New DIY NAS build - ECC or no?

Hi,

After almost eight years with my current build (can't believe it's help up that long!), it's time for new hardware. I am very undecided if ECC is worth the price for my use case: media storage, non-essential backups and quite a few Docker containers (Plex, Immich, Paperless etc.). What I'm a bit worried about is this: while I do make regular backups of the NAS, I probably won't notice when errors happen so the backup might be corrupt than as well. Is that assumption correct? And how likely is it actually?

Option 1 non-ECC build:

• Motherboard: ASRock B860M Pro-A

• CPU: i5-14500

• CPU Fan: be quiet! Pure Rock 3

• Memory: Crucial 32GB Kit DDR5-5600 CL46

• Cache SSD: Samsung 990 Pro 1 TB

• Case: Jonsbo N5 (or maybe Fractal 804, though my experience with Fractal isn't the best)

• Case Fan: ARCTIC P12 PWM PST

• PSU: Corsair RM750x (since 550x isn't available anymore)

Option 2 ECC build:

• Motherboard: ASUS Pro WS W680-Ace IPMI

• CPU: i5-14500

• Memory: 2x Kingston 16GB DDR5-4800 CL40

• rest is the same as above, case is undecided yet

The ECC capable motherboard and memory would be twice as expensive as the the non-ECC versions

What are your thoughts on this? Do each the builds make sense?

Thanks!

Edited October 19, 2025Oct 19 by konishkichen