726719-B21: HPE 16GB (1x16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Registered Smart Memory Kit
Also listed as: 774172-001, 752369-081, M393A2G40DB0-CPB, HMA42GR7MFR4N-TF · made by Samsung
The HPE 726719-B21 is a 16GB dual-rank DDR4-2133 ECC registered SmartMemory DIMM kit engineered for HPE ProLiant Gen9 server platforms. Delivering dependable throughput and low power draw at 1.2V, it represents one of the most widely deployed memory modules for enterprise virtualization hosts and enterprise application clusters.
Specifications
| Part number | 726719-B21 |
|---|---|
| Brand | HPE |
| Made by | Samsung |
| Type | Memory |
| Other numbers | 774172-001, 752369-081, M393A2G40DB0-CPB, HMA42GR7MFR4N-TF |
| Status | end of sale |
| Capacity | 16GB |
| Type | DDR4-2133 Registered DIMM (RDIMM) |
| Speed | 2133 MT/s (PC4-17000) |
| Voltage | 1.2V |
| Rank | Dual Rank (2Rx4) |
| Cas latency | 15-15-15 |
| Generation fit | ProLiant Gen9 servers with Intel Xeon E5-2600 v3/v4 processors |
About the 726719-B21
726719-B21 provides 16GB of dual-rank registered DDR4-2133 memory for HPE ProLiant Gen9 servers. Built with high-grade commercial DRAM chips from Samsung and Micron, it features HPE SmartMemory microcode enhancements that enable extended error reporting and predictive failure analysis within HPE Integrated Lights-Out 4 management.
Compatibility
Compatible with all HPE ProLiant Gen9 servers equipped with Intel Xeon E5-2600 v3 and v4 series processors, including DL380 Gen9, DL360 Gen9, DL160 Gen9, DL180 Gen9, DL120 Gen9, DL60 Gen9, DL80 Gen9, DL560 Gen9, DL580 Gen9, ML350 Gen9, ML110 Gen9, ML150 Gen9, Apollo 4200 Gen9, and Synergy 480 Gen9.
How to identify a genuine unit
Standard 288-pin DDR4 registered module with double-sided DRAM placement on a green PCB. Label displays option part number 726719-B21, spare part number 774172-001, and assembly part number 752369-081, accompanied by the genuine HPE holographic seal.
Buying used
Inspect module contacts for signs of scoring, corrosion, or burnt pads from previous chassis overvoltage events. Boot the server into UEFI Diagnostics to ensure the DIMM completes memory PAT tests without single-bit or multi-bit errors and validates as genuine HPE SmartMemory.
Reference prices (last 12 months, updated 2026-10-27)
Used: USD 18 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| ebay.com | used | USD 18 | Tested working HPE 16GB 2Rx4 DDR4-2133 RDIMM with genuine warranty | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
- HPE ProLiant DL380 Gen9
- HPE ProLiant DL360 Gen9
- HPE ProLiant DL160 Gen9
- HPE ProLiant DL180 Gen9
- HPE ProLiant DL120 Gen9
- HPE ProLiant DL60 Gen9
- HPE ProLiant DL80 Gen9
- HPE ProLiant DL560 Gen9
- HPE ProLiant DL580 Gen9
- HPE ProLiant ML350 Gen9
- HPE ProLiant ML110 Gen9
- HPE ProLiant ML150 Gen9
- HPE Apollo 4200 Gen9
- HPE SimpliVity 380 Gen9
- HPE Synergy 480 Gen9 Compute Module
Check compatibility with HPE
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that HPE has tested with the HPE 726719-B21.
- Compatibility HPE SPOCK (storage, SAN and host compatibility)
- Part lookup HPE PartSurfer (spare and option part numbers)
- Support HPE Support Center
Equivalent part numbers
- Samsung M393A2G40DB0-CPB Samsung 16GB 2Rx4 DDR4-2133 ECC RDIMM
- Dell A7946558 Dell 16GB 2Rx4 DDR4-2133 RDIMM
FAQ
Does 726719-B21 support 2 DIMMs per channel configurations?
Yes, dual-rank 16GB RDIMMs operate reliably in 1 DPC and 2 DPC configurations across all supported HPE ProLiant Gen9 memory slots.
What happens if installed in a server with Xeon E5-2600 v4 processors?
It will function normally, running at 2133 MT/s even though v4 processors are capable of supporting 2400 MT/s.
Buying or selling 726719-B21?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- HPE ProLiant DL380 Gen9 Server QuickSpecs - Core Options, checked 2026-10-27