Quote Originally Posted by phsinc1 View Post
isn't the HD5850 share the same memory as the HD5870?

setting memory @ 1150 or 1200 give me same vantage score
Same speed memory on the 5850 and 5870. The difference between 1150 and 1200 is not enough to really notice which is probably why you didn't see an increase, especially if you benched at the default Performance setting. You should see a small increase at the Extreme setting.

The 4800 and 5800 series benefits far more from core overclocking than memory overclocking.