[SOLVED] Gigabyte GA-X299-UD4-PRO X299 UD4 Pro LGA 2066 ATX Motherboard - 208GB RAM Question

[Ragahv]

Hello. I currently have 208 GB of RAM installed on my system. I have the following RAM installed on my
Gigabyte GA-X299-UD4-PRO X299 UD4 Pro LGA 2066 ATX Motherboard:

Corsair Vengeance RGB PRO CMW32GX4M2C3200C16W 32GB 3200MHz DDR4 * 2
G.SKILL TridentZ RGB Series 32GB (2 x 16GB) DDR4 3200Mhz F4-3200C16D-32GTZRX * 2
G.Skill Ripjaws V 32GB (2x16GB) DDR4 3200MHz PC4-25600 Memory F4-3200C16D-32GVK * 2
DDR4 - 2666 MHz Micron Technology 8ATF1G64AZ-2G6E1 8GB * 2 - This one is ECC - all other modules are not ecc

However, i see only 112GB addressed in Windows 10 Pro for Workstation X64. Why is this? The Micron RAM is ECC but the others are non ECC or unbuffered. I know the dif between non ecc and ecc. My board says this: that the board supports up to 512 registered memory only if my cpu has 10 cores or more and ram is ecc but ram is not ecc and board specs say if cpu is 10 core or more then the 512GB ram non ecc or ecc will be supported. Why 208GB non ecc ram and ecc mixec not working?

 

[Nemesia]

1. 8 x DDR4 DIMM sockets supporting up to 128 GB of system memory.
   * Supported when using a 44-lane or 28-lane CPU (6-core or above).
2. 4 x DDR4 DIMM sockets supporting up to 64 GB of system memory.
   * Supported when using a 16-lane CPU (4-core).
3. 4 channel memory architecture.
   * Supported when using a 44-lane or 28-lane CPU (6-core or above).
4. Dual channel memory architecture.
   Supported when using a 16-lane CPU (4-core).

Your board support 128GB of RAM. Where did you see that your board supports up to 512GB of RAM?

And mixing all these brand and model RAM together isn't recommended. Your RAM should be 1 kit. In your case 8x16GB KIT for 128GB total.