Forget it in Shat.

I can run 5 instances at close to max settings in lagfree environments (instances) with the following set up.

core2quad 2.4Ghz
4Gb ddr3
EN8800 ultra 768Mb

But it will foil bigtime in crowdy areas/shatt.

I don't really think shatt is a graphic card problem, but a memory problem. Correct me if I am wrong. I think my graphic card is able to handle the load of 5x wow at max setting. Maybe..