Caractéristiques des Synology DS1618+ et DS1621+ côte à côte, d'après les fiches techniques officielles. Les différences sont surlignées.
| DS1618+ | DS1621+ | |
| CPU | Intel Atom C3538 | AMD Ryzen V1500B, 2.2 GHz |
| Cœurs / threads | 4 cores / 4 threads | 4 cores / 8 threads |
| RAM (base) | 4 GB DDR4 non-ECC SODIMM | 4 GB DDR4 ECC SODIMM |
| RAM (max.) | 32 GB | 32 GB (16 GB x 2) |
| Baies | 6 | 6 |
| Extensible à | 10 (with 2× DX517) | 16 total with 2 DX517 units |
| Emplacements M.2 | 2 (via optional adapter card) | 2 x M.2 2280 NVMe |
| Réseau | 4× 1GbE RJ-45 | 4 x 1GbE RJ-45 |
| 10GbE | optional | optional |
| Capacité brute max. | 192 TB raw (with 2× DX517) | 256 TB raw with 2 DX517 units |
| Remplacement à chaud | yes | yes |
| Format | Tower | desktop |
| Sortie | 2018 | 2020 |
| Consommation | 56.86 W / 25.76 W | 51.22 W / 25.27 W |
| DSM à la sortie | — | — |
Pick the DS1621+ unless you’re getting the DS1618+ at a much better price: the 1621+ has a faster Ryzen CPU, a higher RAM ceiling (up to 32 GB vs 8 GB), and a better long-term platform. Both are 6-bay units with 2x expansion support and built-in 10GbE upgrade via PCIe, but only the DS1621+ supports M.2 NVMe SSD caching.