Can suggest this board:
While I’ve been running NAS on this mobo for about a month, I didn’t measure power consumption (because I don’t care that much). My UPS shows ~220W for my entire homelab. So, off the top of my head, it probably eats about 150W at idle (with 6xHDDs, 2xSSDs, 2xM10 optanes as boot drives and the-not-that-power-efficient x520-DA2 with 2 connected DACs).
On the bright side:
- It is very cheap. But with 0.40 USD/kWh it can be no matter at all…
- Probably supports up to 1TB RAM (with 2200 line CPUs that are not cheap). Not sure whether 128G modules are supported. But 64G ones are supported for sure (so 512G is there).
- Plenty of PCIe. Perhaps with bifurcation, but I still didn’t test it.
Cons:
- Only 1x 1Gbit nic.
- No IPMI.
- Questionable power consumption.
- Only 6 SATA. But that isn’t a con for you.