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Silver 3U rack server with front bezel, eight 2.5-inch drive bays and redundant power supplies

DELL

DELL PowerEdge R940 3U Rack Server 4x Xeon Gold 6148 2.4GHz 20-Core 256GB DDR4 8x 600GB SAS H730P

SKU CH-QSR1-Z4M3E

A 3U rack server with four Xeon Gold 6148 20-core processors, 256 GB DDR4 ECC memory, a PERC H730P controller, and eight 600 GB SAS drives for high-density compute

  • ProcessorIntel Xeon
  • Installed RAM256 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor

Installed Memory Size 256GB

HDD 8 x 600GB 10K SAS

CPU Model Gold 6148

  • Four 20-core Xeon Gold 6148 CPUs give 3.7 GHz turbo for peak throughput
  • 256 GB DDR4 2666 MHz registered ECC memory supports large in-memory datasets
  • PERC H730P 2 GB controller enables RAID 0 1 5 6 10 50 60 with battery-backed cache
  • Eight 600 GB 10K SAS drives deliver fast 12 Gb/s storage in 2.5-inch bays
  • iDRAC 9 Enterprise plus quad-port 1 GbE and 10 Gb SFP+ networking for remote management and high-speed I/O

Mission-critical 3U server

This Dell PowerEdge R940 is a 3U rack server built for mission-critical workloads. It ships with four Intel Xeon Gold 6148 processors running at 2.4 GHz with a 3.7 GHz turbo frequency. The system includes 256 GB of DDR4 registered ECC memory across eight 32 GB modules. Dual 1600 watt redundant power supplies and iDRAC 9 Enterprise remote management are standard.

Database clusters versus smaller deployments

The four-socket design and 48 memory slots suit organisations running heavily threaded databases, virtualisation clusters or in-memory analytics. Buyers who need a lower core count or a smaller memory footprint should consider a two-socket platform. The 3U form factor also requires a compatible rack enclosure with sufficient depth and cooling capacity.

Four-socket Xeon Gold 6148 configuration

The defining specification is the quartet of Xeon Gold 6148 CPUs delivering 20 cores each at 2.4 GHz base clock. This fixed four-processor layout determines the licensing tier, thread density and memory-channel population for the workloads above.

How it compares

Measured against everything we stock in Rack & Tower Servers, at today’s prices. Recalculated every night.

Price $2,658.99
Pricier than about 61% of the 17,641 comparable items (median $1,910.99).
Installed RAM 256 GB
Higher than about 60% of the 15,103 comparable items (median 128 GB).
Video RAM 8 MB
Typical for this category: the median of 8,309 items is 0.01 GB.

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Specifications

Product
Brand nameDELL
Product linePowerEdge R940
Model nameR940
Product typeRack
Processor
ProcessorIntel Xeon
Processor core count20-Core Processor
Processor socketLGA 3647
ChipsetIntel C620
Processor speed2.4 GHz
Installed CPUs4
Max supported CPUs4
Memory
Installed RAM256 GB
Type of memoryDDR4
Maximum RAM capacity6 TB
Memory slot count48
Storage
Installed SSDNo
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSAS
Supported RAID levelsRAID 0/1/5/6/10/50/60
Graphics
Video RAM8 MB
Graphics chipMatrox G200
Connectivity
Network controllerDell Intel X520/I350 Quad Port 2x 1GbE 2x 10Gb SFP+ Network Daughter Card
Ports & slots
Network ports4 x Ports
Expansion card slotsUp to 13 PCIe Gen 3 Slots, 3x PCIe x8, and 10 x PCIe 3.0 x16 slots
Management interfaceRJ 45
Power
Hot-swap redundant PSUYes
Size & build
Rack height3U
Software
Operating systemNo

Other versions of this model

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Questions about this item

Should I pick the four-processor model or look for a two-processor version?

This unit ships with four Xeon Gold 6148 processors already installed, giving the maximum 4-socket configuration the R940 supports.

What does the 2.4 GHz clock speed deliver inside a live server?

Each 20-core Xeon runs at 2.4 GHz base and can reach 3.7 GHz turbo when thermal headroom allows.

How does the 12 Gb/s SAS controller limit real-world drive throughput?

The PERC H730P runs at 12 Gb/s per SAS lane, so the eight 10K drives share that bandwidth through the controller.

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