Intel 12th-Gen CPUs (Alder 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 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.
 

Switch0r

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May 17, 2009
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54
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

Well-known member
LIEUTENANT COLONEL
Joined
Nov 16, 2006
Messages
2,718
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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Joined
May 17, 2009
Messages
54
This link works for me:
Yes, now it works. You fixed it? :)
 
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