Side-by-side specifications of the Synology DS1512+ and DS1515+, from official datasheets. Differences are highlighted.
| DS1512+ | DS1515+ | |
| CPU | Intel Atom D2700 | Intel Atom C2538 |
| Cores / threads | 2/4 | 4/4 |
| RAM (base) | 2 GB | 2 GB |
| RAM (max) | 3 GB | 6 GB |
| Drive bays | 5 | 5 |
| Expandable to | 7 | 15 |
| M.2 slots | 0 | 0 |
| Network | 4x 1GbE | 4x GbE |
| 10GbE | no | no |
| Max raw capacity | 30 TB | 30 TB |
| Hot-swap | yes | yes |
| Form factor | Desktop | desktop |
| Released | 2012 | 2015 |