I have a server with a Ryzen 3 3200G with a B450 mainboard. The system has 16GB RAM, a boot SSD and a 16TB HDD. With proxmox and a few VM’s installed with low CPU usage I’ve read 25-30W from a power meter.

Keep in mind that the system relies on the integrated GPU. If it had an dedicated GPU the power consumption would probably increase around 10-30W.