Ram compatibility with asus prime b350 plus

Sorry to bump an old thread..., that might be good advice but I followed that one myself and my 2666 MHz Corsair Memory still won't go above 2133 MHz. I just emailed ASUS for advice.

How are you setting the speed, enabling XMP (or A-XMP) and selecting 2666?
And what board/rev?

Hi clutchc, I'm not setting the speed manually, I don't really know how. Basically the 2133 MHz speed is displayed in the BIOS. I built this PC last week and first noticed the anomaly during first boot when entering the UEFI BIOS. If it helps, after reading elsewhere I did experiment with enabling D.O.C.P. which did correctly identify my memory as 2666 MHz however the red box above still shows 2133 MHz. See screen shot below.

Please note that I am aware these boards are known to have these memory issues though sadly this news came too late for me, I only found this out after having built it. So far I've resisted tinkering with the timings (I think that's what it's called) largely due to my inexperience. That said I'm confident to experiment if I know what to look for and if one of you more knowledgeable guys would kindly advise me further.

Main Board: ASUS Prime B350 Plus

Processor: Ryzen 5 Hex Core 1600 65W

RAM: Corsair Vengeance LPX 2x8GB - CMK16GX4M2A2666C16R (as found on ASUS QVL)

Screen Shots - Image Link


UPDATE!!

So I had a stiff drink and put on a brave face and had another go at sorting my issue out. I have re-enabled D.O.C.P. but notice memory frequency was still showing 2133 MHz, HOWEVER..., after checking the DRAM Timings I see some changes. The values shown coincidentally match those depicted in the ASUS QVL, i.e. 16-18-18-35

I saved the BIOS changes and after successfully rebooting I checked the Windows Performance Monitor and strangely this does show memory frequency as 2666 MHz - Result!!!! (I think)?

Please see all attached images in the OneDrive link above, hopefully these will explain what my lack of knowledge can't.

UPDATE 2!!

Call me dumb but it hadn't occurred to me that after making the previous changes I needed to then revisit the BIOS at next boot to see the changes in effect, doa'h!!!!!!!!!!!!!!!!!

Anyway, if you look at those images I've posted in my OneDrive you will see in the final BIOS capture called 'SUCCESS' I did indeed achieve the end result all by myself Not bad for someone who has never overclocked before!

I think I can safely say my question has been answered even if I did find the answer myself

Thanks anyway!

That is the best way to arrive at the correct answer. By doing it one's self. Most boards require the changes you make to BIOS to become active only after you re-boot... as you so happily found out. Good job.

Thanks clutchc, I've just got to figure out now how to re-enable 'safe boot'. Not sure if I should do that as my graphics card doesn't support UEFI BIOS though bizarrely it did boot into it okay at initial launch.

Unless you have a reall, really ancient gfx card, it shouldn't matter if the board boots UEFI or legacy. I stuck an old HD-3650 in mine for bench testing before assembly and had no issues. Maybe I'm not understanding your query.