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Dell PowerEdge R940 3U rack server front view with bezel and drive bays

DELL

DELL PowerEdge R940 3U Rack Server 4x Xeon Gold 5118 2.3GHz 12-Core 256GB DDR4 2x 800GB SSD

SKU CH-CT46-DB4FZ

A 3U rack server with four 12-core Xeon processors at 2.3 GHz, 256 GB DDR4 ECC memory, PERC H730P RAID controller and two 800 GB SATA SSDs

  • TypeRack
  • Rack Height3U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.30 GHz
  • CPU SocketLGA 3647

Installed Memory Size 256GB

HDD None

  • 2 x 300GB 10K SAS
  • 8 x 1.2TB 10K SAS
  • 8 x 2.4TB 10K SAS
  • 8 x 300GB 10K SAS
  • 8 x 600GB 10K SAS
  • None

CPU Model Gold 5118

Struck-through versions exist but are not stocked here.

  • Four 12-core Xeon Gold 5118 CPUs deliver 48 threads at 2.3 GHz base with 3.2 GHz turbo
  • 256 GB DDR4 registered ECC memory across 48 slots supports up to 6 TB capacity
  • PERC H730P 2 GB controller enables RAID 0/1/5/6/10/50/60 plus pass-through for flexible storage
  • Dual 800 GB SATA SSDs provide fast read/write performance for critical workloads
  • iDRAC9 Enterprise plus quad-port 1/10 GbE networking ensures remote management and high-speed connectivity

4-Socket Xeon Server for Mission-Critical Workloads

The Dell PowerEdge R940 is a 3U rack server built for organisations that need dense, four-socket compute in a compact form factor. It ships with four Intel Xeon Gold 5118 processors, each running at 2.3 GHz with 12 cores and a 3.2 GHz turbo frequency. The system includes 256 GB of DDR4 2400 MHz registered ECC memory across 48 slots and two 800 GB SATA SSDs managed by a PERC H730P controller. Dual 1600 W platinum power supplies and iDRAC 9 Enterprise provide redundancy and remote management.

Upgrading from Dual-Socket or Lower-Core Platforms

Moving from a two-socket server or a four-socket system with fewer cores per CPU yields a significant jump in parallel throughput for virtualisation, in-memory databases and high-performance computing. The step is worth it when your workloads saturate the CPU or memory bandwidth of a smaller chassis and you need the 6 TB maximum memory ceiling without moving to a larger rack footprint. The PERC H730P supports RAID 0, 1, 5, 6, 10, 50 and 60 for flexible storage resilience.

Verify Rack Space, Power and Network Requirements

Confirm your rack can accommodate a 3U chassis with the included ready rails and front bezel. Ensure the facility provides adequate power distribution for dual 1600 W supplies and that cooling capacity matches the thermal output. The Intel X520/I350 daughter card delivers two 1 GbE and two 10 Gb SFP+ ports, so check that your top-of-rack switches have compatible SFP+ transceivers and cabling. The system uses LGA 3647 sockets and DDR4 memory only.

Highlights

  • Four 12-core Xeon Gold 5118 CPUs deliver 48 threads at 2.3 GHz base with 3.2 GHz turbo
  • 256 GB DDR4 registered ECC memory across 48 slots supports up to 6 TB capacity
  • PERC H730P 2 GB controller enables RAID 0/1/5/6/10/50/60 plus pass-through for flexible storage
  • Dual 800 GB SATA SSDs provide fast read/write performance for critical workloads
  • iDRAC9 Enterprise plus quad-port 1/10 GbE networking ensures remote management and high-speed connectivity

Specifications

BrandDELL
SeriesPowerEdge R940
ModelR940
TypeRack
Rack Height3U
Redundant Hot-swap PowerYes
CPU TypeIntel Xeon
CPU Speed2.30 GHz
CPU SocketLGA 3647
Number of CPU Cores12-Core Processor
# of Processors Installed4
MAX Processors4
ChipsetIntel C620
Installed Memory Size256GB
Memory TypeDDR4
Max Memory Capacity6TB
Number of Memory Slots48
Storage ControllerDell Perc H730P 2GB Controller
HDD InterfaceSATA
SSD (Installed)2 x 800GB SATA SSD
Raid LevelRAID 0/1/5/6/10/50/60
GPU TypeMatrox G200
Video Memory8MB
Ethernet ControllerDell Intel X520/I350 Quad Port 2x 1GbE 2x 10Gb SFP+ Network Daughter Card
LAN Ports4 x Ports
Expansion SlotsUp to 13 PCIe Gen 3 Slots, 3x PCIe x8, and 10 x PCIe 3.0 x16 slots
Management PortRJ 45
Operating SystemNo
Features8 x 2.5" SATA/SAS Hot-Plug Drive Bays

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What rack height and rail kit does the PowerEdge R940 need for a standard 3U installation?

The server is a 3U rack unit and ships with Ready Rails for mounting in a standard four-post rack.

How are the four Xeon Gold 5118 processors and the 256 GB DDR4 memory installed, and what step is often missed?

All four CPU sockets are populated at the factory; the 256 GB arrives as eight 32 GB DDR4 modules pre-installed across the 48 slots, so the common oversight is forgetting to verify the memory population order if you add more modules later.

Which components in the R940 are hot-swappable and will need replacement over time?

The two 1600 W power supplies and the eight 2.5" drive bays support hot-swap replacement; the PERC H730P controller battery and system fans are also field-replaceable.

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