Best RAM Upgrade for the QNAP TS-464 (2026 Guide)

Best RAM upgrades for the TS-464

The TS-464 takes standard 260-pin DDR4 SODIMM, non-ECC, and tops out at 16GB across its two slots.

Which should you pick

Why 16GB is the real ceiling here

The TS-464 ships with 8GB of DDR4 as standard and QNAP officially lists 16GB as the maximum across its two SODIMM slots. This is a hard limit set by the Celeron N5095's memory controller, not a QNAP firmware restriction, so no BIOS update or QTS patch will unlock more. If you see RAM listings claiming 32GB compatibility for this model, ignore them. Two 8GB sticks running in dual-channel is the most memory this board will ever recognise.

In practice, 16GB is a comfortable amount for what the TS-464 is built to do. This is a 2.5GbE, quad-core Celeron NAS aimed at home labs, media serving with hardware transcoding, and small business file sharing, not a platform for memory-hungry virtual machines or large databases. Going from 8GB to 16GB noticeably helps with QTS caching, multiple Docker containers, and Plex or Jellyfin running alongside background tasks like Snapshots or McAfee scanning. It will not turn the N5095 into something it is not.

Because the two NVMe slots on this model are for caching or a storage pool rather than expanding system memory, do not confuse M.2 capacity with RAM capacity. They are separate resources and one cannot substitute for the other. If you are chasing more responsive random I/O rather than more headroom for applications, the NVMe slots are the place to look, not further RAM purchases beyond 16GB.

One honest caveat