That probably has more to do with the hardware upgrade rather than the OS
That probably has more to do with the hardware upgrade rather than the OS
I also tried Ubuntu on the same system but (among other niggling problems) i couldn't get the ATI graphics drivers to work.
What that practically means is that any linux distro with a kernel at least that new should support your card without needing to download anything from AMD's website. (Generally speaking, downloading drivers from the manufacturer's website is a windows-ism. There are some exceptions, like Nvidia, but a machine well configured for linux use should aim to use hardware supported by FOSS drivers (such as your AMD card.))
It got a hardware upgrade.
But i couldn't do the hardware upgrade without re-purchasing another Windows license since her install was an OEM install and they don't provide install disks.
Secondly - Windows slows down over time. Horribly. Linux does not.
Third - You don't really have to run an AV in Linux, thus chewing up resources.