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PowerEdge R660xs Rack Server

Starting at £3,699.60 £3,699.60

The perfect blend of performance and density

Run the most popular IT applications easily with this air-cooled server that is the best choice for balanced and dense compute.

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Up to two 4th Generation Intel® Xeon® Scalable processor with up to 32 cores per processor

Operating System

Microsoft® Windows Server® with Hyper-V
RedHat® Enterprise Linux
SUSE® Linux Enterprise Server
VMware® vSAN/ESXi®
Canonical® Ubuntu® Server LTS


Intel® C741 Chipset


DIMM Speed
Up to 4800 MT/s 

Memory Type

Memory Module Slots
16 DDR5 DIMM slots

Maximum RAM
1 TB


Front Bay
Up to 4 x 3.5-inch SAS/SATA (HDD/SSD) max 80 TB
Up to 8 x 2.5-inch SAS/SATA/NVMe (HDD/SSD) max 122.88 TB
Up to 10 x 2.5-inch SAS/SATA/NVMe (HDD/SSD) max 153.6 TB

Rear Bay
Up to 2 x 2.5-inch SAS/SATA/NVMe (HDD/SSD) max 15.2 TB

Storage Controllers

Internal Controllers
PERC H965i, PERC H755, PERC H755N, PERC H355, HBA355i
External Controllers
Software RAID
Internal Boot
Boot Optimized Storage Subsystem (BOSS-N1): HWRAID 1, 2 x M.2 NVMe SSDs (cold swap)


Cryptographically signed firmware
Data at Rest Encryption (SEDs with local or external key mgmt)
Secure Boot
Secure Erase
Secured Component Verification (Hardware integrity check)
Silicon Root of Trust
System Lockdown (requires iDRAC9 Enterprise or Datacenter)
TPM 2.0 FIPS, CC-TCG certified, TPM 2.0 China NationZ


Embedded / At-the-Server
iDRAC Direct
iDRAC RESTful API with Redfish
iDRAC Service Module 
Quick Sync 2 wireless module

CloudIQ for PowerEdge plug in
OpenManage Enterprise 
OpenManage Enterprise Integration for VMware® vCenter
OpenManage Integration for Microsoft® System Center
OpenManage Integration with Windows Admin Center
OpenManage Power Manager plugin
OpenManage Service plugin
OpenManage Update Manager plugin

OpenManage Mobile

Dell Repository Manager 
Dell System Update 
Enterprise Catalogs 
iDRAC RESTful API with Redfish 

OpenManage Integrations
BMC Truesight
Microsoft® System Center 
OpenManage Integration with ServiceNow
RedHat® Ansible® Modules
Terraform Providers
VMware® vCenter and vRealize Operations Manager

Power Supplies

Power Supplies
1800 W Titanium 200—240 VAC or 240 HVDC, hot swap redundant 
1400 W Platinum 100—240 VAC or 240 HVDC, hot swap redundant 
1100 W Titanium 100—240 VAC or 240 HVDC, hot swap redundant
1100 W LVDC -48 — (-60) VDC, hot swap redundant
800 W Platinum 100—240 VAC or 240 HVDC, hot swap redundant 
700 W Titanium 200—240 VAC or 240 HVDC, hot swap redundant
600 W Platinum 100—240 VAC or 240 HVDC, hot swap redundant

Standard (STD) fans, High performance SLVR fans or High performance GOLD fans
Up to 7 hot swappable fans


Network Options
2 x 1GbE LOM card
1 x OCP card 3.0 (optional)
Front Ports
1 x iDRAC Direct (Micro-AB USB) port
1 x USB 2.0
1 x VGA

Rear Ports
1 x Dedicated iDRAC Ethernet port 
1 x USB 2.0
1 x USB 3.0
1 x Serial (optional)
1 x VGA 

Internal Ports
1 x USB 3.0 (optional)


1 CPU Configuration: Up to 2 PCIe slots (1 x16 Gen4 + 1 x8 Gen5)
2 CPU configuration: Up to 3 PCIe Gen4 slots (1 x16 Gen4 + 2 x8 Gen4)  or up to 2 PCIe Gen5 slots (1 x16 Gen5 + 1 x8 Gen5)

1 x VGA


Optional LCD bezel or security bezel

Form Factor

1U rack server

Dimensions & Weight

42.8 mm (1.68 inches)
482 mm (18.97 inches)
712.95 mm (28.05 inches) without bezel
748.79 mm (29.85 inches) with bezel
19.45 Kg (55.33 pound)

Rack Support

ReadyRails II sliding rails with optional cable management arm (CMA) and strain relief bar (SRB) for 4-post racks
Combo (Drop-in/Slide-in) rails with optional CMA and SRB for 4-post racks
ReadyRails static rails for 4-post and 2-post 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.

Drivers, Manuals & Support

Dell Support

From drivers and manuals to diagnostic tools and replacement parts, Dell Product Support has you covered!

Intel® Xeon® Scalable Processors


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