Question 256GB DDR5 RAM Compatibility

[neo77s9p]

Hi All,

Will Ryzen 7 7700x processor installed in MSI MAG Mortar B850M motherboard support 256 GB RAM, i.e. 4x64GB DDR Modules viz. CRUCIAL CP2K64G56C46U5

 

[neo77s9p]

Hi All,

Will Ryzen 7 7700x processor installed in MSI MAG Mortar B850M motherboard support 256 GB RAM, i.e. 4x64GB DDR Modules viz. CRUCIAL CP2K64G56C46U5

 

[ak47jar3d]

Is it on the motherboard's QVL list?

 

[neo77s9p]

No... though MSI have stated taht all their motherboards supporting 256GB RAM, the maximum capacity of each module is 48GB only as per last refresh in April 2025

 

[CountMike]

Hi All,

Will Ryzen 7 7700x processor installed in MSI MAG Mortar B850M motherboard support 256 GB RAM, i.e. 4x64GB DDR Modules viz. CRUCIAL CP2K64G56C46U5

Yes but at reduced speed with all 4 memory slots are used. Shouldn't be e problem with 5600MHz.

 

[Bob.B]

No... though MSI have stated taht all their motherboards supporting 256GB RAM, the maximum capacity of each module is 48GB only as per last refresh in April 2025

Make sure of the return policy and try it.

 

[Zerk2012]

Hi All,

Will Ryzen 7 7700x processor installed in MSI MAG Mortar B850M motherboard support 256 GB RAM, i.e. 4x64GB DDR Modules viz. CRUCIAL CP2K64G56C46U5

That is a 128GB set not 256GB.
Using 2 sets it might not work together.

Why would you need 256GB of memory?

 

[neo77s9p]

I had a call w MSI Tech and as per him the Mboard will support 256GB, i.e. 4x64GB 5600Mhz Modules along w Ryzen 7 7700X CPU. The QVL doesn't contain 64GB modules as they're yet to be officially tested by MSI.

 

[neo77s9p]

I had a call w MSI Tech and as per him the Mboard will support 256GB, i.e. 4x64GB 5600Mhz Modules along w Ryzen 7 7700X CPU. The QVL doesn't contain 64GB modules as they're yet to be officially tested by MSI.

 

[Eximo]

CL46 5600, a decent chance to work, but there is no guarantee going beyond 2 sticks.

There are some official 4x48GB kits:

https://pcpartpicker.com/product/BX...-gb-ddr5-5200-cl38-memory-cmk192gx5m4b5200c38