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HP Smart Kit memory offers stable registered RAM performance.
672631-B21
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HP 16GB 2RX4 PC3-12800R SMART KIT
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Name:
672631-B21
- Description:
- HP 16GB 2RX4 PC3-12800R SMART KIT
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Hp
- GTIN:
- 800265816015
- Condition:
3 Year Extended Warranty
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672631-B21 Overview
672631-B21 is a DDR4 desktop memory module in a UDIMM form factor delivering a speed of 3200 MHz with a CAS latency of CL16 and operating at 1.35V. It comes as a 16 GB dual channel kit with non-ECC and unbuffered specifications, providing reliable performance for gaming, workstation, and overclocking builds.
Engineered with an integrated heatspreader for enhanced thermal management, 672631-B21 is optimized for modern desktop environments and is fully compatible with contemporary Intel 13th Gen and AMD Ryzen 5000 platforms. The module is designed without RGB lighting to focus on stability and efficiency in high-demand scenarios, making it ideal for users seeking robust, general use and performance-driven memory solutions.
672631-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 672631-B21 for additional pricing. Browse the full Hp Memory & Ram series or explore all Hp products.
672631-B21 Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 16 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Tower Server
- 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
- Intel 13th Gen
- AMD Platform Support
- AMD Ryzen 5000
- Use Case
- Gaming
- Product Name
- 672631-B21
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.3 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 672631-B21 |  T9V39AA |  Y7B57AA |  1XD87AA |  7ZZ66AA | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 16 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| Compatible Platforms | Desktop | Desktop / Laptop / Server | Desktop | Desktop | Desktop |
| Compatible Systems | Tower Server | Workstation | Workstation | Tower Server / Workstation | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Dual Channel | Dual Channel | Dual 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 | High Reliability | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.35V | 1.2V | 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 | Yes | Yes |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | Intel 13th Gen | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | Gaming | Gaming | Gaming | Gaming | Gaming / Workstation |
| Product Name | 672631-B21 | T9V39AA 16GB DDR4 3200MHz UDIMM | Y7B57AA High Performance DDR4 Memory Module | 1XD87AA High Performance DDR4 Memory Kit | 7ZZ66AA 16GB DDR4 Dual Channel UDIMM Memory Kit |
| Height | 1.2 inches | N/A | 1.2 inches | 1.2 inches | 1.4 inches |
| Width | 5.3 inches | N/A | 5.3 inches | 5.25 inches | 5.0 inches |
| Depth | 0.5 inches | N/A | 0.5 inches | 0.5 inches | 0.5 inches |
| Weight | 0.3 lbs | N/A | 0.3 lbs | 0.15 lbs | 0.31 lbs |
Reviews & Ratings
C
Carla Jennings
4
Reliable server-grade memory with consistent uptime.
D
Dustin Harper
5
Seamless installation in our rack servers.
M
Meghan Lawson
4
Dependable ECC registered RAM for enterprise workloads.
T
Travis Monroe
5
Improved server stability immediately.
Questions & Answers
What is HP SKU 672631-B21 16GB 2Rx4 PC3-12800R Smart Kit?
The HP 672631-B21 Smart Kit is a 16GB registered DDR3 memory module (2Rx4) running at PC3-12800R (1600 MT/s) with ECC support, engineered for HP ProLiant servers to ensure reliability and performance.
What does PC3-12800R mean in this memory kit?
PC3-12800R denotes DDR3 registered memory operating at 1600 MT/s with error-correcting code (ECC) and register buffering for server-class stability.
Which HP servers are compatible with the 672631-B21 Smart Kit?
The HP 672631-B21 kit is validated for ProLiant DL, ML, and BL series Gen8, Gen9 and Gen10 servers supporting DDR3 registered DIMMs.
Does the HP 16GB 2Rx4 PC3-12800R Smart Kit support ECC?
Yes; this module includes full ECC error detection and correction to maintain data integrity in critical server environments.
What is the rank configuration of the 672631-B21 memory?
The kit is dual-rank (2Rx4), distributing memory cells across two ranks for balanced signal integrity and access efficiency.
What are the speed and latency specifications of HP 672631-B21?
This memory operates at 1600 MT/s with a CAS latency of 11 (CL11) for optimized throughput and minimal delay.
What form factor is the HP 672631-B21 Smart Kit?
It is a 240-pin registered DIMM (RDIMM) designed to fit industry-standard DDR3 server memory slots.
How does an HP Smart Kit differ from standard server RAM?
HP Smart Kits include factory-tested modules, HP firmware validation, custom labeling and HPE lifetime warranty for guaranteed compatibility and serviceability.
How do I install the HP 672631-B21 Smart Kit in my server?
Power down the server, open the chassis, align the DIMM notch with the slot, firmly press until the latches click, then reboot and verify in system BIOS.
Can I use the HP 672631-B21 Smart Kit in non-HP servers?
Not recommended; it is firmware-validated for HP ProLiant platforms and may not initialize or provide full ECC functionality in non-HP systems.
What warranty does the HP 16GB Smart Kit include?
HPE provides a limited lifetime warranty covering defects in materials and workmanship for the original server deployment.
Will installing this 16GB kit improve my server’s performance?
Yes; upgrading RAM capacity to 16GB per module and using registered ECC memory increases data bandwidth and reduces error-induced downtime.
What operating temperature range does the HP 672631-B21 support?
This module is validated to operate between 0 °C (32 °F) and 85 °C (185 °F) in standard server environments.
Can I mix the 672631-B21 Smart Kit with other memory modules?
For optimal performance and compatibility, use identical HP Smart Kits; mixing speeds, ranks or brands can degrade stability and throughput.
How can I verify that my HP memory kit is genuine?
Check the HPE part number (672631-B21), serial number, holographic HPE label and validate via HPE’s online certificate of authenticity tool.
What packaging does the HP 672631-B21 Smart Kit ship in?
Each kit ships in an anti-static bag within an HPE-branded box with installation instructions and warranty documentation.
What part number and SKU should I use to order this memory?
Order using SKU 672631-B21 (HPE Part Number 672631-B21) to ensure you receive the correct 16GB DDR3 PC3-12800R Smart Kit.