Desktop PC upgrade guide - RAM and SSD compatibility

Dell PowerEdge R660 RAM & Storage Upgrade Guide (2026)

The Dell PowerEdge R660 (2023-2024) is a enterprise server with extensive upgrade potential. This guide covers RAM, storage, and compatibility details. For more Dell server guides, visit our Dell Servers category.


Dell PowerEdge R660 Specifications

ComponentSpecification
ProcessorDual Intel Xeon Scalable 4th/5th Gen (Sapphire Rapids/Emerald Rapids)
ChipsetIntel C741
RAM TypeDDR5-4800 ECC RDIMM
RAM Slots32 DIMM slots (16 per CPU)
Max RAM4TB (32x 128GB RDIMM)
Storage10x 2.5″ hot-swap SAS/SATA/NVMe + 2x M.2
Form Factor1U Rack
Release Year2023-2024

Dell PowerEdge R660 RAM Upgrade Guide

The Dell PowerEdge R660 supports DDR5-4800 ECC RDIMM across 32 DIMM slots (16 per CPU), for a maximum of 4TB (32x 128GB RDIMM). This system requires ECC (Error-Correcting Code) memory for data integrity in mission-critical workloads.

Compatible RAM

  • Kingston Server Premier ECC — Enterprise-grade ECC memory with proven server compatibility.
  • Samsung ECC RDIMM — OEM-quality registered ECC modules used in data centres worldwide.
  • Crucial ECC UDIMM/RDIMM — Reliable ECC memory with excellent compatibility across server platforms.

Dell PowerEdge R660 Storage Upgrade Guide

The Dell PowerEdge R660 supports 10x 2.5″ hot-swap SAS/SATA/NVMe + 2x M.2. Latest gen 1U with DDR5 and PCIe Gen5. iDRAC9 with Lifecycle Controller.

Recommended Storage

  • Samsung 990 Pro NVMe — Flagship NVMe with exceptional speed and endurance for workstation use.
  • WD Red Pro / WD Black SN850X — High-reliability drives suited for server and workstation environments.
  • Samsung 870 EVO SATA SSD — Reliable SATA SSD with excellent endurance for server boot drives.
  • Seagate IronWolf / WD Red Plus — NAS-grade HDDs rated for 24/7 operation in server environments.

Upgrade Notes

The Dell PowerEdge R660 is designed for easy serviceability. RAM and storage upgrades are tool-free or require only a standard Philips screwdriver. Always ensure the system is powered off and unplugged before performing upgrades. For ECC memory configurations, ensure all modules are matched in speed and capacity for optimal performance.


Frequently Asked Questions

What type of RAM does the Dell PowerEdge R660 use?

The Dell PowerEdge R660 uses DDR5-4800 ECC RDIMM across 32 DIMM slots (16 per CPU), supporting up to 4TB (32x 128GB RDIMM).

Can I mix RAM sizes in the Dell PowerEdge R660?

While technically possible, mixing RAM sizes is not recommended for servers. Use matched pairs or sets for optimal performance and stability.

What storage options does the Dell PowerEdge R660 support?

The Dell PowerEdge R660 supports 10x 2.5″ hot-swap SAS/SATA/NVMe + 2x M.2.

Is ECC RAM required for the Dell PowerEdge R660?

Yes, the Dell PowerEdge R660 requires ECC memory for reliable operation. Non-ECC modules will not be recognised.


Recommended Products

All links go to Amazon UK where you can check current prices and availability.

ProductWhy We Recommend ItAmazon UK
Kingston Server Premier ECCEnterprise-grade ECC memory.View on Amazon UK
Samsung ECC RDIMMOEM-quality registered modules.View on Amazon UK
Crucial ECC MemoryReliable ECC with wide compatibility.View on Amazon UK
Samsung 990 Pro NVMeFlagship NVMe for workstation use.View on Amazon UK
Samsung 870 EVO SATA SSDReliable SATA SSD for boot drives.View on Amazon UK

Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.

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