Dell PowerEdge R840 | Configure To Order | Refurbished 2U Rack Server
PowerEdge R840
Dell
Dell PowerEdge R840 - Refurbished 2U Rack Server
The Dell PowerEdge R840 is a high-density, four-socket 2U rack server designed for organisations that demand exceptional processing power and scalability in a compact footprint. Built around Intel Xeon Scalable processors, it delivers the kind of compute capacity traditionally associated with much larger platforms, making it a compelling choice for data-intensive enterprise workloads.
With support for up to four processors, substantial memory capacity, and a flexible storage configuration, the R840 is engineered to handle demanding applications without compromise. Its architecture suits environments where raw CPU throughput, large memory footprints, and fast storage access are all critical simultaneously.
The R840 fits naturally into existing Dell rack environments and integrates with OpenManage and iDRAC9 for straightforward remote management and monitoring. Its dense design means four sockets in just 2U of rack space, giving operations teams meaningful consolidation potential without sacrificing headroom for growth.
Refurbished units offer all of the platform's engineering strengths at a significantly reduced cost of entry, making enterprise-grade four-socket compute accessible to a broader range of organisations and budgets.
All configurations are available to order, allowing you to specify processors, memory, storage, and additional options to match your exact requirements.
All hard drives are tested to 100% health · All SSDs are tested to 90-100% health
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Contact Us About StockAbout the Dell PowerEdge R840
The Dell PowerEdge R840 is a four-socket 2U rack server that brings exceptional compute density to demanding enterprise environments. With support for multiple Intel Xeon Scalable processors, high memory capacity, and flexible storage configurations, it is purpose-built for workloads that require sustained, parallel processing power — from large-scale virtualisation and database hosting to analytics and high-performance computing.
Where the R840 distinguishes itself is in its ability to consolidate what would traditionally require a much larger chassis into a space-efficient 2U profile. This makes it a strong fit for organisations looking to maximise compute per rack unit without stepping up to a multi-node or blade architecture. iDRAC9 comes standard, providing comprehensive remote management and simplifying ongoing operations in data centre and co-location environments.
Purchasing a refurbished PowerEdge R840 from Compuwyze gives you access to genuine enterprise-class four-socket performance at a fraction of new pricing. Each unit is thoroughly tested and comes with a warranty, and because every system is configured to order, you specify the processors, memory, storage, and options that suit your environment — rather than settling for a generic build.
Typical Use Cases
- Virtualisation hosts running VMware ESXi or Proxmox with high vCPU density requirements
- Large-scale SQL Server or Oracle database deployments requiring significant memory capacity
- SAP HANA and other in-memory analytics platforms benefiting from large aggregate RAM
- High-core-count HPC workloads in research, simulation, or financial modelling
- Consolidated application servers hosting multiple enterprise workloads across four NUMA domains
- Managed service provider infrastructure requiring dense, reliable multi-tenant compute
- VDI environments where per-socket core density directly improves desktop consolidation ratios
- Enterprise private cloud nodes in OpenStack or VMware Cloud Foundation deployments
Frequently Asked Questions
- How many processors can the Dell PowerEdge R840 support?
- The PowerEdge R840 supports up to four Intel Xeon Scalable processors, making it one of the few four-socket platforms available in a 2U form factor. This gives it a significant advantage in aggregate core count and memory bandwidth over standard two-socket servers, and makes it well suited to workloads that need sustained parallel compute across a large number of cores.
- What memory capacity is available on the R840?
- The R840 supports a large number of DIMM slots spread across its four processor sockets, allowing for substantial total memory capacity. The exact maximum depends on the specific processor configuration and DIMM type selected. If you have a specific memory target in mind, our team can advise on the best configuration for your workload — just get in touch before or during the ordering process.
- What storage options does the R840 support?
- The R840 can be configured with SFF or LFF drive bays and supports SAS, SATA, and NVMe storage media depending on the backplane and controller selected. Dell PERC RAID controllers provide hardware RAID support across a range of RAID levels, from RAID 0 and 1 through to RAID 5, 6, and 10, allowing you to balance performance against redundancy based on your requirements.
- Does the R840 support virtualisation?
- Yes. The R840 is fully compatible with VMware ESXi, Microsoft Hyper-V, Proxmox, and other enterprise hypervisors. With up to four Intel Xeon Scalable processors, the platform offers very high vCPU density, and the large memory capacity supports substantial numbers of VMs per host. It is a well-proven platform for consolidating virtualised workloads in enterprise and service provider environments.
- What warranty comes with a refurbished PowerEdge R840 from Compuwyze?
- All refurbished servers sold by Compuwyze include a warranty as standard. The specific terms are provided at the time of purchase. Our hardware undergoes thorough testing and inspection before despatch, so you can deploy knowing the system has been verified to be in sound working condition. If you have specific warranty requirements, please speak to our team.
- How does the configuration process work?
- The R840 is available as a configurable product, meaning you choose the specifications — processors, memory, storage drives, RAID controller, and any additional options — to build a system that matches your workload. Once you have submitted your configuration, our team will prepare and test the system before shipping it to you. If you are unsure which options to select, we are happy to provide guidance based on your use case and budget.
Key Specifications
| Processor | |
|---|---|
| Processor Family | 2nd Generation Intel® Xeon® Scalable |
| Processor Count | Up to four |
| Cores Per Processor | Up to 28 cores each |
| Memory | |
| Memory Type | DDR4 RDIMM / LRDIMM |
| Memory Speed | Up to 2933MT/s |
| RAM Slots | 48 DDR4 DIMM slots |
| Maximum Capacity | 6TB max (15.36TB max with PMem and LRDIMM) |
| Maximum Memory | Up to 24 Intel® Optane™ DC persistent memory PMem, max 12.28TB, (15.36TB max with PMem and LRDIMM) |
| Storage | |
| Drive Bays 2.5 inch | Up to 8 x 2.5" SAS SATA (HDDs/SSDs), or up to 24 x 2.5" SAS/SATA (HDDs/SSDs) with up to 12 NVMe PCIe SSDs, or up to 24 NVMe PCIe SSDs |
| Rear Drive Bays | Up to 2 x 2.5" SAS/SATA (HDDs/SSDs), max 15.36TB |
| Drive Bays 3.5 inch Max Capacity | 184.32TB |
| Storage Controllers | |
| Internal controllers | PERC H330, H730P, H740P, HBA330 |
| External Controller | H840, 12 Gbps SAS HBA |
| Software RAID | S140 |
| Boot Storage Option | Boot Optimized Storage Subsystem (BOSS): HWRAID 2 x M.2 SSDs 240GB, 480GB |
| SD Module | Internal Dual SD Module |
| Power | |
| Power Supply Options | Gold: 1100W - 48VDC, Platinum: 750W, 750W 240VDC, 1100W, 1100W 240VDC, 1600W, 2000W, 2400W; Titanium: 750W; Hot plug power supplies with full redundancy option |
| Chassis | |
| Form Factor | Rack (2U) |
| Chassis Width | 434.0mm (17.08") |
| Chassis Depth (2.5 inch HDD) | 835.9mm (32.9") |
| Chassis Weight | 36.6kg (80.7lbs.) |
| Expansion Slots | |
| PCIe Configuration | Up to 6 x Gen3 slots, (4x16 slots or 2x16 + 4x8 slots) |
| I/O Ports | |
| Front USB Ports | 1 x USB 2.0, Optional 1 x USB 3.0 only offered on the 8-drive configuration |
| Rear Ports | 1 x Serial, 2 x USB 3.0, 1 x VGA |
| Networking | |
| Network Interface | 4 x 1GbE, 4 x 10GbE, 2 x 10GbE+2 x 1GbE, or 2 x 25GbE |
| Management | |
| Embedded Management | iDRAC9, iDRAC Direct, Quick Sync 2 BLE/wireless |
| Security | |
| TPM | TPM 1.2/2.0, TCM 2.0 optional |
| Security Features | Cryptographically signed firmware, Secure Boot, System Lockdown (requires iDRAC Enterprise and Datacenter), Silicon Root of Trust, Secure Erase |