I want to setup a NAS (mainly for storing games and videos), that I’d also like to use to watch said videos on a WiFi TV and to install games on a separate PC connected via ethernet. This is the part list I came up with (plus whatever GPU I can get for as cheap as possible, I can probably get a GT 730 GTX750 for free). I also don’t need it to be on 24/7, if that’s OK. I can place it in the same room as my main PC and hook it up to the same monitor to turn it on and start it up.

What’s wrong with it?

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 3 3100 3.6 GHz Quad-Core Processor	$50.00
Motherboard	ASRock A520M-ITX/ac Mini ITX AM4 Motherboard	$99.40
Memory	Kingston Server Premier 8 GB (1 x 8 GB) DDR4-2666 CL19 Memory	$36.00
Memory	Kingston Server Premier 8 GB (1 x 8 GB) DDR4-2666 CL19 Memory	$36.00
Storage	Samsung 860 Evo 250 GB 2.5" Solid State Drive	Purchased For $0.00
Storage	Seagate IronWolf NAS 4 TB 3.5" 5400 RPM Internal Hard Drive	$118.00
Storage	Seagate IronWolf NAS 4 TB 3.5" 5400 RPM Internal Hard Drive	$118.00
Video Card	Gigabyte GV-N750OC-1GI GeForce GTX 750 1 GB Video Card	Purchased For $0.00
Case	Fractal Design Node 304 Mini ITX Tower Case	$117.70
Power Supply	be quiet! Pure Power 11 CM 400 W 80+ Gold Certified Semi-modular ATX Power Supply	$58.10
Prices include shipping, taxes, rebates, and discounts
Total	$633.20

PCPP says that R3 3100 isn’t compatible with the RAM I picked (although I can’t find why); it also says MoBo doesn’t support ECC RAM, but on the producer’s website it says it does (https://www.asrock.com/mb/AMD/A520M-ITXac/index.asp#Specification) , so I think PCPP is wrong.

I tried building around LGA 1150/1151 but motherboard prices are way higher (although CPU prices are lower).

I don’t think I can make it much cheaper than this, since I’m buying everything, but if you can point me in a cheaper direction, feel free to do so!

Thanks in advance