Side-by-side specifications of the Synology RS2416+ and RS2416RP+, from official datasheets. Differences are highlighted.
| RS2416+ | RS2416RP+ | |
| CPU | Intel Atom C2538 2.4GHz | Intel Atom C2538 2.4GHz |
| Cores / threads | 4 cores / 4 threads | 4 cores / 4 threads |
| RAM (base) | 2GB DDR3 | 2GB DDR3 |
| RAM (max) | 6GB | 6GB |
| Drive bays | 12 | 12 |
| Expandable to | 12 | 12 |
| M.2 slots | 0 | 0 |
| Network | 4 x 1GbE RJ-45 | 4x 1GbE RJ-45 |
| 10GbE | no | no |
| Max raw capacity | 168TB with RX1214/RX1214RP | 168TB with RX1214/RX1214RP |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rackmount |
| Released | 2015 | 2016 |
| Power consumption | — | — |
| DSM at launch | — | — |
They’re the same in core hardware: both use an Intel Atom C2538, support up to 6 GB RAM, have 12 bays, and no built-in 10GbE or M.2. The decisive difference is the RP+ has dual redundant power supplies, while the + has a single PSU. For a home/SMB buyer, pick the RS2416+ unless you specifically want power redundancy.