1050/1500 and 1080/1500 work best for 7970s. also tc of 8192 and remove -v 1
make sure to delete the old tahiti file in the cgminer folder first when you change thread concurrency.
also see if you can get by with powertune 0. +20 was the hype previously but usually not needed.
Thanks for your reply. I just did as recommended and went with the 1050/1500: net result is gain of 10Kh/s. I am still nowhere near what others report of >700.
Any other ideas? Are there any motherboard BIOS defaults that could be changed to help? Just guessing...