Ryzen loves higher clocked speed DDR4, especially APU since on board graphic uses shared DDR4(upto 4GB) from system RAM....

My R5-2400G system(B450) uses XPG Spectrix D40 DDR4-3200 8GBx2

XPG has newer D60G 3200... check it out

Not sure which YouTube told you 2400 ram get similar results as 32000 ram.... lol

In the beginning my motherboard xmp profile auto set it to 2666, so I manually changed it to 3200(profile 2). It just work cinebench scrored higher in both processor and graphic side (YouTube have alot evidence)....

For your info, APU really need higher ram speed. It will give better system respond and another graphic too. If you don't intend to play overclock, then why don't get Intel instead, they got build-it graphic too (weaker than Ryzen)

Second both Intel and Ryzen system has a function called dual channel memory. It's your own choice you want buy 1 stick of ram.... 4GBx2 work better than one stick 8GB (YouTube have alot evidence)....

History:
My Ryzen mobo system at first can't detect this XPG Spectrix D40 DDR4-3200 8GBx2. I borrowed and a friend i5-7400 system to troubleshoot. Even my D40 RAM works in his i5. His Fury DDR4-3200 also work in my mobo. I just my R5 mobo can't detect D40 RAM. Later i found out, there are compatibility issues between R5 and RAM(designed for intel) from internet.... You need to let mobo train the RAM you installed(this process aka training). see this youtube https://www.youtube.com/watch?v=NjEHoQoNAhw

Recommendation:
First read mobo manual. Locate DIMM/RAM(your mobo has 4 DIMM slots) section. Find IF install 1 stick RAM, should plug into which DIMM slot.
try boot and train it.... If works, then installed 2nd sticks(mine is DIMM 2 & DIMM4) follow mobo manual

Second, after your mobo accepted D41 RAM. Go inside BIOS there are 2 XMP Profile 2666Mhz(auto selected) & 3200Mhz(profile 2)...
You just set it to profile 2. Done. Never need manual adjust voltage or clocks, just use XMP and i'm contented.


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