Side-by-side specifications of the Synology DS1511+ and DS1513+, from official datasheets. Differences are highlighted.
| DS1511+ | DS1513+ | |
| CPU | 1.8GHz dual-core | Intel Atom Dual Core 2.13 GHz |
| Cores / threads | 2 cores / 2 threads | 2 cores / 2 threads |
| RAM (base) | 1GB | 2 GB DDR3 |
| RAM (max) | 3GB | 4 GB |
| Drive bays | 5 | 5 |
| Expandable to | 10 (2× DX510) | 10 (2× DX513) |
| M.2 slots | 0 | 0 |
| Network | 2× Gigabit | 4× Gigabit |
| 10GbE | no | no |
| Max raw capacity | 15TB | 60 TB with 2× DX513 |
| Hot-swap | yes | yes |
| Form factor | desktop | Desktop |
| Released | 2011 | 2013 |
| Power consumption | 68 W / 30 W | 51 W / unknown |
| DSM at launch | — | — |