Have you recently purchased a new DS920+ Synology NAS or are you planning the purchase and you are undecided about what RAM memory to buy? This article comes to your aid. The kind of memory you will need to buy for your DS920+ Synology NAS device is Samsung 8GB DDR4 CL19 2666MHz Product Code: M471A1K43CB1-CTD or the official Synology RAM module D4NESO-2666-4G. In fact, these RAM modules are compatible with both Synology DS920+ and DS720+. Update: February 1, 2021 DS920+ also support Arch SY4GB2666SOr1b8-TZ001 RAM memory.

The original preinstalled RAM, which is the D4NESO-2666-4G, is bound to the motherboard in your DS920+ NAS (they’re actually welded together).

DS920+ = CPU Intel Celeron J4125 = Supports 8 GB RAM.

If you install the Samsung 8GB DDR4 CL19 2666MHz CL19, 1.2v Product Code: M471A1K43CB1-CTD, you will have a total of 12 GB of RAM (4+8) on your DS920+ Synology NAS.  (TESTED: 100% compatible.)
If you install the Synology 4GB DDR4 CL19 2666MHz CL19, 1.2v Product Code: D4NESO-2666-4G, you will have a total of 8 GB of RAM (4+4) on your DS920+ Synology NAS. (TESTED: 100% compatible.)
Note: Update February 1, 2021 – DS920+ perfectly support Arch SY4GB2666SOr1b8-TZ001 RAM memory.
Note: As you well know, I do not sponsor any products, nor does my website sell or earn anything or make any kind of profit off the sale of any product. My recommendations are genuine.
Note: Read more about RAM CL Latency – Synology: What is RAM CL Latency?
Note: Synology: How Long Does The Memory Test Last?
Note: mariushosting is not responsible for any malfunctions that may result from the instructions given above. The tests are done exclusively by me and I like to share them with the rest of the world.
Note: Blogs and forums recommend the 16 GB or 8 GB RAM from Crucial. However, some users have shared with me that the Crucial CL19 RAM memory has some incompatibility issues with the original preinstalled memory on the DS920+ NAS. It would appear that the Crucial memory does not always read SSD-NVMe M.2 cache. Also, DSM will show a notification listing the Crucial or HyperX RAM as non official at every start up/reboot. The notification will say: System Event: Detected non-Synology memory module. Please refer to our official website and select authentic Synology memory modules for better system reliability.

This post was updated on Thursday / August 11th, 2022 at 12:34 PM