Ideal balance of density and scalability
Get scalable computing and storage in a 1U, 2-socket platform with an ideal mix of performance, cost and density for most data centers.

Category: Server

DELL EMC PowerEdge R640 Rack Server

Uncompromising performance and density

The PowerEdge R640 is the ideal dual-socket, 1U platform for dense scale-out data center computing. The R640 combines density, performance and scalability to optimize application performance and data center density.
Maximize application performance and density
The scalable business architecture of the R640 is designed to maximize application performance and provide the flexibility
to optimize configurations based on the application and use case. With the R640 you can create an NVMe cache pool
and use either 2.5” or 3.5” drives for data storage. Combined with up to 24 DIMM’s, 12 of which can be DCPMMs or
NVDIMMs, you have the resources to maximize application performance with the optimum configuration in only
a 1U chassis.
• Simplify deployments and speed deployments with Dell EMC ready nodes for ScaleIO and VSAN.
• Maximize storage performance with up to 10 NVMe drives or 12 2.5” drives.
• Scale compute resources with 2nd Generation Intel® Xeon® Scalable processors and tailor performance based
on your unique workload requirements.
Automate maintenance with Dell EMC OpenManage 
The Dell EMC OpenManage™ portfolio helps deliver peak efficiency for PowerEdge servers, delivering intelligent, automated management of routine tasks. Combined with unique agent-free management capabilities, the R640 is simply managed, freeing up time for high profile projects. • Simplify management with the OpenManage Enterprise™ console, with customized reporting and automatic discovery. • Take advantage of QuickSync 2 capabilities and gain access to your servers easily through your phone or tablet.
Guard your data center with built in security
Every PowerEdge server is designed as part of a cyber resilient architecture, integrating security into the full server life cycle. The R640 leverages new security features built-into every new PowerEdge server strengthening protection so you can reliably and securely deliver accurate data to your customers no matter where they are. By considering each aspect of system security, from design to retirement, Dell EMC ensures trust and delivers a worry-free, secure infrastructure without compromise. • Rely on a secure component supply chain to ensure protection from factory to the data center. • Maintain data safety with cryptographically signed firmware packages and Secure Boot. • Prevent unauthorized or malicious change with Server Lockdown. • Wipe all data from storage media including hard drives, SSDs and system memory quickly and securely with System Erase.




Tech Specs & Customization


Up to two 2nd Generation Intel® Xeon® Scalable processors with up to 28 cores per processor


Operating System

Canonical® Ubuntu® Server LTS

Citrix® Hypervisor ®

Microsoft® Windows Server® with Hyper-V

Red Hat® Enterprise Linux

SUSE® Linux Enterprise Server

VMware® ESXi®


Dimensions & Weight


42.8mm (1.69”) 



482.0mm (18.98")



808.5mm (31.8")



21.9kg (48.3 lbs.)



DIMM Speed 

Up to 2933MT/s 


Memory Type




DCPMM (Intel® Optane™ DC persistent memory)


Memory Module Slots

24 DDR4 DIMM slots (12 NVDIMM or 12 DCPMM only)

Supports registered ECC DDR4 DIMMs only


Maximum RAM





DCPMM 6.14TB (7.68TB with LRDIMM)


Embedded / At-the-Server


iDRAC RESTful API with Redfish

iDRAC Direct

Quick Sync 2 BLE/wireless module



OpenManage Enterprise

OpenManage Power Center



OpenManage Mobile 




Dell EMC Repository Manager

Dell EMC System Update

Dell EMC Server Update Utility

Dell EMC Update Catalogs

iDRAC Service Module 


OpenManage Server Administrator 

OpenManage Storage Services


OpenManage Integrations

BMC Truesight

Microsoft® System Center

RedHat® Ansible® Modules

VMware® vCenter


OpenManage Connections

IBM Tivoli® Netcool/OMNIbus

IBM Tivoli® Network Manager IP Edition

Micro Focus® Operations Manager I

Nagios® Core 

Nagios® XI



Network Options

4 x 1GbE 

2 x 10GbE + 2 x 1GbE

4 x 10GbE 

2 x 25GbE


Front Ports

1 x Dedicated iDRAC direct USB 

1 x USB 2.0

1 x USB 3.0 (optional)

1 x Video


Rear Ports

1 x Dedicated iDRAC network port

1 x Serial

2 x USB 3.0

1 x Video



Product Safety, EMC and Environmental Datasheets

Dell Regulatory Compliance Home Page

Dell and the Environment


Storage Controllers

Internal Controllers:

PERC H330, H730P, H740P, HBA330


External Controllers

12Gbps SAS HBA


Software RAID



Internal Boot

Boot Optimized Storage Subsystem (BOSS):

HWRAID 2 x M.2 SSDs 240GB, 480 GB

Internal Dual SD Module



Up to one single-width FPGA 

Up to three single-width GPU (NVIDIA T4)



Front Bays 

Up to 10 x 2.5” with up to 8 NVMe, SAS/SATA/SSD/NVMe, max 76.8TB 

Up to 10 NVMe, max 64TB 

Up to 4 x 3.5” SAS/SATA, max 56TB


Rear Bays

Up to 2 x 2.5” SAS/SATA/SSD/NVMe, max 15.36TB



Cryptographically signed firmware

Secure Boot

Secure Erase

Silicon Root of Trust 

System Lockdown (requires OpenManage Enterprise)

TPM 1.2/2.0, TCM 2.0 optional


Power Supplies

495W Platinum

750W Platinum

750W 240HVDC Platinum*

1100W 48VDC

1100W Platinum

1100W 380HVDC Platinum*

1600W Platinum

750W Titanium

Hot plug power supplies with full redundancy option

Up to 8 hot plugs fans with full redundancy




3 x Gen3 slots (all x16)


Video Card

1 x VGA



Optional LCD bezel or security bezel


Form Factor

1U Rack Server


Rack Support

ReadyRails™ sliding rails with optional cable management arm for 4-post racks (optional adapter brackets required for threaded hole racks).


Recommended Support

Choose Dell ProSupport Plus for critical systems or Dell ProSupport for premium hardware and software support for your PowerEdge solution. Consulting and deployment offerings are also available. Contact your Dell representative today for more information. Availability and terms of Dell Services vary by region.