Intel 12th Gen CPUs (Alder Lake) and 13th Gen CPUs (Raptor Lake) DDR5 support

RemusM

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Because we get more and more complaints on this subject:
the memory speed limitation has nothing to do with the motherboards and memory modules.
It's all about the CPU IMC.

This is the official DDR5 support for most of the top Raptor Lake CPUs (Core i9-13900K, Core i7-13700K, etc):
Intel_13th_DDR5.png


This is the official DDR5 support for most of the top Alder Lake CPUs (Core i9-12900K, Core i7-12700K, etc):
Intel_DDR5.png

Anything faster is not guaranteed to run (stable).
As you can see, there is a significant speed limitation in case of 4 memory modules.

Now let's take a look at MSI's flagship MEG Z690 Godlike:
MSI_Z690_DDR5.png

You will notice the same limitation in case of 4 memory modules (single and dual rank both): 4000MHz.

Also be aware of this rule: more memory you have, lower speed you'll get.
So don't expect stability above 5200MHz in case of 64 or 128GB memory.
 
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Switch0r

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The webpage for DDR5 memory support is not loading for me, can this be fixed?
I want to choose memory for my new board 1DPC 2R Max speed up to 5400+ MHz
Thanks!
 

RemusM

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The webpage for DDR5 memory support is not loading for me, can this be fixed?
This link works for me:
 

Switch0r

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This link works for me:
Yes, now it works. You fixed it? :)
 

RemusM

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Because I got questions on this subject:
This update did not change anything.
It means "the motherboard is able to run 4 modules at 5600MHz, but most of the current CPU IMCs are limited to 4000MHz"

MSI_MEG_Z690_GODLIKE.png
 

cidmec15b202ed

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Dear Support Team,

I'm using Corsair Dominator Platinum RGB CMT32GX5M2X5600C36 DDR5 memory kit with MSI MPG Z690 Carbon WiFi Mobo.
With BIOS version 7D30v14 the memories run on 6200 Mhz and sometimes on 6400 Mhz too. With Dram voltage/Vdd 1,250V started on 6200Mhz. It was more stable on 1,380 V
With BIOS version 7D30v17 (Description: - Fine-tuned memory compatibility.) the maximum is 6000 Mhz.
No boot at all on 6200 even if I raise the Dram voltage and Vdd to higher like 1.380V.

Could you be so kind to explain what does "Fine-tuned memory compatibility" means?

I do like to use the memory on 6200 Mhz but I do not know what was changed and why it is not booting with the old setting by now.

Thank you in advance!
Br, Jozsef
 

RemusM

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I'm using Corsair Dominator Platinum RGB CMT32GX5M2X5600C36 DDR5 memory kit with MSI MPG Z690 Carbon WiFi Mobo.

I do like to use the memory on 6200 Mhz
"Rated" means already overclocked, undertimed and overvolted.
They were rated at 5600 because they failed certain factory tests at higher speeds.
So what you are trying to do is a bad idea from the very beginning.
The bottom line:
presuming you were lucky with your CPU IMC overcloking capabilities, if you want memory at 6200 you need to buy a factory matched and tested kit at 6200 or 6400MHz.
 

cidmec15b202ed

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I have to say is your communications ir very unrespectful.

Bad idea with a gaming computer made for overclocking??? Are you really sure? Why MSI developed Memory try it?

With your answer you said that MSI don't support overclocking anymore....

I kindly asking MSI to answer to my question by an MSI expert.
 

RemusM

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I have to say is your communications ir very unrespectful.

Bad idea with a gaming computer made for overclocking??? Are you really sure? Why MSI developed Memory try it?

With your answer you said that MSI don't support overclocking anymore....

I kindly asking MSI to answer to my question by an MSI expert.
"Bad idea" does not mean disrespectful.
Your memory modules are factory overclocked to 5600MHz (that's XMP).
Trying to run them at 6200MHz is wrong!
 

skigeno

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So I mgetting a mpg force ddr5 mb and have a 137000kf. The QVL says 6400mhz supported Gskill. The ram is 2x16=32gb. Does this mean it wont run that speed of ram?
 

RemusM

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So I mgetting a mpg force ddr5 mb and have a 137000kf. The QVL says 6400mhz supported Gskill. The ram is 2x16=32gb. Does this mean it wont run that speed of ram?
6400MHz is an overclocking rating for the13700KF IMC.
That means the result (stability) is not guaranteed.
But the 13th Gen IMCs are 800MHz faster than 12th Gen IMCs.
Intel guarantees 5600MHz in case of 64GB memory for these CPUs.
So I would say you have a very good chance for stability with 2x16GB at 6400MHz.
 

Nichrome

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I have to say is your communications ir very unrespectful.
Bad idea with a gaming computer made for overclocking??? Are you really sure? Why MSI developed Memory try it?
With your answer you said that MSI don't support overclocking anymore....
I kindly asking MSI to answer to my question by an MSI expert.
MSI doesn't answer on the forums. If you wish to get an answer directly from MSI, see >>How to contact MSI.<<
Also RemusM is right on what he said. I wouldn't call it "bad idea", but generally it's unlikely to go through without further tinkering with timings and voltages.
It's always a mystery to me when people come over to forums where folks with quite a bit of an experience tell them the truth, and they complain as if there was a different truth available lol
We can either tell you the truth, or beautiful lies. But if it's beutiful lies you are looking for, then I'd go for talking with some political party instead.
 

mjall

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im trying to keep up-to-date here with what i'm reading so are you saying that Alder lake processors do not support more than 4800mhz of DDR5 despite the support of the motherboards? if that's case, can I still install and run ram that support higher than 4800mhz with no issues?
 

Nichrome

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im trying to keep up-to-date here with what i'm reading so are you saying that Alder lake processors do not support more than 4800mhz of DDR5 despite the support of the motherboards? if that's case, can I still install and run ram that support higher than 4800mhz with no issues?
It all depends on what the CPU supports. If it says 3200MHz then that's the maximum guaranteed to work, and anything above is literally overclocking.
And yes, you can use higher rated RAM. It will either work at what it's rated at, or will slow down to what the CPU supports. It's all IMC gamble whether RAM will work above CPU spec or not.
 

mjall

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It all depends on what the CPU supports. If it says 3200MHz then that's the maximum guaranteed to work, and anything above is literally overclocking.
And yes, you can use higher rated RAM. It will either work at what it's rated at, or will slow down to what the CPU supports. It's all IMC gamble whether RAM will work above CPU spec or not.
thanks for the above, I'm just building a new pc and I placed an order for corsair 5200mhz so let me jump quickly to cancel the ram from the order and change them with something of 4800mhz, better safe than sorry.
 

Nichrome

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thanks for the above, I'm just building a new pc and I placed an order for corsair 5200mhz so let me jump quickly to cancel the ram from the order and change them with something of 4800mhz, better safe than sorry.
Nah you'll be fine. Those rated at 5200MHz is also better quality, as basically those rated at 4800MHz didn't make it to become 5200MHz.
 

Nichrome

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The only time I would cancel an order like you said, is if the price difference is actually worth it. But if the difference is $30 or less then I'd keep it as it is.
 

ra15b602db

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I have MSI MPG carbon z690 EKX running 13900k and 64GB (2x32GB) Corsair DDR5 Vengeance Black, PC5-44800 (5600). (Bios 7D30v191 )
Using XMP profile 1 they are running quite happily at 5600MHZ
 
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