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Green rectangular DDR5 DIMM with black chips and gold contacts

A-Tech

A-Tech 128GB DDR5 4800 ECC RDIMM 2S2Rx4 Server Memory

SKU CH-5ZE8-P3H89

A 128 GB DDR5 registered ECC module with 4800 MT/s speed, CL40 latency and 1.1 V operation

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity handles heavy server workloads
  • DDR5 4800 MHz speed delivers high memory bandwidth
  • ECC RDIMM with registered design ensures data integrity
  • CL40 latency at 1.10 V optimises power efficiency
  • 288-pin DIMM form factor fits standard server slots

A-Tech 128GB DDR5 4800 ECC RDIMM

This A-Tech server memory module provides 128GB of DDR5 4800 capacity in a single registered DIMM. It operates at 1.1V with a CAS latency of CL40 and features ECC error correction for data integrity. The 288-pin module uses a 2S2Rx4 (4Rx4 EC8) rank configuration with 3DS/TSV stacking technology.

Suited for HP systems requiring the N20163-001

This module serves as a compatible replacement for the HP N20163-001 specification in server and workstation environments. Builders needing unbuffered UDIMM memory or platforms that do not support registered ECC RDIMMs should select a different module type. Systems limited to lower maximum module densities cannot accommodate this 128GB capacity.

Registered ECC RDIMM with 2S2Rx4 rank configuration

The registered buffer and ECC functionality require a motherboard chipset and CPU that explicitly support registered DDR5 RDIMMs. The 2S2Rx4 (4Rx4 EC8) organisation uses 3DS/TSV stacking to achieve the 128GB density within a single 288-pin DIMM slot. Verify your platform's qualified vendor list for this exact rank structure before purchase.

How it compares

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

Price $3,189.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $24.92 per GB
Pricier than about 86% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for HP
Model nameN20163-001
Total capacity128 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 EC8)
Power
Rated voltage1.1 V

Questions about this item

Will the registered ECC RDIMM design or the major-brand chipset need any scheduled replacement?

The module is a registered ECC RDIMM built with a major-brand chipset and has no moving parts, so no scheduled replacement is required.

What limit appears first when the CL40 4800 MHz module runs at full load continuously?

Sustained full-load operation will hit the DDR5 4800 MHz data-rate ceiling before any other bottleneck.

How much heat and power does the 1.1 V registered DIMM produce when running all day?

At the standard 1.1 V DDR5 voltage the 128 GB module draws minimal power and generates low heat, keeping noise negligible in a server chassis.

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