So I just bought a Radeon 6850 which was happily churning out a good ~200 Mh/s. After a day or so of running, it's now running at a top speed of ~70 Mh/s. I've had the fan manually on fully speed and it's definitely not overheated. I've quit all programs as well, and the catalyst center shows 100% activity. Any idea why this happened? Did I blow one of the gpus?
edit: with a second restart, I'm now getting ~200 again, but it fluctuates a whole lot. strange
Sounds like it could actually be an issue with your power supply. Maybe going out on you or not powerful enough.