Suggestions for NAS solution?

Zero spend and 14w saved, have a look at c-states and consider tweaking the BIOS power settings, fan profile (if not already tuned), disabling any unused controllers etc. and you should be able to improve on that by a few watts if you feel the need :) Realistically £12-13 odd a month isn’t huge for a server.
Unfortunately TrueNAS Scale does not support C-states, but it does down clock the CPU to 1.2GHz when idling.

I have gone through the BIOS as per your suggestion, and disabled on-board LAN and HD Audio, but it has not yielded any noticeable power savings.

Fan wise I had 4 Noctua industrial 140mm intake fans running at 5V, which I have just discovered have unplugged themselves when I changed the power supply.

This is likely to be the source of my power savings not a super efficient PSU lol.

Update
Reconnected the 4 fans and idle usage just went up to 86W so the replacement PSU is apparently more efficient.
 
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I am about to pull the trigger on the following:

AMD Ryzen 5 4600G CPU, AM4, 3.7GHz (4.2 Turbo), 6-Core, 65W, 11MB Cache, 7nm, 4th Gen, Radeon Graphics - £80
Gigabyte A520I AC Motherboard - Supports Series AM4 CPUs, 6 Phases Digital VRM, up to 5300MHz DDR4 (OC), 1xPCIe 3.0 M.2, WIFI, GbE LAN, USB 3.2 Gen1 - £98
Be Quiet BN320 SFX Power 3 300W - £60
10Gtek 10Gb PCI-E NIC Network Card, Single Copper RJ45 Port - £62
M.2 SATA PCI Express to SATA 3.0 6Gbps 6 Ports Adapter Converter, Uplink PCIE3.0 X2 16Gbps - £32
High Speed 6Gbps Sata 3 iii Cable Sas Cable for Server (6 SATA, 0.5M) - £12

Total £344

I already have 2 sticks of 16GB DDR4 DIMMS

Just need a case like the Jonsbo N2.

What do you think? Am I still mad?
 
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