Especificaciones de los Synology RS815RP+ y RS820+ en paralelo, de las fichas técnicas oficiales. Las diferencias están resaltadas.
| RS815RP+ | RS820+ | |
| CPU | Intel Atom C2538 2.4GHz | Intel Atom C3538, 2.1 GHz |
| Núcleos / hilos | 4 cores / 4 threads | 4 cores / 4 threads |
| RAM (base) | 2 GB DDR3 | 2 GB DDR4 non-ECC |
| RAM (máx.) | 6 GB | 18 GB |
| Bahías | 4 | 4 |
| Ampliable a | 4 (with RX415) | 8 total with RX418 |
| Ranuras M.2 | 0 | 0 built-in; optional M2D18 via PCIe |
| Red | 4x Gigabit | 4× Gigabit Ethernet |
| 10GbE | no | optional |
| Capacidad bruta máx. | 24 TB internal; 48 TB with expansion | 56 TB raw (4×14 TB); 112 TB with RX418 |
| Intercambio en caliente | yes | yes |
| Formato | 1U rackmount | 1U rackmount |
| Lanzamiento | 2015 | 2020 |
| Consumo | — | unknown |
| DSM de lanzamiento | — | unknown |