Maybe this a stupid question, I don't know.. I tried searching quite a bit but didn't find anything regarding special settings. I just began mining again after a long break and I made the switch from guiminer to cgminer. My computer has 2x 5850's. With guiminer and the tags -v -w256, I get about 340mh/s per card with 875/300. With cgminer, I get 305-310mh/s. I'm running Catalyst 12.1 drivers. I've played with the intensity and checked the clock speed with Afterburner, and the cards are running at about 60*C each. Is there something I should be doing differently?
you need to remove 12.1 and install 11.9
its kind of a pain to do it in windows
you have to uninstall ALL AMD softwae
then physically delete the directories
then reboot into safe mode
use something like driver sweeper to remove the AMD/ATI drivers and all traces from the registry
than reboot into normal windows and reinstall 11.9
that will get your speed back
I have also tried using the vectors and work size work around for 5xxxx cards but you dont get all your speed back, and sometimes you have to keep your memory clocks high which makes the cards run hotter and use more electricity. IMO your better off just using 11.9 with the 2.5.xx sdk that comes with it
hope I was able to help