Side-by-side specifications of the Synology DS620slim and DS718+, from official datasheets. Differences are highlighted.
| DS620slim | DS718+ | |
| CPU | Intel Celeron J3355 | Intel Celeron J3455 |
| Cores / threads | 2/2 | 4-core |
| RAM (base) | 2 GB | 2 GB |
| RAM (max) | 6 GB | 6 GB |
| Drive bays | 6 | 2 |
| Expandable to | 0 | 7 |
| M.2 slots | 0 | 0 |
| Network | 2x 1GbE | 2x 1GbE |
| 10GbE | no | no |
| Max raw capacity | 108 TB | 20 TB |
| Hot-swap | yes | yes |
| Form factor | mini 6-bay NAS | desktop |
| Released | 2018 | 2017 |