Technical specifications
Dell PowerEdge R840 — Full Technical Specifications
The R840 is a four-socket server in a chassis only as tall as an ordinary two-socket machine — Dell's answer for estates that wanted four sockets without giving up a third of a cabinet per server. It goes to database consolidation and to in-memory workloads where the memory count is the requirement.
It is sold here as a new build, and refurbished units appear as four-socket estates consolidate further.
Official datasheet
Original spec sheet © Vendor. Hosted by hardwaresys for buyer reference. Specifications subject to vendor’s published documentation.
Full Specifications
Four sockets in this height has consequences, and the table names them. Start with the supply row, which runs to very high ratings: four processors and a full memory complement in a shallow chassis draw more than most cabinets allocate per position. Then the memory row, which is the reason to buy the machine at all — the slot count is the product, and a half-populated one has spent money on the wrong thing. The bay row is small for the chassis because storage is expected to be elsewhere, and the external controller listed below it is the intended route. Depth and weight both exceed the ordinary and belong in the site check.
| CPU Sockets | 4 sockets (Intel Xeon Scalable, up to 28 cores/socket) |
| CPU Family | Intel Xeon Scalable (Skylake-SP/Cascade Lake) |
| Max RAM | up to 6TB (48 DIMM DDR4, up to 2933 MT/s) |
| DIMM Slots | 48 DDR4 slots |
| Drive Bays | Up to 24x 2.5" SAS/SATA/NVMe; or 6x 3.5" |
| Storage Controller | PERC H330, H730P, H740P; S140 SW RAID; HBA330 |
| Network | 4x 1GbE LOM; optional 10GbE/25GbE |
| PSU | 750W/1100W/1600W/2000W/2400W Platinum/Titanium |
| Form Factor | 2U |
| Management | iDRAC9 with Lifecycle Controller |
| Dimensions | 86.8 x 448 x 795 mm, ~35 kg |
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