Transfer the 5600xt to a new system or fresh build and repurpose or gift the old PC.
Target specs:
Ryzen 3700 8c/16t
32GB DDR4, 2x16GB is a better config than 4x8GB
500GB or larger NVME OS drive, if the emulator VMs are largeish, bump this to 1TB
reuse 5600xt, upgrade it if your emulator VMs are GPU accelerated and your GPU is now the component getting maxed out.
Pick PSU size based on intended components
https://www.newegg.com/tools/power-s...psu+calculator
Motherboard depends on desired other components, get the x570 chipset.
Case depends on motherboard size selected, other components required, and personal taste/budget.
A decent Ryzen 3700 prebuilt is a worthwhile comparison here. They'll have to have some sort of GPU included because there is not an onboard GPU on the 3700 CPU.