>>276087216
I did an ITX build for travel purposes using the Kolink Rocket case as it fits in cabin baggage. Main problems are having too big GPU at 2.7 slots thicc and overheating. Had to use 20mm riser screws to move one of the sides further out and undervolt the CPU, SOC and GPU.

Should've gone with ASUS ROG Strix X570-I Gaming for motherboard as it has special focus on cooling over the X370-I version I got. Probably going to downgrade the GPU as the case works as a heat spreader and rising the side makes it less effective.

I feel like Ryzen 3600 is more than enough and would put the saved money towards a GPU upgrade.

>>276087597
Computer stores will do the update the BIOS for about $20. You can ask AMD to send you a CPU for this purpose too if you think it's worth your time.