Public Service Announcement - Max Memory for Synology x18 Series - J3x55 CPU

server-synology

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For all who read this:

There is incorrect information circulating in the forums . The maximum addressable memory on an Intel J3355 or J3455 CPU is 8 GB per the Intel "Ark".

The Synology BIOS reads the DIMM information, totals the value, and displays to you what it finds. It cannot use more than 8 GB.

For best use in Plex, if you are adding memory, you should upgrade using an '8 GB kit' . These come as two matched sticks of 4 GB. This is what allows dual channel mode to enable and speed up hardware transcoding by doubling total memory bandwidth available (2 paths of 64 bits instead of 1 when mismatched). It will not improve CPU audio transcoding performance but does allow the GPU/ASIC to better coexist with the CPU, which is doing audio transcoding, resulting in less contention for the memory bus when both are occurring simultaneously.

https://ark.intel.com/products/95594/Intel-Celeron-Processor-J3455-2M-Cache-up-to-2_3-GHz

Similarly, the J3355 CPU also has the same 8 GB memory limitation.
https://ark.intel.com/products/95597/Intel-Celeron-Processor-J3355-2M-Cache-up-to-2_5-GHz?q=j3355


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