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

DELL

DELL PowerEdge R640 40-Core NVMe Rack Server 2x Xeon Gold 6138 512GB DDR4 H730

SKU CH-N6PF-3GWE4

40-core rack server with dual Xeon Gold 6138 CPUs, 512GB DDR4, and ten 2.5-inch bays including eight NVMe slots plus H730 controller

  • ProcessorGold 6138
  • Installed RAM512 GB
  • Processor core count18
  • Operating systemNo
  • Type of memoryDDR4
  • Processor socketLGA3647
  • 40 cores from dual Xeon Gold 6138 CPUs handle heavy virtualization and database workloads
  • 512 GB DDR4 memory supports many virtual machines and data-intensive applications simultaneously
  • 10 drive bays with 8 NVMe-capable slots let you choose fast flash or high-capacity storage
  • H730 RAID controller simplifies array setup and ongoing storage management
  • 1U rackmount design fits dense data-centre deployments while weighing 60 kg

40-Core Rack Server for Virtualization

The Dell PowerEdge R640 is a 1U rackmount server built for business workloads such as virtualization, databases, file storage and application hosting. Two Intel Xeon Gold 6138 processors deliver 40 total cores at 2.00GHz for dependable multi-threaded performance. It targets IT teams needing dense compute in a standard rack form factor. Buyers who require GPU acceleration or workstation-class single-thread speed should look elsewhere.

H730 Controller and NVMe Bays

An integrated H730 storage controller simplifies RAID setup and daily management of the internal drive array. The chassis provides ten 2.5-inch bays, eight of which are NVMe capable, allowing high-speed flash configurations without extra adapters. Drives are not included, so you select capacity and endurance ratings that match your workload. Systems needing 3.5-inch drive support or external JBOD connectivity are not addressed by this configuration.

512GB DDR4 with 3TB Headroom

The server ships with 512GB of DDR4 memory installed across two processors, supporting multiple virtual machines and data-heavy applications immediately. Maximum memory capacity reaches 3TB when all DIMM slots are populated, giving ample headroom for future growth. Workloads exceeding 3TB of RAM or requiring persistent memory modules cannot be accommodated by this platform.

How it compares

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

Price $2,303.99
Pricier than about 57% 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 6138
Processor core count18
Processor socketLGA3647
Processor speed2 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

When will the H730 controller or the 10 NVMe-capable 2.5" bays need replacement?

The H730 controller and the 10 NVMe-capable 2.5" bays are built-in components with no user-replaceable schedule; plan to replace individual drives as they age and keep the controller firmware current for compatibility.

What limit appears first when the two Xeon Gold 6138 CPUs run sustained workloads across all 40 cores?

Sustained full-core load on the two Xeon Gold 6138 processors will hit the thermal design envelope first, causing the firmware to throttle clock speeds to stay within the platform power budget.

How much heat and fan noise does the R640 produce when it runs all day with all 10 NVMe bays populated?

With all 10 NVMe bays populated and both Xeon Gold 6138 CPUs active, the R640 exhausts significant heat through its rear fans, which ramp to high RPM under load, producing noticeable datacentre-level noise.

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