I'm a huge proponent of mATX because VERY few people will ever use all the slots on a full ATX board. There are always caveats to that statement:
- What add-on cards will/could you use?
- WiFi? - this is becoming increasingly common to have built-in
- Capture/TV tuner - less common every year, pretty rare already.
- Additional networking or storage cards - not very common
- How many slots is your GPU? - 2.5 to 3 slot cards are possible these days.
- Some boards will have a PCIe x1 slot above the main x16 slot. I prefer that.
- If you're going to buy a full ATX case anyway, there's little reason to go mATX.
Speaking of which, the most obvious difference between the two boards you listed is that the MSI B550M Pro-VDH WiFi has....WiFi built in. That would cost you an extra....$20-$30 to add to the Gigabyte.
Have you bought every other component already? Sometimes if we know what country you're shopping in and your budget, we can finagle some $$ around to re-balance a build.
Well the only thing I've purchased so far is the RAM(Crucial Ballistix 3600 DDR4 16gb CL16) so everything else is in the air.(we also bought a monitor 144hz, 1080p)
I've definitely decided on the Ryzen 5 3600 but haven't purchased it yet(I'm waffling b/c I don't know what the prices will be like)
You know which two mobo's I'm looking at.
The WiFi is a nice feature, no extra tuners or networking cards etc.
**I want to go with an M.2 drive(maybe WD Blue 500 or Crucial P2 500) for OS and maybe a 2TB HDD for bulk storage(cheapo I know)
**Video card-haven't decided(
open to suggestions). I've looked at the more expensive RTX 2060 and the lower cost GTX1650 Super. I don't know how many slots these need.
**Cases I've briefly looked at and like: CM MasterBox NR400, FD Meshify C which is the more expensive option, & the CM MasterBox MB320L ARGB.
PC is for my younger son who will be exclusively gaming on it, Rainbow Six Sieige, Apex, Overwatch, Valaront, Minecraft, you get the idea.
There you go, you know the entire story now.
I have 3 lists going on Pcpartpicker that have a few different parts(one of the lists I copied from you last week actually and have since modified)
If you can have a look and tell me what you think, It would be great.
Thanks man.