Question RAM refuses to run at advertised speed (4000Mhz)

mathieub

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Jan 6, 2014
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Im running a Ryzen 9 5900X on an Asus X570-PRO with Trident Royal Z CL18 4000MHZ ram. But no matter what I do wether its the DOCP profile or setting the timings manually the computer just reboots itself until the BIOS resets.

Im even running the latest BETA bios at this point and its a 4X8 kit.

Any ideas?
 
Last edited:

faalin

Judicious
Nether the GTRS or GTRG kits are on the QVL for that board. Looking at G.Skill's webpage both those kits are only verified on the intel z390 and z490 boards. The G.Skill kits that are on the QVL are GTZ kits and surprisingly enough have better timings then the flashy royal kits.


You could try with only installing 2 stick just to see if you can get them working at the correct speeds, then if they are working add in the other 2 sticks and tweek voltages.
 

jojesa

Illustrious
A BETA BIOS could have bugs that could cause hardware incompatible.
I wouldn't recommend a BETA BIOS unless is fixing and important and vital feature. BETA bios or software has not yet undergone thorough testing so it could cause all sorts of issues.

Running 4 modules at high speeds requires more work on the memory controller, so going with a tested kit will deliver better results.
 

mathieub

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Jan 6, 2014
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A BETA BIOS could have bugs that could cause hardware incompatible.
I wouldn't recommend a BETA BIOS unless is fixing and important and vital feature. BETA bios or software has not yet undergone thorough testing so it could cause all sorts of issues.

Running 4 modules at high speeds requires more work on the memory controller, so going with a tested kit will deliver better results.
Yeah just noticed the compatibility list thing, they run at 3800mhz no problem but just to push to 4000 the system doesnt like it.
 

jojesa

Illustrious
Yeah just noticed the compatibility list thing, they run at 3800mhz no problem but just to push to 4000 the system doesnt like it.
Keep checking for BIOS updates...they usually fix or add compatibility for more RAM models.
By the way there will be not noticeable diferencie in performance between 3800MHz and 4000MHz at CL 18.
You might be able to select a slower speed (3733MHz) but tighter timings and that will provide better performance (ratio 1:1)...since the Infinity Fabric is tied to the memory clock
 

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