HPE 128GB 2S4Rx4 DDR4-2666V-L PC4-21300 LRDIMM ECC Memory 815102-B21 840760-091 850883-001

HPE 128GB 2S4Rx4 DDR4-2666V-L PC4-21300 LRDIMM ECC Memory 815102-B21 840760-091 850883-001

The HPE 128GB DDR4-2666 LRDIMM (815102-B21) is a high-density enterprise memory module designed for HPE ProLiant Gen10 servers. Utilizing advanced 3DS (3D Stacking) technology and an Octal Rank (2S4Rx4 / 8Rx4) architecture, this module delivers exceptional capacity and performance for virtualization, in-memory databases, and large-scale enterprise workloads.

Core Specifications

• Capacity: 128GB (1 x 128GB module)
• Memory Type: DDR4 SDRAM – LRDIMM (Load-Reduced DIMM)
• Speed: 2666 MHz (DDR4-2666 / PC4-21300)
• Form Factor: 288-pin DIMM
• Rank: 2S4Rx4 (Octal Rank x4)
• Latency: CL22 (CAS 22-19-19)
• Voltage: 1.2V
• Error Correction: ECC (Error-Correcting Code)
• Technology Feature: 3DS (3D Stacked memory for ultra-high density)

Key Features

Enterprise-Class Performance:
Optimized for high-capacity, high-bandwidth workloads in mission-critical environments

Advanced Reliability:
ECC support and HPE SmartMemory validation improve system uptime and stability

High-Density Architecture:
3DS stacking enables massive memory capacity per DIMM

Optimized for Gen10 Platforms:
Designed specifically for HPE ProLiant Gen10 servers with Intel Xeon Scalable processors

Server Compatibility

This module is designed exclusively for HPE ProLiant Gen10 systems and is not compatible with desktops or laptops.

ProLiant DL Series (Rack Servers)
DL360 Gen10
DL380 Gen10
DL560 Gen10
DL580 Gen10

ProLiant ML Series (Tower Servers)
ML110 Gen10
ML350 Gen10

Blade & Synergy Systems
BL460c Gen10
Synergy 480 Gen10
Synergy 660 Gen10

Apollo / Specialized Systems
XL170r Gen10
XL190r Gen10
XL230k Gen10

Critical Installation Notes

• Memory Type Rule:
  Do NOT mix LRDIMMs with RDIMMs or UDIMMs in the same system
• Processor Dependency:
  Memory speed depends on CPU capability; slower CPUs will downclock memory
• Maximum Capacity:
  Enables up to multi-terabyte memory configurations (up to ~3TB depending on system)

Related Part Numbers

• 815102-B21 (Option Part Number)
• 840760-091 (Assembly Number)
• 850883-001 (Spare Part Number)
• 832802-B21
• 815102-K21
• 815102-H21
• M386AAK40B40-CWD6Y
• MTA144ASQ16G72LSZ-2S6G1
• HMABAGL7A4R4N-VN
• M386AAK40B40-CWD6Q

Functional Equivalent Part Numbers

• 838087-B21
• 838088-B21
• 868845-001
• 840760-191
• 838087-H21
• 838087-K21
• R2H03A

The HPE 128GB DDR4-2666 3DS LRDIMM SmartMemory module provides exceptional density, reliability, and performance, making it an ideal solution for enterprise environments requiring large memory footprints and consistent high-speed operation.