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Dell PowerEdge R640 1U rack server, silver front with four 3.5-inch drive bays

DELL

DELL PowerEdge R640 4LFF 2x Xeon Gold 5218R 256GB RAM rack server

SKU CH-VARE-6DH0C

A 1U rack server with two 2.1 GHz Xeon Gold 5218R processors, 256GB DDR4 memory, a PERC H740P RAID controller and four 3.5-inch drive bays

  • ProcessorIntel Xeon
  • Installed RAM256 GB
  • Type of memoryDDR4
  • Processor speed2.1 GHz
  • Installed CPUs2
  • Max supported CPUs2
  • Dual Xeon Gold 5218R processors deliver 20 cores each at 2.1 GHz
  • 256 GB DDR4 ECC registered memory scales to 7.68 TB maximum capacity
  • Four 3.5-inch drive bays with PERC H740P RAID controller support flexible storage
  • Dual 10 GbE 562T network ports provide high-throughput connectivity
  • iDRAC9 Enterprise licence enables comprehensive remote management

Dual 20-core Xeon Gold 5218R server

The Dell PowerEdge R640 delivers 40 cores at 2.1 GHz and 256 GB of DDR4 ECC memory in a 1U rack chassis. It targets organisations that need dense compute for virtualisation, databases or high-performance workloads without occupying multiple rack units.

PERC H740P RAID and 10 GbE adapter

The installed PERC H740P controller manages up to four 3.5-inch SATA drives with hardware RAID, while the dual-port 562T adapter provides 10 Gb Ethernet connectivity. Both components are ready for immediate configuration, reducing deployment time for storage and network-heavy applications.

Four-bay 3.5-inch limit and fixed CPU count

Only four large-form-factor drive bays are available, capping raw capacity unless larger drives are sourced. The board accepts a maximum of two processors, so the current dual-socket configuration cannot be expanded further.

How it compares

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

Price $1,988.99
Typical for this category: the median of 17,641 items is $1,910.99.
Installed RAM 256 GB
Higher than about 60% of the 15,103 comparable items (median 128 GB).
Processor speed 2.1 GHz
Lower than about 70% of the 9,950 comparable items (median 2.3 GHz).

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Specifications

Product
Brand nameDELL
Product linePowerEdge
Model nameRack Mount
Product typeRack
Processor
ProcessorIntel Xeon
Processor speed2.1 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM256 GB
Type of memoryDDR4
Maximum RAM capacity7.68 TB
Storage
Installed storage2,00
Disk controllerDell PERC H740P Controller
Drive interfaceSATA
Graphics
Graphics chipIntegrated Graphics
Size & build
Product dimensions36 × 24 × 10 in
More details
Management controlleriDRAC9 - Enterprise License

Questions about this item

Will the 256 GB DDR4 memory need to be expanded toward the 7.68 TB maximum?

The system ships with 256 GB DDR4 and supports up to 7.68 TB using the remaining DIMM slots.

What limits sustained compute on the two Xeon Gold 5218R processors?

Each 5218R runs at 2.1 GHz with 20 cores and 27.5 MB cache; thermal design power is the first ceiling under continuous load.

How loud and hot does the R640 get with dual 750 W supplies running 24/7?

Dual 750 W units share the load; fans ramp to keep CPU temperatures in spec, producing typical rack-level noise.

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