my 5850 and amd 940 get 12500 with a very large pending list.
I would assume you'd be able to run 4-6 mb on a 6950 and 6970 thats going to at least double output and since its clocked a whole lot higher it will complete the work faster. I would hazard a guess at around 25k or more including the cpu work.
I've been comparing my GPU on other projects and have found that its not quite as fast as a NV 275. However on Seti and running multiple WU's at a time it seems more like a fermi 460 with its ability to run multiple WU's
the one advantage ATI cards have is we can run AP WU's on our GPU's. I finish a non blanked WU in 90 minutes. That is I can finish 2 AP unblanked in 90 minutes because I can run 2 at a time.
I suspect the NV 5XX series and ATI 6XXX series will be quite comparable on seti.
As stated before, the OPENCl for the ati cards is just getting started.
