Can you get it higher with the kernel improvements?
Looks like we need SDK 2.4 for this, but I will stay with 2.1 at the moment
You and I are clearly of one mind.
As you probably know from the latest patch thread
http://forum.bitcoin.org/index.php?topic=25860.40I've already tested SDK 2.4 a little and found that at high core clock speeds SDK 2.1 is still slightly superior for the Sapphire HD5850 Xtreme.
If you are done with trying then let me know and I'll fill gellimac in on the details of my configuration.