash rate, going to the current version bumped me up a solid 10Mh/s, not bad for simply updating phatk.
Yeah, I was able to squeeze 300 Mhash/s @ 970 MHz core with 600 MHz mem from my 5830,
however I'm paying $0.30 per kWh, so basically the card worked just to cover electricity cost...
