I am running linux and having some problems with getting the dedicated card to work well with two monitors. So before I spend time on getting that to work, I would like to know what kind of impact it would have on the performance of the laptop. I don't play any games with high graphics needs. I use mostly Firefox, Chrome browsers, and Eclipse IDE and sometimes play games like Wesnoth and Nexuiz.
So will switching to the dedicated graphics card give any performance improvements? Does a dedicated graphics card use the CPU and RAM? If this is the case, will it reduce the CPU power/RAM available for other programs?