HPE
HPE 672633R-B21 16 GB DDR3 1600 MHz CL11 ECC registered DIMM
16 GB DDR3 DIMM with ECC and registered signal processing at 1600 MHz CL11
- 16 GB DDR3 capacity supports larger workloads
- 1600 MHz DDR3-1600 speed matches PC3-12800 standard
- CL11 CAS latency optimises registered timing
- ECC registered design protects data integrity
- 240-pin DIMM form factor fits compatible slots
Server memory upgrade
This HPE 672633R-B21 module adds 16 GB of DDR3 capacity to compatible ProLiant systems. It targets administrators who need to expand memory in existing DDR3 platforms without replacing the motherboard. The registered design and ECC support suit workloads that demand data integrity over raw speed. Buyers seeking consumer desktop memory or non-ECC modules should look elsewhere.
Sustained load behaviour
Registered signalling and ECC correction keep data paths stable during continuous read and write cycles. Dual-rank organisation allows the memory controller to interleave accesses across ranks, reducing bottlenecks in multi-threaded server workloads. CL11 latency at 1600 MHz delivers predictable timing for virtualisation hosts and database buffers. The module is not intended for overclocking or low-latency gaming scenarios.
Deciding specification
The 240-pin DDR3 DIMM form factor and PC3-12800 rating determine whether this part fits the target server. Only systems that accept registered ECC DDR3 at 1600 MHz can use this module. Verify the motherboard memory qualification list before purchase. No other specification overrides this compatibility requirement.
Highlights
- 16 GB DDR3 capacity supports larger workloads
- 1600 MHz DDR3-1600 speed matches PC3-12800 standard
- CL11 CAS latency optimises registered timing
- ECC registered design protects data integrity
- 240-pin DIMM form factor fits compatible slots
Specifications
| Brand | HPE |
|---|---|
| Shipping weight | 1.36 kg |
| Package size | 89 × 25 × 25 mm |
Questions about this item
How much power does the 1600 MHz CL11 registered ECC DIMM draw when the server runs continuously?
The 16 GB DDR3 module operates at the standard 1.5 V for DDR3; registered ECC buffering adds negligible overhead, so sustained power draw stays within the normal range for a dual-rank 240-pin DIMM.
What must the system already provide for the 672633R-B21 to function?
A motherboard with 240-pin DDR3 slots that support registered ECC memory and the PC3-12800 speed grade; the module will not work in unbuffered or non-ECC boards.
Will the 16 GB DDR3-1600 CL11 registered ECC DIMM run alongside existing 8 GB DDR3 modules in the same server?
Yes, provided the other modules are also registered ECC DDR3; the memory controller will operate all populated slots at the lowest common speed and latency.
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