ThinkPad A485 + AMD Radeon Vega suitable?

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From: Louis Bertrand <louis_at_bertrandtech.ca>
Date: Sun, 17 Apr 2022 11:09:26 UTC

Hello,
I’m looking at getting a refurbished Lenovo ThinkPad A485 to make into a daily use machine and
wean myself from MacOS and Wintel. I’m already familiar with OpenBSD and FreeBSD on servers.

Similar to https://wiki.freebsd.org/Laptops/Thinkpad_A485 with Ryzen 7 Pro-2700U
- Integrated AMD Radeon Vega graphics
- Realtek RTL8111GUL Gigabit Ethernet
- Wireless: either Realtek RTL8822BE or Intel Wireless-AC 9260
- Audio Realtek ALC3287 codec
https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_A485/ThinkPad_A485_Spec.PDF

My concern are with:
- AMD Radeon Vega graphics - binary-only drivers? Redistributable BLOBs?
- Discrete TPM module - smells like special sauce.

If this is not the right place to ask, please let me know if there is a better resource.
Thanks
 —Louis