I’ve been pondering a similar question whilst waiting for the X570D4I, so had been looking into embedded Epyc [Snowy Owl] options:
Not sure about availability in Europe, but these have onboard video, IPMI, dual 10 Gbe [or quad 1GbE], and support ECC via 4, standard size, DIMM slots.
They are also low power too… in the 30-50W range depending on CPU.
4 core w/ Dual 10 GbE:
# ASRock Rack EPYC3101D4I-2T EPYC 31010 4-Core Mini-ITX
$600 USD at Prowess Computing
8 core w Quad 1 GbE:
# Supermicro M11SDV-8CT-LN4F EPYC 3201 8-Core Mini-ITX
$580 USD at Prowess Computing
8 core w/ Dual 10 GbE:
# AsRock Rack EPYC3251D4I-2T Mini-ITX Server Motherboard AMD EPYC 3251 SoC 8 Cores Dual 10 GLAN
$880 USD @ NewEgg.
If you were going with at least and 8 core Ryzen, 10 Gbe and ECC RAM, it may not be much more expensive to go with this board…
Features:
- Mini-ITX 6.7" x 6.7"
- Support AMD EPYC 3251 Processor, SoC
- Support 4 x DIMM slots, DDR4 ECC / UDIMM, RDIMM up to 2667 MT/s; 2DPC
- Support 1 x PCIe 3.0 x 16
- Support up to 1 x OCulinks (PCIe 3.0 x4 or 4 x SATA III 6Gb/s) + 2 x SATA III 6.0Gb/s
- Support 1 x M.2 (PCIe3.0 x4 and SATA3 shared with SATA_4 port) up to 22110 form factor
- Support 2 x 10GLAN RJ45 by Intel X550-AT2 + 1 x Dedicated LAN IPMI
- Supports 12V DC or ATX Power Source