F4-4000C15Q-32GTRG with Ryzen 5950X ?

[Letzelter]

Hello,

I would like to have advice before purchase memory to replace my current memory (2400 Mhz CL 16), I would like to take the opportunity to take the best possible with 550€ max. This is for hybrid computer, for work and gaming.

Currently I have in my computer:

CPU: AMD Ryzen 5950X
Motherboard: MSI X570 MEG Unify
Watercooling AIO: MSI MAG CORELIQUID 360R
GPU: I wait for custom 6900 XT
Case: Corsair obsidian 750D Airflow

I look for 509€: F4-4000C15Q-32GTRG (link: https://www.gskill.com/product/165/2...50V32GB-(4x8GB) ), but I would like to do overclocking with this memory, to set CAS 14-14-14-36, or 14-16-16-36 if 14-14-14-36 is not possible (because I read in Ryzen, CL only works with even numbers, if I have CL 15, it will go to CL 16).

I read AMD Ryzen have problems with hight voltage (this memory have 1,5), I have 2 questions about this:

- Is this memory works with my Ryzen 5950X without overclock ? If yes, in what conditions ?

- Can I do the mentionned OC ? If yes, how ? I am a beginner in overclocking.


Thank you in advance for your help and sorry for bad english, I'm french.

[emissary42]

You can use uneven CL values, but it requires GDM = Off, which might or might not possible with your setup/CPU. This is a platform restriction and does only apply to CAS latency. So tRCD & tRP can always have either even or uneven values, which is why Trident Z Neo models with timings like 14-15-15 or 16-19-19 exist.

For kits like F4-4000C15Q-32GTRG it is very unlikely that they will be tested for AMD compatibility. Because of that, the XMP functioning on AMD motherboards will not be officially guaranteed. As a Ryzen user you would primarily buy such a kit to manually overclock it and just ignore the XMP. With that being said, going from 4000 CL15 to CL14 will likely require a voltage increase. However a downclock to 3800/3866 with CL14 should be possible at its specified XMP voltage of 1.5V (YMMV).

This is a very decent guide, that explains most of the basics of manual memory overclocking:

https://github.com/integralfx/MemTes...0OC%20Guide.md