Some of that is my cash. I bought into ryzen recently, breaking from a decade of intel on all my home machines. The chip is working. It is very fast. Maybe I'd get a few more fps from intel, but not at the same price.
You can read more about it in:
* https://www.reddit.com/r/linux/comments/6m2jvn/eli5_of_amd_d...
* https://www.reddit.com/r/linux/comments/754uh6/update_on_dcd...
* https://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-1...
* https://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-D...