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Half-height blade server, silver metal chassis, two 2.5-inch drive caddies visible

DELL

DELL PowerEdge M640 blade server 2× Xeon Gold 6154 3.0 GHz 18-core 512 GB DDR4 2.5" bays iDRAC9 Enterprise

SKU CH-96SW-XMPNZ

Half-height blade server with dual 18-core Xeon Gold 6154 CPUs, 512 GB DDR4 ECC memory, PERC S140 controller, two 2.5" drive bays, dual-port 10 GbE networking and iDRAC9 Enterprise management

  • TypeBlade
  • Rack HeightBlade
  • CPU TypeIntel Xeon
  • CPU Speed3.00 GHz
  • CPU SocketLGA 3647
  • Number of CPU Cores18-Core Processor

Installed Memory Size 512GB

SSD (Installed) No

  • Dual Xeon Gold 6154 processors deliver 36 cores at 3.0 GHz for heavy compute
  • 512 GB DDR4 ECC memory across 16 slots supports large virtualisation workloads
  • PERC S140 controller enables RAID 0/1/5/10 on two 2.5-inch drive bays
  • Dual-port 10 GbE Broadcom 57810S-K card provides high-speed blade networking
  • iDRAC9 Enterprise gives full remote management with automation and monitoring

Half-height blade server for dense compute

The Dell PowerEdge M640 is a half-height blade server built for high-density data centre deployments. It fits into PowerEdge MX and M1000e chassis, making it suitable for virtualisation, private cloud and high-performance computing workloads. Two Intel Xeon Gold 6154 processors deliver 18 cores each at 3.0 GHz with 3.7 GHz turbo. The system ships with 512 GB of DDR4 2666 MHz registered ECC memory across 16 slots.

Storage and network limits inside a blade

The integrated Dell PERC S140 controller supports RAID 0, 1, 5 and 10 for SATA and NVMe drives. Only two 2.5-inch drive bays are available per blade, restricting local capacity to a pair of SAS or SSDs. Network connectivity is provided by a Broadcom 57810S-K dual-port 10 Gb daughter card. The Matrox G200 GPU with 8 MB video memory handles basic console output only.

Memory ceiling decides the fit

Maximum supported memory is 2 TB of DDR4, which is four times the installed 512 GB. Buyers who need more memory headroom for large-scale virtualisation or in-memory databases must plan for additional DIMMs. The LGA 3647 socket and two-processor limit are fixed, so CPU upgrades beyond the current Xeon Scalable generation are not possible. This blade is not for workloads requiring more than two sockets or local storage beyond two drives.

Highlights

  • Dual Xeon Gold 6154 processors deliver 36 cores at 3.0 GHz for heavy compute
  • 512 GB DDR4 ECC memory across 16 slots supports large virtualisation workloads
  • PERC S140 controller enables RAID 0/1/5/10 on two 2.5-inch drive bays
  • Dual-port 10 GbE Broadcom 57810S-K card provides high-speed blade networking
  • iDRAC9 Enterprise gives full remote management with automation and monitoring

Specifications

BrandDELL
SeriesPowerEdge M640
TypeBlade
Rack HeightBlade
CPU TypeIntel Xeon
CPU Speed3.00 GHz
CPU SocketLGA 3647
Number of CPU Cores18-Core Processor
# of Processors Installed2
MAX Processors2
Installed Memory Size512GB
Memory TypeDDR4
Max Memory Capacity2TB
Number of Memory Slots16
Storage ControllerDell Perc S140 Controller
SSD (Installed)No
Raid LevelRAID 0/1/5/10
GPU TypeMatrox G200
Video Memory8MB
Ethernet ControllerDell Broadcom 57810S-K 10Gb Dual Port Blade Network Daughter Card
Management PortRJ 45
Operating SystemNo

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Should I choose the 512 GB configuration or add more DDR4 modules up to the 2 TB limit?

The server ships with 512 GB across 16 slots of DDR4 2666 MHz registered ECC. You can populate up to 16 slots total for a maximum of 2 TB if your workloads need more capacity.

How does the 3.0 GHz base and 3.7 GHz turbo on the dual 18-core Xeon Gold 6154 CPUs translate to real throughput?

Two 18-core processors give 36 cores at 3.0 GHz base clock, with turbo up to 3.7 GHz for bursty workloads, delivering high multi-thread performance for virtualization and compute tasks.

What does the Broadcom 57810S-K 10 Gb dual-port daughter card cap in practice?

The card provides two 10 Gb Ethernet ports per blade, so network throughput is limited to 10 Gb per port and depends on the chassis uplink and switch configuration.

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