Apologies if people already know this, but ive only just discovered it and doing it this way has fixed a few of my problems with screen flicker, flash problems, and the GPU not clocking down when idle.
Two ways of overclocking with AMD 7970 cards. The official way using CCC and overdrive and the un-official way using MSI afterburner which involves editing a CFG and cutting and pasting the two dll files into the msi afterburner folder.
The problem is the un-official way throws up some problems in terms of screen flicker, especially when switching between profiles. As well as other problems. It also affects powerplay, meaning cards don't always clock down as they should.
As i recently discovered the best way to overclock is with the official method. Doing it this way you will find less problems with power play and ULPS as well as the other problems i mentioned.
The problem with the official way was the limits imposed by CCC. To get around that do the following.
1. Install the Latest Drivers.
2. Install latest MSI Afterburner. After installing afterburner you must install these clock control files. http://www.sendspace.com/file/r7jys0 & then...
3. Run atferburner once, it will promt you to restart. Restart.
4. Create a Shortcut for MSI Afterburner, place it on the desktop.
5. Right click the shortcut, click properties and in the target box add /xcl.
6. It should look like this
C:\Program Files (x86)\MSI Afterburner\MSIAfterburner.exe" /xcl
7. Open the shortcut. It will says the CCC limits have been increased.
8. Exit afterburner and delete the shortcut. Restart.
9. Load up afterburner. Settings>tick unlock voltage control + monitoring.
10. Now you can overclock using AMD's optimal method. There are no CCC limits and you can adjust the voltage. This is SO much more stable than overclocking the Un-official way using msi afterburner.
I also found this removed the flicker problem and flash problems that AMD users have been complaining about recently.
EDIT
You shouldn't unlock overdrive in CCC using this method otherwise it might interfere with afterburner.
You can set everything with afterburner once you've done this. Clocks, volts, power level and fan control.
http://forums.overclockers.co.uk/showthread.php?p=22535819#post22535819
Last edited: