DDR5 RDIMM

SK hynix DDR5 RDIMM 128GB

TSV-stacked 128 GB RDIMM for maximum-capacity server memory configurations

Mass Production3DSHigh Density
SK hynix DDR5 RDIMM 128GB — RDIMM

SK hynix · RDIMM · Image: skhynix.com

128 GB DDR5 RDIMM using 3DS TSV packaging for in-memory database, virtualization, and large-model inference nodes.

Interface
DDR5
Form factor
RDIMM
Capacities
128 GB
01 — Overview

In the DRAM Modules portfolio

The 128 GB DDR5 RDIMM uses through-silicon-via (3DS) stacked packages to reach the highest capacity point in SK hynix's standard registered module line. Populating twelve channels with these modules brings a single socket to 1.5 TB and a dual-socket system to 3 TB of direct-attached DRAM.

Target workloads include SAP HANA-class in-memory databases, large-scale virtualization, and CPU-side memory for AI inference serving where model and KV-cache residency drives capacity demand. The module operates at up to 6400 MT/s at 1.1 V with full ECC support.

02 — Specifications

Verified specification

Figures as published by SK hynix. Availability and firmware options are confirmed at quotation.

InterfaceDDR5, 288-pin RDIMM
Form FactorRDIMM
Capacities128 GB
Data RateUp to 6400 MT/s
Organization2Rx4, 3DS TSV, ECC
Voltage1.1 V
DRAM TypeSK hynix DDR5, TSV-stacked
Operating Temp0°C to 85°C
03 — Related Products

Considered alongside

SK hynix · DDR5 RDIMMMass Production

SK hynix DDR5 RDIMM 96GB

96 GB DDR5 RDIMM using 24 Gb monolithic dies, raising per-socket capacity by 50% over 64 GB modules at up to 6400 MT/s.

High Density48 GB96 GB
Micron · MRDIMMSampling

Micron MRDIMM DDR5 8800

First-generation MRDIMM multiplexing two ranks to deliver 8800 MT/s to bandwidth-bound HPC and AI CPU workloads.

8800 MT/sNew32 GB64 GB96 GB128 GB