Side-by-side specifications of the Synology FS2500 and FS3420, from official datasheets. Differences are highlighted.
| FS2500 | FS3420 | |
| CPU | AMD Ryzen V1780B | Intel Xeon D-1739 |
| Cores / threads | 4 cores / 8 threads | 8 cores / 16 threads |
| RAM (base) | 8 GB DDR4 ECC UDIMM | 32 GB DDR4 ECC RDIMM |
| RAM (max) | 32 GB | 192 GB |
| Drive bays | 12 | 24 × 2.5-inch SATA SSD |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 2 × 1GbE RJ-45; 2 × 10GbE RJ-45 | 2 × 10GbE RJ-45 |
| 10GbE | yes | yes |
| Max raw capacity | N/A | 1 PB |
| Hot-swap | N/A | yes |
| Form factor | 1U rackmount | 2U rackmount |
| Released | 2025 | 2026 |
| Power consumption | 74.83 W / N/A | 122.0 W / unknown |
| DSM at launch | — | — |