X10DRI Max ram speed

[gtech1]

Looking at this motherboard:

X10DRi | Motherboards | Products | Super Micro Computer, Inc.

X10D, X10DR, X10DRi, X10DRi

www.supermicro.com

Does anyone know why there's an X next to 2400 mhz speed in the Ram description ?

Memory Type

2400/2133/1866/1600MHz ECC DDR4 SDRAM 72-bit

I checked the manual but there's no indication there

 

[i386]

Does anyone know why there's an X next to 2400 mhz speed in the Ram description ?

"† BIOS version 2.0 or above is required"
aka you need v4 cpus for that speed. v3 I think went up to 2133MHz...

 

[gtech1]

I don't think so. I think these signs go together, for example:

Cores / Cache	Up to 24 cores / Up to 55MB† cache
Note	† BIOS version 2.0 or above is required

So in this case you need Bios 2.0 for up to 55MB of Cache

For the RAM speed, the same symbol is also a bit above:

Memory Capacity	Up to 1TB Registered ECC RDIMM, DDR4-2133MHz; Up to 2TB 3DS ECC LRDIMM, in 16 DIMM slotsUp to 2TB ECC 3DS LRDIMM, 1TB ECC RDIMM
Memory Type	2400/2133/1866/1600MHz ECC DDR4 SDRAM 72-bit

So does that mean that 2400Mhz only works with 2TB of ram, or that @ 2TB you can't get 2400Mhz ? That X is quite confusing lol because usually it means 'not'

 

[i386]

https://www.supermicro.com/manuals/motherboard/C606_602/MNL-1491.pdf

Search in that pdf for "memory"; 2.400MHz only works with v4 cpus and certain memory configurations (rdimm 1dpc vs 2dpc etc.)