Side-by-side specifications of the Synology RS810+ and RS812RP+, from official datasheets. Differences are highlighted.
| RS810+ | RS812RP+ | |
| CPU | Intel Atom D510 | Intel Atom Dual Core 2.13 GHz |
| Cores / threads | 2 cores / 4 threads | 2 cores / 2 threads |
| RAM (base) | 1 GB | 1 GB DDR3 |
| RAM (max) | 3 GB | 3 GB |
| Drive bays | 4 | 4 |
| Expandable to | 4 (up to 8 with RX410) | 4 (RX410) |
| M.2 slots | 0 | 0 |
| Network | 2 x Gigabit Ethernet | 2x Gigabit |
| 10GbE | no | no |
| Max raw capacity | 12 TB | 24 TB with RX410 |
| Hot-swap | yes | yes |
| Form factor | 1U rackmount | 1U rackmount |
| Released | 2010 | — |
| Power consumption | 68 W / unknown | 46.2 W / unknown |
| DSM at launch | 2.3 | — |
Neither unit has 10GbE or M.2, and both are 4-bay rack NAS models with no native expansion. The RS812RP+ is the better buy if you want more headroom: it uses a newer/faster CPU and supports more RAM than the RS810+, while also adding redundant power supplies. If you only need basic storage and want the cheaper option, the RS810+ is sufficient.