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Silver 1U rack server front with ten 2.5-inch drive bays

DELL

DELL PowerEdge R640 40-Core Rack Server 2x Xeon Gold 6148 2.40GHz 256GB DDR4 H730P 10x 2.5

SKU CH-41S3-AQ271

A 40-core 2U rack server with dual Xeon Gold 6148 CPUs, 256GB DDR4, an H730P controller and ten 2.5-inch NVMe-capable drive bays

  • ProcessorGold 6148
  • Installed RAM256 GB
  • Processor core count18
  • Operating systemNo
  • Type of memoryDDR4
  • Processor speed2.4 GHz
  • 40 cores from dual Xeon Gold 6148 CPUs handle heavy virtualization workloads
  • 256 GB DDR4 memory supports many simultaneous virtual machines and databases
  • 10 drive bays with 8 NVMe-capable slots let you choose fast local storage
  • H730P RAID controller simplifies array setup and daily management
  • 1U rack form factor fits dense data-centre deployments

1U Rack Server with 40 Cores

The Dell PowerEdge R640 is a 1U rackmount server system powered by two Intel Xeon Gold 6148 processors. Each CPU delivers 18 cores at 2.40 GHz, giving a total of 40 cores for parallel workloads. The chassis provides ten 2.5-inch drive bays, eight of which are NVMe capable, and includes an H730P storage controller for array management.

Virtualisation and database hosts

This server suits organisations running virtualisation clusters, database engines or mixed business applications that benefit from high core counts and large memory capacity. The installed 256 GB of DDR4 RAM supports multiple virtual machines and data-intensive services. Buyers who need GPU acceleration or more than two processor sockets should consider alternative platforms.

Eight NVMe-capable 2.5-inch bays

The single specification that decides fit is the storage bay layout: ten front-accessible 2.5-inch slots with eight wired for NVMe. This density lets you build all-flash arrays or mixed media configurations without adding external enclosures. Drives are not included, so you select the exact capacity and endurance rating the workload requires.

How it compares

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

Price $1,581.99
Cheaper than about 57% of the 17,641 comparable items (median $1,910.99).
Installed RAM 256 GB
Higher than about 60% 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 6148
Processor core count18
Processor speed2.4 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM256 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

Which components inside the 10-bay chassis will need replacement after extended operation?

The H730P RAID controller battery and the redundant fan modules are the field-replaceable parts that typically wear first; drive trays and backplane connectors are rated for the server's service life.

What thermal or power ceiling limits sustained load on the dual Xeon Gold 6148 processors?

The 2-processor maximum and 3TB memory cap define the compute ceiling; each CPU runs at 2.40GHz with 18 cores, so total thread count and memory bandwidth set the practical limit.

How much heat and power does the fully loaded 640 rack unit produce during all-day operation?

With two Gold 6148 CPUs, 256GB DDR4 and ten 2.5-inch drives, the system draws significant wattage and exhausts hot air rearward; redundant fans and the H730P controller add to the thermal load.

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