Question Is 1R x 8 DDR4 64G RAM stick ever existed?

[Wing901]

The specification(regarding ram) of GA-X99-UD5/UD7 WIFI shows as follows:

8 x DDR4 DIMM sockets supporting up to 128 GB of system memory
* Support for up to 512 GB of system memory when using Registered DIMMs.

But the menu (ram installation section) says, "If you are using a RDIMM memory, make sure it is a 1Rx8 one."

Does it sound strange?
That means if you install 512 GB of system ram, you have to use 64G 1Rx8 ram stick. I wonder if this type of ram is ever existed.

 

[Lutfij]

You should look through the memory QVL for that motherboard or you need to look for ram kits that had the designed for X99 sticker/badge on them.

https://www.cdw.com/product/kingsto...rx8-ecc-registered-dimm-server-memory/7404617

 

[Wing901]

You should look through the memory QVL for that motherboard or you need to look for ram kits that had the designed for X99 sticker/badge on them.

https://www.cdw.com/product/kingsto...rx8-ecc-registered-dimm-server-memory/7404617

I couldn't find any 1R x 8 ddr4 16G ram stick from internet, not mention 64G. Maybe this specs can only be found on ddr5 category.