Side-by-side specifications of the Synology FS3410 and FS6420, from official datasheets. Differences are highlighted.
| FS3410 | FS6420 | |
| CPU | Intel Xeon D-1541, 2.1/2.7 GHz | AMD EPYC 7303 |
| Cores / threads | 8 cores / 16 threads | 16 cores / 32 threads |
| RAM (base) | 16 GB DDR4 ECC RDIMM | 64 GB DDR4 ECC RDIMM |
| RAM (max) | 128 GB | 1024 GB |
| Drive bays | 24 | 24 |
| Expandable to | — | — |
| M.2 slots | — | — |
| Network | 4× 1GbE RJ-45, 2× 10GbE RJ-45, 1× out-of-band management | 2 × 10GbE RJ-45 |
| 10GbE | yes | yes |
| Max raw capacity | 1 PB | 1 PB |
| Hot-swap | yes | yes |
| Form factor | 2U | 2U rackmount |
| Released | — | 2026 |
| Power consumption | 113.84 W / null | 164.74 W / unknown |
| DSM at launch | — | — |