Side-by-side specifications of the Synology RS3412xs and SA3400D, from official datasheets. Differences are highlighted.
| RS3412xs | SA3400D | |
| CPU | Intel Core i3 Dual Core 3.1GHz | Intel Xeon D-1541 |
| Cores / threads | 2 cores / 4 threads | 8 cores / 16 threads |
| RAM (base) | 2GB ECC | 8 GB DDR4 ECC UDIMM per controller |
| RAM (max) | 6GB ECC | 64 GB per controller |
| Drive bays | 10 | 12 |
| Expandable to | 24 | 36 total with 2× RXD1219sas |
| M.2 slots | 0 | 0 |
| Network | 4x Gigabit | 2× 1GbE + 1× 10GbE per controller |
| 10GbE | optional | yes |
| Max raw capacity | 100TB | 192 TB raw; 576 TB expanded |
| Hot-swap | yes | yes |
| Form factor | 2U rackmount | 2U rackmount |
| Released | 2012 | 2025 |
| Power consumption | — | 257.78 W / unknown |
| DSM at launch | — | — |