Ryzen no GPU atm.
The APU series coming out later of the year.
Therefore just need a GPU that supports HDCP 2.2?
*Streaming in 4K requires an HDCP 2.2 compliant connection to a 4K capable display, Intel's 7th generation Core CPU, and the latest Windows updates. Check with the manufacturer of your system to verify specifications.
Netflix 4K requirements afaik
H/W
- Intel Kaby Lake Core i3(?)/i5/i7 (for both HEVC decoding and Intel SGX support)
- Intel 200-series chipset motherboard (100-series *might* work *try at your own risk*)
The upcoming ultra hd blu-ray drive for pc recommends 200-series, along with i5 or i7, so i'll probably play safe when it comes to cpu/chipset/mobo choice if i'm to build a pc for netflix 4k today)
- HDMI 2.0a / HDCP 2.2
S/W
- Windows 10
- PlayReady 3.0 DRM
- Microsoft Edge / Netflix app
Havent been keeping track if AMD Radeon or Nvidia Geforce works if you only have the Kaby Lake portion fulfilled since I've determined Netflix 4K aint worth my time