LOL I love Mark, and his well founded enthusiasm for exceptional hardware, but as the OP clarifies there in the opening that this is a QuickBooks local server box running Windows 10 SMB, that EPYC is an order of magnitude beyond what is economically sensible.
OP, get a B450 and a Ryzen 1600AF if you can find it, or a Ryzen 3 3200G @ $91 on Amazon if you can't. Some budget DDR4 3200 will do fine. This will let you use your nVME, and be way way more than up to the task of the QB services. I have one running on a Phenom II x3 and a 180GB Intel SSD, with 8GB DDR2, and it's basically instant for all the QuickBooks hosting activities. These Ryzens will be way out ahead. And at stock, unless you load up some encoding, they indeed should consume less than 35W doing the regular Windows + QB + SMB + updates.
I specify B450 there mainly for the flexibility should you decide to upgrade later on, or repurpose the box after local QuickBooks goes EOL, or whatever. The A320 boards don't run higher end CPU models generally, and are mostly made fairly cheaply, so it is my feeling that stepping up to the 450 is worth it. 470 and 570 are completely overkill for the vast majority of users (not least of all is that Ryzen doesn't need any OC to be basically ideal, and doesn't respond well at best anyway to that path). Anyway, if you really want to, nothing would prevent an a320 from functioning here.
For peace of mind I'd also throw a $20-$25 budget tower heatpipe HSF on it. These CPUs run so cool that even a fan failing won't really make much impact, but the bigger cooler will give you extra peace of mind for years of reliable cool operation. And a cooler CPU means a cooler Mobo VRM and socket region.
That's my take. I assume you already have configured QuickBooks before, but if you have any questions lmk. If it's going to sit headless and you want less interruptions, you might consider altering the network properties to fool Windows into thinking there is no internet, while still being able to function as an SMB share and .net/MySQL host for the QB data and db engine.