EDIT: I updated the question to be more clear.
I am currently running Nvidia's proprietary driver (kmod-nvidia-3.6.7-4.fc17.x86_64-304.64-1.fc17.x86_64) on Fedora 17 x86_64. Apparently, there is a huge performance improvement with Nvidia's new "R310" driver, so I'd like to try it out myself.
My question is: Is there some way to install this driver without totally destroying my current setup? A kmod or akmod would probably be ideal (a kernel update causes boot problems without an akmod), but it doesn't seem to be available in RPMFusion; I can only find it at Nvidia's website, which is apparently a bad way to do things.
Also, Ubuntu has a PPA with this driver and Arch seems to have updated to it automatically.