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Black 1U rack server front with ten 2.5 inch drive bays and status LEDs

DELL

DELL PowerEdge R640 40-Core Rack Server 2x Xeon Gold 6254 512GB DDR4 H730

SKU CH-BF6J-KWKPQ

A 40-core rack server with dual Xeon Gold 6254 CPUs at 3.10GHz, 512GB DDR4, H730 controller and ten 2.5-inch bays with eight NVMe slots

  • ProcessorGold 6254
  • Installed RAM512 GB
  • Processor core count18
  • Operating systemNo
  • Type of memoryDDR4
  • Processor speed3.1 GHz
  • 40 cores from dual Xeon Gold 6254 CPUs handle heavy virtualization workloads
  • 512GB DDR4 memory supports many simultaneous virtual machines and data-intensive apps
  • 10 front bays accept 2.5-inch NVMe drives for high-speed storage flexibility
  • H730 RAID controller simplifies array setup and ongoing storage management
  • 1U rackmount form factor fits dense data-center deployments

Purpose-built density

The Dell PowerEdge R640 packs 40 cores across two Xeon Gold 6254 processors running at 3.10GHz, delivering a dense 1U platform for virtualization, databases and application hosting. It targets IT teams that need high core counts and large memory capacity in a single rack unit without oversized chassis.

Build integration

Ten 2.5-inch bays with eight NVMe-capable slots let you populate fast flash or high-capacity drives while the integrated H730 controller manages RAID and monitoring. The board supports up to 3TB of DDR4, so the installed 512GB can grow as workloads expand, and the two-socket limit keeps licensing and power planning predictable.

Sustained operation

With both Gold 6254 CPUs at their 3.10GHz base clock across all 18 cores per socket, the system maintains throughput for long-running VM fleets and database jobs rather than relying on short turbo bursts. The 60-unit weight and rackmount rails are engineered for continuous duty in dense rows where thermal headroom and service access stay consistent over months.

How it compares

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

Price $2,521.99
Pricier than about 60% of the 17,641 comparable items (median $1,910.99).
Installed RAM 512 GB
Higher than about 80% of the 15,103 comparable items (median 128 GB).
Processor core count 18
Higher than about 70% of the 7,955 comparable items (median 16).

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Specifications

Product
Brand nameDELL
Product typeRackmount
Processor
ProcessorGold 6254
Processor core count18
Processor speed3.1 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM512 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Storage
Drive bays10B - 10x 2.5 in (8x NVMe Capable)
Graphics
Graphics chipIntegrated
Software
Operating systemNo
More details
Indicator lightsPower, Ethernet, USB

Questions about this item

How many physical cores does the 2-processor Xeon Gold 6254 configuration deliver for sustained compute?

Each Gold 6254 has 18 cores, so the two installed processors provide 40 cores total for continuous workloads.

What is the typical thermal and acoustic profile when the R640 runs at full load all day?

The 1U chassis uses high-speed system fans to cool the dual 3.10GHz CPUs and 512GB DDR4; expect elevated fan noise and significant heat output under sustained load.

Which storage drives must I supply myself to use the ten 2.5-inch bays?

No drives are included; you must provide 2.5-inch NVMe-capable SSDs or compatible drives for the eight NVMe bays and the two remaining bays.

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