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Question Lower RAM frequency than advertised

Jun 2, 2020
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Hello guys,

Here is advertised RAM speed for my ASUS TUF FX505DU :



So as You can see, it should be able to run the 2400MHz RAM.

But when I check the CPU-Z results :



I multiply the DRAM Frequency and I get: 933,0 * 2 = 1866MHz RAM instead of 2400MHz.

I checked the Hynix and Micron RAM cards, and they are in fact able to run at even 2666MHz, and yet my results are much lower.

What can be the cause of this low ram frequency?

EDIT: Here is very similar problem, exactly the same laptop as mine: https://community.amd.com/thread/244538
 
Hello guys,

Here is advertised RAM speed for my ASUS TUF FX505DU :



So as You can see, it should be able to run the 2400MHz RAM.

But when I check the CPU-Z results :



I multiply the DRAM Frequency and I get: 933,0 * 2 = 1866MHz RAM instead of 2400MHz.

I checked the Hynix and Micron RAM cards, and they are in fact able to run at even 2666MHz, and yet my results are much lower.

What can be the cause of this low ram frequency?

EDIT: Here is very similar problem, exactly the same laptop as mine: https://community.amd.com/thread/244538
What frequency do you see in BIOS ?
 
Reactions: Thumper001
Memory modules sold as Single Modules have no guarantee to be compatible together when used in multiples.

There is no specification as to how your memory combination should run. Your free to play around with the settings to see what you can get.
 
Here is the only thing I've found about RAM in BIOS View: https://imgur.com/a/mlPMJJG?fbclid=IwAR34Ni89MbI0uIJYT99M8OCnntZg-KRE7W2I6qkB0l8xwKXW5AT5gDeGjBc
(sorry for photo, can't use screenshot in BIOS).
I don't have either XMP or DOCP to change.
I'm curious that CPU-Z don't show any XMP, only Jedec settings.
Did you look under Advanced tab in BIOS ?
This program http://www.softnology.biz/files.html can give you more info about your RAM.
 
Jun 2, 2020
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I'm curious that CPU-Z don't show any XMP, only Jedec settings.
Did you look under Advanced tab in BIOS ?
This program http://www.softnology.biz/files.html can give you more info about your RAM.
The advanced tab shows this: View: https://imgur.com/a/TS5AbyA?fbclid=IwAR0iprCRNZFVQeDt10fUgSIdhl1CqQ_wqDByvLwJE1DPEWEP6PmfjBiAKpc

Not really familiar with any of these settings, so I left it as shown.
Thanks for the program, I'll check it out and post the results here.
 
Jun 2, 2020
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see in the bios if you could set manually setting to 20-19-19-43-61 dont touch voltages and apply they both have similar speed at these settings .
In posts above I've posted options available in my BIOS , and I don't have any of these options You described, nor XMP / DOCP.

Additionaly I've found that task meneger shows proper values :


Is it possible that CPU-Z is somehow conflicted with my system and shows incorrect numbers?
 
In posts above I've posted options available in my BIOS , and I don't have any of these options You described, nor XMP / DOCP.

Additionaly I've found that task meneger shows proper values :


Is it possible that CPU-Z is somehow conflicted with my system and shows incorrect numbers?
Yes possible tthat CPU-z screwed up but that's what windows usually do :)
There are other programs to show memory data, Aida for instance, also https://www.majorgeeks.com/files/details/siw_(system_info).html
Anyway, that RAM doesn't have any XMP for sure, weird.
 

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