Quote Originally Posted by zerazax View Post

Not to mention that they changed its scheduler and how shaders are ordered, so driver/programming changes will affect how the card works.
Actually the scheduler change was mandatory to co-op with the increased amount of SPs. Basically scheduler arranges and assigns the tasks for SPs, hence when there are more SPs it is crucial to have more advanced and complex scheduler to keep the SPs occupied.

So, the RV870 scheduler shouldn't be that much of an improvement over RV770, around the same effectiviness.