The Dell drivers suck IMO. They are underclocked and all that junk. If you want to use the official Catalyst drivers from ATI, you can download them from their site and use this tool to mod some of the files so it will work on notebooks. Or you can get the mobility catalyst drivers from ATI as well. New ones were just released a short time ago, and now include support for the x300. You might want to check out omegas drivers as well. Those dont need any editing to get them to work on a notebook.
Very Good Site:
Driverheaven
You should check that site out and read up on some stuff. Lots of good stuff there.
Another good site:
Guru3d
And if you use the official drivers from ATI and they are not the mobility ones, you will need this tool.
Mobility Modder
And before you install new drivers you should completely remove all the ones that you currently have installed. Even if you think you have gotten rid of them, there may still be some files layin around. So you should use this tool:
DriverCleaner
Before you use Drivercleaner, MAKE SURE YOU READ ALL THE README STUFF. There are very good instructions that you NEED to follow. So I hope this helps.
