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

DELL

DELL PowerEdge R940 3U Rack Server 4x Xeon Gold 6148 2.4GHz 20-Core 128GB DDR4 8x 2.4TB SAS H730P

SKU CH-XE47-HYBG3

Four-socket 3U rack server with four 20-core Xeon Gold 6148 CPUs, 128 GB DDR4, eight 2.4 TB SAS drives and H730P controller

  • TypeRack
  • Rack Height3U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.40 GHz
  • CPU SocketLGA 3647

Installed Memory Size 128GB

HDD 8 x 2.4TB 10K SAS

CPU Model Gold 6148

Struck-through versions exist but are not stocked here.

  • Four 20-core Xeon Gold 6148 CPUs provide 2.4 GHz base frequency with 3.7 GHz turbo
  • 128 GB DDR4 registered ECC memory across eight 16 GB modules supports up to 6 TB capacity
  • PERC H730P 2 GB controller enables RAID 0, 1, 5, 6, 10, 50, 60 and pass-through
  • Eight 2.4 TB 10 K SAS drives deliver high-capacity 12 Gb/s storage in 2.5-inch bays
  • iDRAC9 Enterprise remote management with redundant 1600 W platinum power supplies and ready rails included

Four-Socket Xeon Gold Server

The Dell PowerEdge R940 is a 3U rack server built around four Intel Xeon Gold 6148 processors, each running at 2.4 GHz with 20 cores and a 3.7 GHz turbo frequency. It ships with 128 GB of DDR4 2666 MHz registered ECC memory across 48 available slots and a PERC H730P 2 GB RAID controller managing eight 2.4 TB 10K SAS drives in a 2.5-inch form factor.

Upgrade From Dual-Socket Platforms

Moving to four sockets doubles the core count and memory channels compared with typical dual-socket servers, which matters when workloads scale beyond what two processors can address. The jump is worth it for database consolidation, in-memory analytics or virtualization clusters that need the full 6 TB memory ceiling and 48 DIMM slots populated.

12 Gb/s SAS Backplane Limits

The storage controller and backplane operate at 12 Gb/s SAS, so drive throughput tops out at that link speed regardless of the drive's own rating. The eight 2.5-inch bays are filled with the supplied 2.4 TB hard disks; adding solid-state media later requires SAS or SATA models that fit the same 12 Gb/s interface.

Highlights

  • Four 20-core Xeon Gold 6148 CPUs provide 2.4 GHz base frequency with 3.7 GHz turbo
  • 128 GB DDR4 registered ECC memory across eight 16 GB modules supports up to 6 TB capacity
  • PERC H730P 2 GB controller enables RAID 0, 1, 5, 6, 10, 50, 60 and pass-through
  • Eight 2.4 TB 10 K SAS drives deliver high-capacity 12 Gb/s storage in 2.5-inch bays
  • iDRAC9 Enterprise remote management with redundant 1600 W platinum power supplies and ready rails included

Specifications

BrandDELL
SeriesPowerEdge R940
ModelR940
TypeRack
Rack Height3U
Redundant Hot-swap PowerYes
CPU TypeIntel Xeon
CPU Speed2.40 GHz
CPU SocketLGA 3647
Number of CPU Cores20-Core Processor
# of Processors Installed4
MAX Processors4
ChipsetIntel C620
Installed Memory Size128GB
Memory TypeDDR4
Max Memory Capacity6TB
Number of Memory Slots48
Storage ControllerDell Perc H730P 2GB Controller
HDD InterfaceSAS
SSD (Installed)No
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

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Questions about this item

What rack depth and rails does the 3U R940 require for mounting?

The Ready Rails included with the R940 fit standard 4-post racks; the 3U chassis needs sufficient clear depth behind the front posts for the full unit length.

How are the four Xeon Gold 6148 processors installed, and what step is often missed?

Each CPU seats in an LGA 3647 socket on the system board; the thermal paste must be applied and the carrier torqued in the prescribed sequence before memory is populated.

When will the PERC H730P RAID controller battery need replacement?

The 2 GB controller cache battery typically lasts several years; iDRAC 9 Enterprise will alert when the battery health drops below the replacement threshold.

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