Download the RTX version. USB-C functionality works in it. Regarding the performance difference, it's minimal. For all of the benchmarks I've made in the past on my rig, it was in an area of 1-3%. However - keep in mind that this is just a stock Nvidia driver - not modded. Hence you won't see much of a difference if any. Highly dependant on the setup. The main purpose of this is for the people that are conscious about the privacy in their system, and want to keep it clean from bloat and unnecessary side software that comes with Nvidia drivers these days.