Overview
The HPE 815100-B21 is a 32GB DDR4-2666MHz SmartMemory Registered DIMM for HPE ProLiant Gen10 servers. This module has been one of HPE’s highest-volume memory SKUs since the Gen10 platform launch, serving as the default 32GB option for DL360, DL380, and ML350 configurations. With first-generation Xeon Scalable (Skylake-SP) support, it remains widely deployed in production environments.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 815100-B21 (option) / 850881-001 (spare) |
| Capacity | 32GB |
| Type | DDR4 RDIMM (Registered) |
| Speed | 2666MHz (PC4-21300) |
| Rank | Dual Rank (2Rx4) |
| Voltage | 1.2V |
| ECC | Yes — HPE SmartMemory |
| Form Factor | 288-pin DIMM |
| Compatible Generation | HPE Gen10 |
This Part Fits These Servers
- HPE ProLiant DL360 Gen10
- HPE ProLiant DL380 Gen10
- HPE ProLiant DL580 Gen10
- HPE ProLiant ML350 Gen10
- HPE Apollo 4200 Gen10
Not sure about compatibility? ICD’s technical team verifies every order against your server’s generation and configuration before shipping.
Cross-Reference Part Numbers
- 850881-001 (spare PN)
- 840758-091 (assembly)
- M393A4K40BB2-CTD
All cross-referenced part numbers are functionally identical. ICD stocks both OEM and compatible options — specify your preference when requesting a quote.
Why Choose ICD
ICD maintains a catalog of over 100,000 enterprise server parts — one of the largest independent inventories of Dell, HPE, Lenovo, Cisco, and IBM components available. Every part ships tested, verified, and ready for production deployment. ICD sources exclusively from US and European channels with full traceability.
Whether you need a single module for a break-fix or volume quantities for a data center refresh, ICD delivers with same-day quoting and global shipping.
Get a Quote for 815100-B21
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