How can I speed up Unity with an ATI card?

I've been using Unity for two days... but all the apps and Unity itself runs very slowly I've installed Catalyst 11.4 (Ati Radeon HD 4350, 2GB RAM, Core 2 Duo @1.86 Ghz, 12 Gb Partition, 1 Gb to Swap) and I unchecked the v blank option in OpenGL in CCSM.

There is another way to speed up unity?


Go to CCSM (compiz Configuration Settings Manager) then go to the OpenGL plug in and then uncheck Sync to Vblank.

Then go back and on the Composite plug in uncheck Detect Refresh Rate