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Dell PowerEdge R640 1U rack server front with ten 2.5-inch drive bays

DELL

DELL PowerEdge R640 40-Core 2x Xeon Gold 6248 256GB DDR4 10x 2.5" NVMe rack server

SKU CH-PYX3-4AFT7

A 40-core rack server with dual Xeon Gold 6248 CPUs, 256GB DDR4, and ten 2.5-inch NVMe drive bays for virtualization and database workloads

  • TypeWorkstation
  • LEDsPower, Ethernet, USB
  • CPU TypeGold 6248
  • CPU Speed2.50GHz
  • CPU SocketLGA3647
  • Number of CPU Cores8
  • 40 cores across two Xeon Gold 6248 CPUs power heavy virtualization workloads
  • 256 GB DDR4 memory runs multiple VMs and data-intensive apps smoothly
  • Ten 2.5-inch bays with eight NVMe slots let you add fast flash storage
  • Dual 25 Gbps and dual 100 Gbps networking handles high-throughput traffic
  • 1U rack-mount chassis fits standard data-centre racks for dense deployments

Purpose-built virtualization server

The Dell PowerEdge R640 is a 1U rack server designed for virtualization, databases, file storage and application hosting. Two Intel Xeon Gold 6248 processors deliver 40 total cores at 2.50 GHz. The system ships with 256 GB of DDR4 memory and supports up to 3 TB maximum capacity.

Ideal fit and limits

This server suits IT teams that need dense compute and flexible NVMe storage in a standard rack footprint. It is not for buyers who require pre-installed drives, an operating system, or a GPU accelerator. Workloads that demand more than two processor sockets or memory beyond 3 TB will need a different platform.

Deciding specification

Ten 2.5-inch drive bays with eight NVMe-capable slots define the storage ceiling. If your deployment needs more than eight high-speed NVMe devices or a larger drive count, this chassis cannot accommodate it.

Highlights

  • 40 cores across two Xeon Gold 6248 CPUs power heavy virtualization workloads
  • 256 GB DDR4 memory runs multiple VMs and data-intensive apps smoothly
  • Ten 2.5-inch bays with eight NVMe slots let you add fast flash storage
  • Dual 25 Gbps and dual 100 Gbps networking handles high-throughput traffic
  • 1U rack-mount chassis fits standard data-centre racks for dense deployments

Specifications

BrandDELL
TypeWorkstation
LEDsPower, Ethernet, USB
CPU TypeGold 6248
CPU Speed2.50GHz
CPU SocketLGA3647
Number of CPU Cores8
# of Processors Installed2
MAX Processors2
Installed Memory Size256GB
Memory TypeDDR4
Max Memory Capacity3TB
GPU TypeIntegrated
Expansion Bays10B - 10x 2.5" (8x NVMe Capable)
Operating SystemNo
Weight55

Questions about this item

How often should the fan modules in the PowerEdge R640 be inspected or replaced during continuous operation?

The chassis uses hot-plug redundant fan modules that can be swapped without downtime; Dell recommends checking fan health during routine server-room maintenance cycles.

What limits sustained compute throughput on the dual Xeon Gold 6248 CPUs in this server?

The 40 combined cores running at 2.50 GHz set the processing ceiling; memory bandwidth and the 3 TB DDR4 capacity ceiling become the next bottlenecks under heavy virtualization loads.

How much heat and noise does the R640 generate when all 10 NVMe bays and both CPUs are fully loaded?

Dual 25 Gbps and dual 100 Gbps network ports plus 10 NVMe drives add I/O heat; the redundant power supplies and fan wall keep exhaust temperatures within data-center limits, though rack airflow must handle the combined load.

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