Side-by-side specifications of the Synology RS820+ and RS822RP+, from official datasheets. Differences are highlighted.
| RS820+ | RS822RP+ | |
| CPU | Intel Atom C3538 | AMD Ryzen V1500B |
| Cores / threads | 4-core | 4/8 |
| RAM (base) | 2 GB | 2 GB |
| RAM (max) | 18 GB | 32 GB |
| Drive bays | 4 | 4 |
| Expandable to | 8 | 8 |
| M.2 slots | 0 | 0 |
| Network | 4x1GbE | 4x 1GbE |
| 10GbE | optional | optional |
| Max raw capacity | null | 108 TB |
| Hot-swap | yes | yes |
| Form factor | 1U rackmount | 1U |
| Released | 2019 | 2025 |
Choose the RS822RP+ if you want the newer Intel CPU, higher RAM ceiling, and built-in 10GbE support; it’s the stronger pick for heavier SMB use and better network headroom. Choose the RS820+ only if you’re okay with lower expansion and lower-cost older hardware; both are 4-bay units, but the RS822RP+ has the edge in upgradeability and performance. Neither model gives you M.2 slots on the base unit.