Question ASUS PRIME A320M-K Max supported RAM and RAM capacity per slot

[MrKarolus]

I own PC with ASUS PRIME A320M-K (with Ryzen 7 CPU). ASUS specification page https://www.asus.com/lt/Motherboards/PRIME-A320M-K/specifications/ states information about memory that:
AMD Ryzen™ Processors: 2 x DIMM, Max. 32GB, DDR4 3200(O.C.)/2933(O.C.)/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory

But if I type In Command Prompt window, wmic memphysical get maxcapacity it shows: MaxCapacity 134217728. Which converted to gigabytes is 128 GB. Because of this I'm confused of what amount of RAM I can install on my PC.

My questions are:

1. What is the maximum amount of RAM I can have on my system?
2. Since there is 2 slots for RAM cards, how many GB of RAM I can have per one RAM slot?

 

[rgd1101]

1)32GB
2)32/2

 

[MrKarolus]

@rgd1101 Thank you for response. I read about ASUS PRIME A320M-K that it's not advised to overclock it without some sort of cooling system. So I have started to look for 2666 RAM to buy, because if I understand correctly this is the highest mhz I can install without a need to overclock motherboard ?

I was planing to buy this RAM: https://www.varle.lt/atmintys-ram/d...-lpx-juodas-32gb-2x16gb-2666mhz--2470014.html
Or this one: https://www.varle.lt/atmintys-ram/k...ddr4-cl16-dimm-kit-of-2-hyperx--11433507.html

Then I read that Ryzen goes well only with Samsung manufactured RAM chips, but as far I understand Samsung doesn't make 2666 RAM chips, so if I buy one of above mentioned there is a chance that it won't run at expected speed?

I have also checked in task manager and it shows that current RAM speed is 2133, but when I bought PC in 2018 it was advertised as 3000 mhz ( https://www.kilobaitas.lt/KILOBAITA...atalogStoreDetail.aspx?CatID=PL_407&ID=682399 ). I have checked in CPU-Z and it says that RAM was manufactured by SK Hynix.

What RAM would you advise to buy in this situation (3200(O.C.)/2933(O.C.)/2666/2400/2133 MHz ) and which brand (Corsair, Kingston, other)?