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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 6142 2.6GHz 16C 512GB DDR4 8x 300GB SAS H730P

SKU CH-34PE-67VG4

A 3U rack server with four 16-core Xeon Gold 6142 processors, 512GB DDR4, eight 300GB SAS drives and a PERC H730P controller

  • TypeRack
  • Rack Height3U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.60 GHz
  • CPU SocketLGA 3647

Installed Memory Size 512GB

HDD 8 x 300GB 10K SAS

CPU Model Gold 6142

  • Four 16-core Xeon Gold 6142 CPUs deliver 64 threads at 2.6 GHz
  • 512 GB DDR4 ECC memory across 16 slots supports heavy virtualization workloads
  • PERC H730P controller enables RAID 0, 1, 5, 6, 10, 50, 60 with 2 GB cache
  • Eight 300 GB 10K SAS drives provide fast, redundant storage in 2.5-inch bays
  • Dual 1600 W platinum power supplies and iDRAC9 Enterprise ensure uptime and remote control

Quad-socket Xeon Gold 6142 server

The Dell PowerEdge R940 is a 3U rack server populated with four Intel Xeon Gold 6142 processors. Each CPU runs at 2.6 GHz with 16 cores, delivering 64 cores total for heavy multi-threaded workloads. The system ships with 512 GB of DDR4 2666 MHz registered ECC memory across 16 modules. It targets organisations running large databases, virtualisation clusters or in-memory analytics.

Upgrade from dual-socket or lower core counts

Moving to four sockets is worthwhile when a dual-socket box hits memory-channel or core-count limits that stall throughput. The R940 supports up to 6 TB of DDR4 across 48 slots, so the jump makes sense for workloads that need more memory bandwidth than two CPUs can provide. Buyers who need more storage bays than the eight 2.5-inch SAS slots provided should look elsewhere.

Sustained load behaviour with redundant 1600 W power

Dual 1600 W platinum power supplies and hot-swap redundancy keep the platform stable during continuous operation. The PERC H730P controller with 2 GB cache maintains RAID performance across the eight 300 GB 10K SAS drives under steady write streams. iDRAC 9 Enterprise enables remote monitoring and firmware updates without taking the server offline.

Highlights

  • Four 16-core Xeon Gold 6142 CPUs deliver 64 threads at 2.6 GHz
  • 512 GB DDR4 ECC memory across 16 slots supports heavy virtualization workloads
  • PERC H730P controller enables RAID 0, 1, 5, 6, 10, 50, 60 with 2 GB cache
  • Eight 300 GB 10K SAS drives provide fast, redundant storage in 2.5-inch bays
  • Dual 1600 W platinum power supplies and iDRAC9 Enterprise ensure uptime and remote control

Specifications

BrandDELL
SeriesPowerEdge R940
ModelR940
TypeRack
Rack Height3U
Redundant Hot-swap PowerYes
CPU TypeIntel Xeon
CPU Speed2.60 GHz
CPU SocketLGA 3647
Number of CPU Cores16-Core Processor
# of Processors Installed4
MAX Processors4
ChipsetIntel C620
Installed Memory Size512GB
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

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Questions about this item

What rack depth and rail type does the R940 3U server require for mounting?

The server occupies 3U of rack height and ships with Dell Ready Rails for tool-less installation in standard four-post racks.

How are the four Xeon Gold 6142 processors and 512 GB of DDR4 memory installed, and what step is commonly missed?

All four LGA 3647 sockets are populated at the factory; the 16×32 GB DDR4-2666 modules fill 16 of 48 slots, so the common omission is planning future memory upgrades across the remaining 32 slots.

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

The eight 2.5″ 300 GB 10 K SAS drives, the two 1600 W platinum power supplies, and the PERC H730P controller battery are all hot-swappable and subject to wear.

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