Side-by-side specifications of the Synology DS415+ and DS423, from official datasheets. Differences are highlighted.
| DS415+ | DS423 | |
| CPU | Intel Atom C2538 | Realtek RTD1619B |
| Cores / threads | 4C/4T | 4/4 |
| RAM (base) | 2 GB | 2 GB DDR4 |
| RAM (max) | 6 GB | 2 GB |
| Drive bays | 4 | 4 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 2x Gigabit | 2x 1GbE RJ-45 |
| 10GbE | no | no |
| Max raw capacity | 24 TB | 108 TB |
| Hot-swap | yes | yes |
| Form factor | desktop | Desktop |
| Released | 2014 | 2026 |