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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 8x 800GB SSD H730P

SKU CH-QP15-JRRMH

A 1U rack server with dual 20-core Xeon Gold 6148 CPUs, 768GB DDR4 memory, eight 800GB SATA SSDs on a PERC H730P controller, and redundant 750W power supplies

  • ProcessorIntel Xeon
  • Installed RAM768 GB
  • Video RAM8 MB
  • Installed SSD8 × 800 GB SATA SSD
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual Xeon Gold 6148 CPUs deliver 40 cores at 2.4 GHz with 3.7 GHz turbo for heavy compute
  • 768 GB DDR4 2666 MHz ECC memory across 24 slots supports large in-memory workloads
  • PERC H730P 2 GB controller enables RAID 0, 1, 5, 6, 10, 50, 60 with battery-backed cache
  • Eight 800 GB SATA SSDs supply high-speed flash storage in the 8-bay 2.5-inch chassis
  • iDRAC 9 Enterprise plus quad-port 1/10 GbE card gives remote management and flexible networking

Dense dual-socket 1U server

The Dell PowerEdge R640 is a 1U rack server built for dense scale-out computing. Two Intel Xeon Gold 6148 processors deliver 40 total cores at 2.4 GHz with 3.7 GHz turbo. 768 GB of DDR4 registered ECC memory fills all 24 slots. Eight 800 GB SATA SSDs sit behind a PERC H730P controller with 2 GB cache.

Suits virtualization and database clusters.

This configuration targets hypervisor hosts, in-memory databases and high-thread-count applications that benefit from dual-socket density. The 1U chassis leaves no room for full-length accelerators, so buyers who need GPU compute or additional PCIe cards should look at larger platforms. Network connectivity is handled by an Intel X520/I350 daughter card with quad ports.

24 DIMM slots at 2666 MHz DDR4

Memory capacity maxes out at 3 TB across 24 slots running DDR4 2666 MHz registered ECC. The installed 768 GB uses every slot with 32 GB modules, so any expansion requires replacing existing DIMMs. Verify your workload fits within this ceiling before ordering.

How it compares

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

Price $5,107.99
Pricier than about 77% 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 SSD8 × 800 GB SATA SSD
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSATA
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

How can I verify the dual Xeon Gold 6148 CPUs are running at 2.4GHz with 20 cores each after installation?

Use iDRAC9 Enterprise or the system BIOS to confirm both processors show 20 cores at 2.4GHz base clock with 3.7GHz turbo capability.

What components are included and which must be purchased separately for this R640?

Included: 2x Xeon Gold 6148, 768GB DDR4 (24x 32GB), H730P controller, 8x 800GB SATA SSDs, X520/I350 quad-port NIC, iDRAC9 Enterprise, 2x 750W PSUs, rails, bezel. No additional parts required for operation.

Which memory configuration should I choose if I need to expand beyond the installed 768GB?

All 24 DDR4 slots are populated with 32GB modules. To increase capacity, replace existing modules with larger DDR4 RDIMMs up to the 3TB maximum supported by the C620 chipset.

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