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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 16GB DDR4 2133MHz ECC RDIMM 2Rx4 for HP 726719-B21 752369-561 Server Memory

SKU CH-5ZB5-ZSSG1

16GB DDR4 2133MHz ECC registered DIMM with 2Rx4 organisation for compatible HP servers

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC RDIMM protects server data integrity with error-correcting registered design
  • 16GB DDR4 2133MHz module delivers high-capacity registered memory for demanding workloads
  • CL15 latency at 1.2V optimises responsive performance within standard DDR4 voltage
  • 2Rx4 dual-rank architecture increases memory density for server efficiency
  • Compatible replacement for HP part numbers including 726719-B21 and 752369-561

16GB DDR4 2133 ECC RDIMM for HP Servers

This 16GB registered DIMM runs at 2133MHz with CL15 latency and 1.20V operation. It uses a 2Rx4 organisation and major-brand chips to deliver error-correcting memory for compatible HP server and workstation platforms. The module fits 288-pin DDR4 slots and replaces numerous HP part numbers including 726719-B21 and 752369-561.

Single-module upgrade with lifetime support

The package contains one 16GB stick, so capacity scales by populating additional slots on the motherboard. Every module undergoes quality-assurance testing before shipment and is backed by a lifetime warranty with US-based technical support available before and after purchase.

Verify DDR4 RDIMM support and slot population rules

Confirm that your system accepts DDR4 registered ECC DIMMs at 2133MHz and check the maximum per-slot capacity allowed by the platform. Registered modules cannot be mixed with unbuffered memory, and some HP servers require specific population sequences across channels. Buyers needing non-ECC or unbuffered memory should look elsewhere.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $54.99
Cheaper than about 83% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $3.44 per GB
Cheaper than about 86% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity16 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.2 V

Questions about this item

Will the registered ECC design require any periodic maintenance or component replacement?

No, the module has no moving parts or serviceable components and is designed to run for the life of the server without maintenance.

What electrical limit is reached first when the DIMM runs continuously at full load?

The 1.20 V supply rail sets the power ceiling; the module draws only what the DDR4 2133 specification allows at that voltage.

How much heat and noise does a single 16 GB stick add when the server runs all day?

It produces only modest heat thanks to the low 1.2 V DDR4 standard and adds no audible noise because it has no fan or moving parts.

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