Sorry for my English!
On ARC Intel i7 or i9 not support over 128GB RAM. But on some sites like this http://greentechreviews.ru/2018/02/01/obzor-materinskoj-platy-asus-ws-x299-sage/3/ Обзор материнской платы ASUS WS X299 SAGE - Page 3
and on the site Gigabyte https://www.gigabyte.com/Motherboard/X299-AORUS-Gaming-3-rev-10# sp https://www.gigabyte.com/Motherboard/X299-AORUS-Gaming-3-rev-10# sp
Support for Registered DIMM 1Rx8/2Rx8/1Rx4/2Rx4 memory modules (operate in non-ECC mode) * R-DIMM is only supported by BIOS version F7 and earlier versions.
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Thank you for joining the Intel Community Support.
Please specify the following information:
-Processor (s) in question.
Also, I know that you are providing information about the memory specifications for the processor, but I would appreciate if you could ask a question to better assist you.
Here is my question. On the ARC intel site i7 and i9 for X299 platform support max 128 GB. But on the official gigabyte site You can read information about 512GB. How I must understand that? Will be work correct i9 or i7 (7820X) with 512GB RAM? Man on the russian site I know him and he told that on his ASUS WS X299 SAGE Mobo all 256GB work correct and line on еру plate physically can support more than 128GB RAM. Why intel mark about only 128GB? If on 7820X 256GB works? How does it possible or what information is hide? I know than XEONs CPU can support more than 512GB RAM. Does it just marketing to part to sectors servers and users? I know that there is no any versions of CPU. intel make one TOP CPU, and lock down cores and select not very vell crystall to make other series like i7 i5 i3 (under the plate the same crystall). So my thoughts light in my mind that is no real difference in i9 and XEON W CPU that is the same crystall and both can work with more 512GB (but to have two sectors for increase money to pocket). And back to my question Why intel wrote about 128 Gb max, but in real life this CPU can use more RAM? (I hope I could clearly express my thoughts and question)
The information provided at https://ark.intel.com/ is the maximum memory capacity validated for this processor design. Using the system memory recommended for a processor allows you to keep optimal operation and long-term reliability of the processor.
It is worth mentioning that the memory controller that is integrated in the processor die controls how much memory is supported. Using more memory than the recommended can produce system instabilities and even shorten the life of the processor.We need to ensure that users have access to data that has been validated by us to keep your system up and running.
Keep in mind that manufacturers let you customize BIOS settings to make the most out of your system and it is also recommended to get additional information from them as to how you can build your system appropriately.