Quote Originally Posted by chew* View Post
You got the right idea

Currently although bios calls it core 1-8 even though reality is 0-7.

Anyway if you disable cu 3 cu 4 is auto disabled. What would be a real treat is to be able to disable cu 3 yet be able to use cu 4 instead and so on. I can't gurantee that that will alleviate what I am seeing but never know until you try.
Try C5F 9911 bios.
I asked Asus to add control for individual cores.
It works perfectly and you can do the 'cherry picking' (i.e disable CU2 and leave the rest active).
The only limitations are: You cannot mix compute units working in single & dual core mode or change the boot strap core (so hope your CU0 is good)