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

DELL

DELL PowerEdge R640 1U rack server 2x Xeon Gold 6148 2.4GHz 20-core 768GB DDR4 H730P

SKU CH-11C2-GCQHR

1U rack server with dual 20-core Xeon Gold 6148 processors, 768 GB DDR4 ECC memory, PERC H730P RAID controller, eight 2.5" drive bays, quad-port 1/10 GbE networking.

  • ProcessorIntel Xeon
  • Installed RAM768 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual 20-core Xeon Gold 6148 CPUs deliver 40 threads at 2.4 GHz base with 3.7 GHz turbo
  • 768 GB DDR4 2666 MHz registered ECC memory across 24 slots supports up to 3 TB capacity
  • PERC H730P 2 GB controller enables RAID 0, 1, 5, 6, 10, 50, 60 and pass-through modes
  • Quad-port X520/I350 daughter card provides two 1 GbE and two 10 Gb SFP+ connections
  • iDRAC9 Enterprise plus dual 750 W platinum redundant supplies ensure remote management and power resilience

Dual-socket 1U compute density

The Dell PowerEdge R640 is a 1U rack server built for scale-out data centre workloads. 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 768 GB of DDR4 2666 MHz registered ECC memory across 24 DIMM slots. It is designed for organisations that need high core counts in a compact form factor.

Redundant platinum power and thermal design

Two hot-swap 750 W platinum-efficiency power supplies provide full redundancy for continuous operation. The 1U chassis uses Dell’s engineered airflow path to cool both CPUs, the PERC H730P controller and the X520/I350 network daughter card under sustained load. Fan speeds are managed by iDRAC 9 Enterprise to balance acoustic output with thermal headroom in dense rack rows.

Storage trays, networking and remote management

Eight 2.5-inch SAS/SATA drive trays are pre-installed without drives, allowing flexible capacity planning. The PERC H730P 2 GB controller supports RAID 0, 1, 5, 6, 10, 50 and 60 plus pass-through mode. A quad-port network daughter card delivers two 1 GbE and two 10 Gb SFP+ connections. iDRAC 9 Enterprise enables full out-of-band management, while ReadyRails and a front bezel are included for immediate rack mounting.

How it compares

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

Price $3,422.99
Pricier than about 69% of the 17,641 comparable items (median $1,910.99).
Installed RAM 768 GB
Higher than about 90% 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 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 RAM768 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Memory slot count24
Storage
Installed SSDNo
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSATA/SAS
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

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Questions about this item

How do I install the 2.5" drives into the 8 front bays, and what step is often missed?

Slide each drive into a tray until the latch clicks, then insert the tray until it locks; the step often missed is seating the tray fully so the backplane connector engages.

Which components will need replacement first under continuous operation?

The two 750 W platinum power supplies and the system fans are hot-swap parts designed for replacement without downtime.

What thermal or power limit appears first when both Xeon Gold 6148 CPUs run at 3.7 GHz turbo continuously?

The 750 W redundant power supplies set the ceiling; sustained all-core turbo on both 20-core processors can exceed their combined output before thermal throttling activates.

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