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Silver 1U rack server front view with eight 2.5 inch drive bays and bezel

DELL

DELL PowerEdge R640 1U rack server 2x Xeon Gold 6148 2.4GHz 20-core 128GB DDR4 H730P 2x 300GB SAS

SKU CH-NS6D-YRHB8

A 1U dual-socket rack server with two 20-core Xeon Gold 6148 processors, 128GB DDR4, PERC H730P RAID and two 300GB SAS drives

  • ProcessorIntel Xeon
  • Installed RAM128 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual Xeon Gold 6148 CPUs deliver 40 cores at 2.4 GHz with 3.7 GHz turbo
  • 128 GB DDR4 2666 MHz registered ECC memory across 8 modules for high capacity
  • PERC H730P 2 GB controller supports RAID 0/1/5/6/10/50/60 and pass-through
  • Dual 300 GB 10K SAS drives plus 2×1 GbE and 2×10 GbE SFP+ ports
  • iDRAC9 Enterprise remote management with redundant 750 W platinum power supplies

Dual-socket 1U rack server

The Dell PowerEdge R640 is a 1U rack-mounted server designed for dense scale-out data centre deployments. It ships with two Intel Xeon Gold 6148 processors, each running at 2.4 GHz with 20 cores and a 3.7 GHz turbo frequency. The system includes 128 GB of DDR4 2666 MHz registered ECC memory across eight 16 GB modules.

SAS storage controller limits

Storage is managed by a Dell PERC H730P controller with 2 GB cache and battery backup. The controller supports SAS and SATA drives with RAID levels 0, 1, 5, 6, 10, 50 and 60 plus pass-through mode. Two 300 GB 10K SAS hard drives are installed in the eight available 2.5-inch drive bays.

Fixed dual-processor ceiling

The server accommodates a maximum of two processors, both sockets are already populated. Memory capacity can expand to 3 TB using the 24 DIMM slots, with 16 slots still free. Network connectivity provides two 1 GbE and two 10 Gb SFP+ ports via an Intel X520/I350 daughter card.

How it compares

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

Price $1,171.99
Cheaper than about 68% of the 17,641 comparable items (median $1,910.99).
Installed RAM 128 GB
Typical for this category: the median of 15,103 items is 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 R640
Model nameR640
Product typeRack
Processor
ProcessorIntel Xeon
Processor core count20-Core Processor
Processor socketLGA 3647
ChipsetIntel C620
Processor speed2.4 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM128 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Memory slot count24
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 3 PCIe Gen 3 slots all x16
Management interfaceRJ 45
Power
Hot-swap redundant PSUYes
Size & build
Rack height1U
Software
Operating systemNo

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 128 GB configuration or add more DDR4 later?

The server ships with 128 GB across 8 slots; 16 slots remain open so you can expand up to 3 TB of DDR4 2666 MHz ECC memory.

What does the 2.4 GHz Xeon Gold 6148 actually deliver under load?

Each of the two 20-core processors runs at 2.4 GHz base and can turbo to 3.7 GHz, giving 40 cores total for heavy multi-threaded workloads.

How does the PERC H730P controller limit drive performance?

The H730P provides 12 Gb/s SAS/SATA connectivity with 2 GB cache, supporting RAID 0/1/5/6/10/50/60 and pass-through for the 2.5-inch bays.

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