Dell Server Memory — PowerEdge Compatible RAM

DDR4 & DDR5 ECC RDIMM modules for Dell PowerEdge servers

About Server Memory

Upgrading Dell PowerEdge server memory is the fastest way to boost virtualization density, database performance, and application responsiveness. We stock Dell-compatible DDR4 and DDR5 ECC RDIMMs for every PowerEdge generation from R630/R730 through R660/R760.

All memory modules are tested against Dell's specification requirements and ship ready for plug-and-play installation. Whether you're adding DIMMs to empty slots or upgrading to higher-capacity modules, we ensure compatibility before it ships.

Popular Dell Server Memory Configurations

R640/R740 Gen14 — DDR4-2666 or DDR4-2933 RDIMM, 24 slots, up to 1.5 TB max
R650/R750 Gen15 — DDR4-3200 RDIMM, 16-32 slots, up to 2 TB max
R660/R760 Gen16 — DDR5-4800 RDIMM, 16-32 slots, up to 4 TB max with LRDIMM

Need help with memory population rules? Dell requires balanced channel configuration for optimal performance. Contact us with your server service tag and we'll recommend the exact configuration.

Featured Server Memory Products

Browse all 2,644 Server Memory SKUs.

Frequently Asked Questions

How much RAM can a Dell PowerEdge R740 support?

The Dell PowerEdge R740 has 24 DIMM slots and supports up to 1.5 TB of DDR4 ECC memory using 64 GB LRDIMMs. The most common production configuration is 256 GB (8× 32 GB RDIMM) or 512 GB (16× 32 GB RDIMM) for virtualization workloads.

Can I use non-Dell memory in a PowerEdge server?

Yes. Dell PowerEdge servers accept any standard DDR4/DDR5 ECC RDIMM or LRDIMM that meets JEDEC specifications. Dell-branded memory is simply Samsung, SK Hynix, or Micron modules with a Dell part number. Third-party modules of the same spec work identically at significant savings.

What speed memory should I buy for my Dell server?

Match the maximum speed your processor supports. Xeon Scalable Gen2 (R640/R740) supports DDR4-2933. Gen3 supports DDR4-3200. Gen4/5 (R660/R760) supports DDR5-4800. Using faster-rated DIMMs is fine — they simply clock down to the CPU maximum. Using slower DIMMs reduces all memory to the slowest module speed.