i7-920 @ stock speed on turbo with HT on,
750w Corsair PSU
6gb ocz 7-7-7-20 ram
Windows 7 x64
I was testing SC2 beta with everything maxed and I was lagging while dragging screen over cliffs? How is that possible @_@ I read on some forums people with a 5770 saying it's smooth with everything maxed, I'm puzzled! any outputs? @_@
I would recommend uninstalling your GPU drivers, and running driversweeper in safemode then reinstalling the latest drivers.
If you don't see the lag issue go away, I would recommend running 3dmark06 or 3dmarkvantage and comparing your GPU scores to other known HD 5770 scores. Make sure to use the lowest preset on the 3dmark software, as that is the one most people use.