Best RAM upgrade for the TerraMaster F4-425 Plus

Best RAM picks for the F4-425 Plus

Three sensible ways to add or match DDR5 capacity depending on budget and whether you are topping up or building a matched pair.

Which should you pick

Why 32GB is the sensible ceiling here

The F4-425 Plus is built around an Intel N150 quad-core processor, a capable but modest chip aimed at efficient always-on NAS duty rather than heavy virtualisation. TerraMaster specifies 16GB as standard with a maximum of 32GB across two SO-DIMM slots, and that ceiling exists for a reason: the N150 platform simply has no practical use for more memory than that, regardless of what third-party sellers might suggest.

With three M.2 NVMe slots available for cache or storage pools and dual 5GbE networking, this unit is clearly aimed at users who want fast file serving and light-to-moderate app hosting, not a virtualisation farm. 24GB to 32GB of DDR5 covers Plex hardware transcoding, Jellyfin, a Docker stack with several containers, and NVMe caching with plenty of room to spare. Buying RAM beyond 32GB is not just wasted money, it is physically unsupported by the board.

One honest caveat