5830 - 282 MH/s
I've got two machines running 4 5830s and have settled on 950MHz core, 300MHz Memory. With -w256 I get 288 Mhash/sec. I've seen over 300 Mhash/sec with 985,300 but not enough stability. Has anyone tried running lower voltage to this card? I saw an entry in the hardware comparison that someone's doing 1.125v instead of 1.163 which seems like a nice way to keep power usage down and maybe overclock a little further. But then... I may have reached the reasonable limit for what these cards can do with any degree of reliability.
Thank you for reminding me to update that
I bumped it up to 950 MHz and now I'm getting 290 MH/s with the monitor plugged in, 293 MH/s with it unplugged.