Quote from: Rubberduckie on April 23, 2013, 09:00:26 AM

Quote from: vdek on April 23, 2013, 03:14:45 AM

Quote from: 237 on April 22, 2013, 07:59:54 PM

You should have a clock ratio for GPU/MEM clock of at least 0.7, best
results with 0.57 (0.57 for example GPU 900MHz --> MEM 1,580 MHz).

Also if you are having problems with artifacts, i am sure you are using
the Catalyst 13.x Driver. Try for example 12.6 to get rid of artifacts while
mining. (worked for me at least)

Edit: Try 825 GPU and 1,450 MEM clocks at I 19. That should give you
almost exact 500KH/s

The Catalyst 13.1 drivers have artifacting issues, I upgraded to the Beta 13.3 drivers and all artifacting went away.

I get artifacting using 13.1 and 13.3 on both my 7950's, at first I thought it might be the cards.

Having tried earlier drivers yet

At least for me at high intensity I get artifacting on any card. As long as temps are good you are fine.