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Green rectangular circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 24GB DDR5-4800 ECC RDIMM Server RAM

SKU CH-4SN3-2JKBA

24 GB DDR5-4800 ECC registered DIMM for server and workstation upgrades

  • Total capacity24 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 24 GB capacity supports larger server workloads
  • DDR5 4800 MT/s transfers data at high bandwidth
  • ECC RDIMM corrects errors for data integrity
  • Registered design reduces electrical load on the memory controller
  • 1 V operation meets DDR5 standard voltage

24GB DDR5-4800 ECC RDIMM Server Module

This 24GB registered DIMM uses DDR5 technology at 4800 speed with ECC and a CAS latency of 40. It is built for servers and workstations that require error-correcting registered memory. The module operates at the standard 1.1V voltage and uses a 288-pin form factor with a 1Rx8 rank configuration.

Replaces Hynix HMCGJ8MEBRB Modules

This module serves as a compatible replacement for Hynix part numbers HMCGJ8MEBRB and HMCGJ8MEBRB216N. The upgrade is worth it when a system needs additional registered ECC capacity or when an existing DIMM has failed. It matches the original PC5-38400 specification so the memory controller sees identical timing and voltage parameters.

Simple DIMM Slot Installation

Installation follows standard server DIMM procedures: power down, open the chassis, align the 288-pin edge connector with the keyed slot, and press firmly until the retention clips lock. Common issues include mixing registered and unbuffered DIMMs in the same channel, populating slots in the wrong sequence for the platform, or failing to seat the module fully which causes boot errors.

How it compares

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

Price $690.99
Pricier than about 75% of the 6,523 comparable items (median $188.99).
Total capacity 24 GB
Lower than about 55% of the 6,064 comparable items (median 32 GB).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $28.79 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix HMCGJ8MEBRB HMCGJ8MEBRB216N
Model nameA-Tech 24 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity24 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will the 288-pin DDR5 RDIMM fit my server motherboard slot?

This module uses the standard 288-pin DDR5 RDIMM form factor. It fits any server or workstation board with DDR5 RDIMM slots. Verify your platform supports DDR5 registered memory before purchase.

What is the correct way to seat this 1Rx8 registered module and which mistake should I avoid?

Align the notch on the module with the slot key, press straight down until both side clips click. The common error is inserting it at an angle or stopping before the clips lock fully.

Does the 24GB ECC RDIMM need any firmware updates or periodic replacement?

No firmware updates are required for the memory itself. ECC corrects single-bit errors on the fly. Replace the module only if system diagnostics report persistent correctable or uncorrectable errors.

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