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Trevor Simmons
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Consistent DDR4 performance for servers.
726719-B21
HP 16GB 2RX4 PC4-2133P-R DIMM SPARE 774172-001
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Name:
726719-B21
- Description:
- HP 16GB 2RX4 PC4-2133P-R DIMM SPARE 774172-001
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Hpe
- Condition:
- Warranty:
- 3
- List Price:
$1,278.72
- Price:
$216.0083.1% off
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1
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726719-B21 Overview
726719-B21 is a high performance DDR4 DIMM designed to deliver reliable operation at 3200 MHz with a low CL16 latency while operating at 1.35V. This module comes as part of a 16 GB kit arranged in a Dual Channel configuration, offering optimized performance for desktop and workstation builds.
726719-B21 is a non‐ECC, unbuffered memory module engineered with an integrated heatspreader for superior thermal management. With its streamlined design and absence of RGB lighting, it is ideally suited for gaming and workstation systems where balanced performance and stability are paramount.
726719-B21 price is $216.00, a 83.1% saving from the Hpe list price of $1,278.72. 726719-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 726719-B21 for additional pricing. Browse the full Hpe Memory & Ram series or explore all Hpe products.
726719-B21 Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 16 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Dual Channel
- Speed
- 3200 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.35V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- N/A
- AMD Platform Support
- N/A
- Use Case
- Gaming / Workstation
- Product Name
- 726719-B21 Memory Module
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.25 lbs
726719-B21 Use Case
Enterprise Virtualization Host Memory Expansion
In a mid-size enterprise data center running HP ProLiant DL380 Gen9 servers, IT administrators install the 726719-B21-HP 16GB 2RX4 PC4-2133P-R DIMM SPARE 774172-001 modules to scale host memory from 128GB to 256GB. This upgrade supports 20 additional VMware vSphere virtual machines with consistent performance. Benefit: Increases virtualization density by 40%, reduces memory contention and lowers cost per VM.
High-Performance SQL In-Memory Analytics
A financial services firm powering Microsoft SQL Server on HP ProLiant DL360 Gen10 adds 726719-B21-HP 16GB 2RX4 PC4-2133P-R DIMM SPARE 774172-001 modules to expand system memory to 192GB. This configuration delivers 30% faster query response times for real-time risk analysis and reporting. Benefit: Accelerates in-memory analytics workflows and drives faster, data-driven decisions.
HPC Cluster Compute Acceleration
A research institution upgrades its HPC cluster nodes with 726719-B21-HP 16GB 2RX4 PC4-2133P-R DIMM SPARE 774172-001 to boost DDR4 memory capacity—enabling larger simulation datasets and parallel processing. Results show a 15% reduction in scientific computing runtimes and higher job throughput. Benefit: Shortens project timelines and maximizes resource utilization.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 726719-B21 |  862974-B21 |  838081-B21 |  728629-B21 |  P00924-B21 | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 16 GB | 16 GB | 8 GB | 16 GB | 16 GB |
| Compatible Platforms | Desktop | Desktop / Laptop / Server | Desktop | Desktop | Desktop |
| Compatible Systems | Workstation | Workstation | N/A | N/A | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Dual Channel | Dual Channel | Single Channel | Dual Channel | Dual Channel |
| Speed | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.35V | 1.35V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | N/A | Intel 12th Gen | Intel 10th Gen | Intel 12th Gen | Intel 12th Gen |
| AMD Platform Support | N/A | AMD Ryzen 5000 | AMD Ryzen 3000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | Gaming / Workstation | Gaming | Gaming | Gaming | Gaming / Workstation |
| Product Name | 726719-B21 Memory Module | 862974-B21 Memory Module | 838081-B21 DDR4 8GB UDIMM 3200MHz CL16 Memory Module | 728629-B21 DDR4 High Performance Memory | P00924-B21 High Performance DDR4 Memory Kit |
| Height | 1.2 inches | 1.2 inches | 1.2 inches | 1.5 inches | 1.2 inches |
| Width | 5.3 inches | 5.3 inches | 5.3 inches | 5.3 inches | 5.3 inches |
| Depth | 0.5 inches | 0.4 inches | 0.5 inches | 0.5 inches | 1.2 inches |
| Weight | 0.25 lbs | 0.26 lbs | 0.3 lbs | 0.3 lbs | 0.3 lbs |
Reviews & Ratings
A
Amna Yousuf
4
Easy installation and stable operation.
V
Viktor Horvat
5
Reliable memory kit.
S
Shahid Iqbal
3
No downtime issues.
G
Grace Lin
4
Meets requirements.
Questions & Answers
What is the HP 726719-B21 16GB 2Rx4 PC4-2133P-R DIMM spare 774172-001?
The HP 726719-B21 is a 16GB DDR4 ECC Registered server memory module (PC4-2133P-R, 2133MT/s) designed for HP ProLiant and BladeSystem servers.
Which HP servers are compatible with the 726719-B21 16GB DIMM?
This module is validated for HP ProLiant Gen9/Gen10 servers, including DL, ML, and BL families, and select HP BladeSystem c-Class servers.
What does PC4-2133P-R mean for this memory module?
PC4-2133P-R indicates DDR4 memory rated at 2133MT/s (PC4), SPD programmed for 2133MHz (P), and registered ECC (R) for server reliability.
What does 2Rx4 signify on the HP 16GB DIMM?
2Rx4 means the module uses two ranks of x4-bit DRAM chips, providing an optimal balance of performance and capacity in server systems.