DDR5 Server Memory — Next-Gen ECC RDIMM

DDR5-4800 to DDR5-5600 ECC Registered DIMMs for latest-gen servers

About DDR5 Server Memory

DDR5 ECC memory is the new standard for the latest generation of enterprise servers, delivering up to 50% more bandwidth than DDR4 while improving power efficiency with on-die ECC and a lower 1.1V operating voltage. If you are deploying Dell PowerEdge R760/R660, HP ProLiant DL380 Gen11, or any platform with Intel Sapphire Rapids / AMD EPYC 9004 (Genoa) processors, DDR5 is your only option.

DDR5 introduces a new channel architecture — each DIMM has two independent 32-bit sub-channels instead of one 64-bit channel. This doubles the burst length and improves memory parallelism, which is particularly beneficial for multi-threaded server workloads like virtualization, in-memory databases, and AI inference.

DDR5 Server Memory Options

16 GB DDR5-4800 RDIMM (1Rx8) — entry-level for light workloads, single-rank
32 GB DDR5-4800 RDIMM (2Rx8) — mainstream choice for general-purpose servers
64 GB DDR5-4800 RDIMM (2Rx4) — high-capacity for virtualization and databases
96 GB DDR5-5600 RDIMM (2Rx4) — new high-density option, fewer DIMMs needed
128 GB DDR5-4800 RDIMM (4Rx4) — maximum density for memory-intensive workloads

DDR5 is not backward compatible with DDR4 — the keying notch position is different, and the electrical signaling is incompatible. Verify your server platform before ordering. Need help? Send us your server model and we will confirm the right DDR5 specification.

Featured DDR5 Server Memory Products

Browse all 5,207 DDR5 Server Memory SKUs.

Frequently Asked Questions

Can I use DDR5 in a server that currently has DDR4?

No. DDR5 and DDR4 are electrically and physically incompatible. The DIMM keying notch is in a different position, and DDR5 uses 1.1V versus DDR4's 1.2V. Servers are designed for one generation exclusively — you cannot mix DDR4 and DDR5 in the same system. DDR5 requires platforms like Intel 4th/5th Gen Xeon Scalable or AMD EPYC 9004.

What speed DDR5 should I buy for my server?

The effective speed depends on the CPU and the number of DIMMs per channel. Intel Sapphire Rapids supports DDR5-4800 natively (1 DPC). With 2 DIMMs per channel, speed typically drops to DDR5-4400. AMD EPYC 9004 supports DDR5-4800 at 1 DPC. Buy the rated speed of your platform — faster modules will simply clock down to the supported speed.

Is DDR5 server memory much more expensive than DDR4?

DDR5 pricing has dropped significantly since initial launch and is now within 15-25% of equivalent DDR4 capacities. A 32 GB DDR5-4800 RDIMM is typically $80-120 compared to $60-90 for a 32 GB DDR4-3200 RDIMM. The price premium is offset by higher bandwidth and improved power efficiency, especially in large-scale deployments.