catalyst 11.12 negatively impacts mh/s?

[pandemic]

I just updated to CCC 11.12 and I'm getting about 10-15mh/s less now. Anyone else experiencing that? The only other changes I made was maybe a .NET update and a smaller PSU because my other one died.

[DeathAndTaxes]

Yes.  it is the SDK 2.6  you need to reinstall SDK 2.5 (or earlier) even uninstalling drivers won't fix this.

If you search the forum you can find instructions.

[xepera]

Oh nice - i posted the same problem made the same experience with upgrading to 11.12. So far I haven't tried reinstalling anything. thanks for he tip

[pandemic]

so it's .NET?

[DeathAndTaxes]

so it's .NET?

No it is AMD Open CL SDK.  Each driver includes a specific version of SDK (AMD wraps them all together now).  SDK 2.6 blows.  The only solution is to get rid of it.

[pandemic]

gotchya. So uninstalling and reinstalling CCC 11 would resolve it then I assume? I wonder what they screwed up, lol.

[DeathAndTaxes]

gotchya. So uninstalling and reinstalling CCC 11 would resolve it then I assume? I wonder what they screwed up, lol.

No as I said in the first post if you do that it will keep SDK 2.6 and you will see no improvement.

There are a couple of detailed threads with exactly step by step how to fix it.