PowerEdge R840
Four-socket 2U for dense analytics, in-memory databases and GPU-assisted workloads.
The PowerEdge R840 is a previous-generation model, still supported and widely deployed. Four-socket 2U for dense analytics, in-memory databases and GPU-assisted workloads.
Platform facts
| Vendor | Dell |
|---|---|
| Generation | 14G |
| Form factor | 2U rack |
| Sockets | 4 |
| CPU | 1st/2nd Gen Intel Xeon Scalable (Skylake-SP / Cascade Lake-SP) |
| DIMM slots | 48 |
| Memory | DDR4 RDIMM/LRDIMM, up to 6 TB; Optane PMem 100 on 2nd Gen |
| Storage | 24x 2.5-inch (up to 24 NVMe); BOSS-S1 boot |
| RAID | PERC H730P, H740P; HBA330; BOSS-S1 |
| Management | iDRAC9 |
| Released | 2018 |
| Status | previous |
Field notes
Four sockets in 2U run hot; keep to the recommended ambient and all blanks fitted. Memory population rules are strict across four CPUs; mixed kits cause slow POST. Supports two double-wide GPUs. Windows Server 2022 / ESXi 8.0 supported. Replace with an R860.
Successor: PowerEdge R860.
What we do with the PowerEdge R840
- Specification and procurement of new PowerEdge servers, configured to order
- Rack, rail and cable installation, iDRAC setup and firmware baseline
- Memory, NVMe, PERC and NIC upgrades with qualified parts
- Out-of-warranty repair: PSU, fan, backplane, PERC battery and motherboard replacement
- OS and hypervisor installs: Windows Server, VMware, Proxmox, RHEL, Ubuntu
- ProSupport case handling and lifecycle refresh planning
Related models
Related services
Frequently asked questions
Do you work on PowerEdge servers you did not sell?
Yes. Most of our Dell work is on servers a business already owns, in or out of warranty.
Can you update firmware without downtime?
iDRAC and some component firmware update live. BIOS, PERC and NIC firmware need a reboot, which we schedule in a maintenance window.
Can the PowerEdge R840 run a current operating system?
Check the field notes above. As a rule, current models are certified for Windows Server 2022/2025, ESXi 8 and RHEL 9; legacy models usually stop at Windows Server 2019 or ESXi 7 and may need Proxmox or an older Linux to stay useful.
Need a hand with this?
Tell us what you are running and what is slowing you down. You get a straight assessment and a plan, with no obligation. Support desk is staffed 24/7.