Chipset Driver not working

I can't install the latest B550 chipset drivers because it literally won't let me. Every time I try to download it, a message pops up, "This installer is intended to be deployed only on an AMD system. Exiting installation as the requirement is not satisfied." I use a Ryzen 7 3700X on a B550...

Im trying to save a bit of money on the CPU so am considering the i3 6100/6300 over the i5 for now, and then probably upgrading to i5 cannonlake later down the road (if it uses lga1151). So is this a good option for gaming? Is it worth spending a little more on the 6300? Or will the 6100 be...