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PRIME Z790-P with 4x Kingstone DDR5, 32 GB, 5600MHz, CL40 (KF556C40BBK2-64)

LukePentakl
Level 7

Hi,
I have asus z790-p with one pair of kingstone (KF556C40BBK2-64) which is 2x32GB DDR5 (two banks used, two are empty). I have 13700K CPU.
Memory is working on 5600 speed right now in dual channel mode.

I want to buy second pair of exactly the same memory. Because I read a lot of posts about issues with 128GB memory on asus motherboards, I want ask you:

when I buy second pair of exactly the same memory I have, is it will be working on 5600 speed? or not?
do you have any experience with similar situation?

Thank you for any help or advice.

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1 ACCEPTED SOLUTION

Accepted Solutions

Hello, it says socket support 1,2 modules in the QVL because it's only validated for one kit. Mixing and combing memory kits is not supported or recommended by either the memory vendor or the motherboard vendor.

9800X3D / 6400 CAS32 / ROG X870 Crosshair / TUF RTX 4090

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6 REPLIES 6

LukePentakl
Level 7

obraz.png

I found my memory in asus specification, but I don't know how to read it.

Size is 2x32 in DS is it mean that 2*DS equals 4x32?

Hello, it says socket support 1,2 modules in the QVL because it's only validated for one kit. Mixing and combing memory kits is not supported or recommended by either the memory vendor or the motherboard vendor.

9800X3D / 6400 CAS32 / ROG X870 Crosshair / TUF RTX 4090

thank you,

I have filling that I was fooled by Asus, couse in instruction is clearly written about support  up to (max.) 128GB,
but memory support table shows that there is any combination of any memory that ends up with 128GB.

I'm choosing your answer as solution, but it not solves anything for me.

The board does support 128gb, just not by combining multiple kits. Even the memory vendors stipulate not to do this. Best of luck. 🙂

9800X3D / 6400 CAS32 / ROG X870 Crosshair / TUF RTX 4090

LukePentakl_0-1687797831243.png

screen is taken from instruction of this board, instruction which is published on asus support page for this m-board.
that is why I have complaints to Asus,
and "The board does support 128gb..." - this statement is very sad to me, because in instruction is declared something else.

Of course I understand your answer, I;m writing this only for others who can read post in future.

I don't think you understand the context of what you're asking. The board does support 128GB as the manual states. What it does not support is when a user buys multiple memory kits and then tries to overclock them together, which is what you are doing in this instance.

If you want to run the kit(s) at the default operating frequency for that density and configuration, you won't have an issue. Please see Intel's Raptorlake memory support chart below.
Intel_13th_DDR5.png

9800X3D / 6400 CAS32 / ROG X870 Crosshair / TUF RTX 4090