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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 64GB DDR4 2933 ECC RDIMM 2Rx4 CL21 1.2V Server RAM

SKU CH-CH5Y-E2JP7

A 64GB DDR4 2933 ECC registered DIMM with CL21 latency and 1.2V operation for server memory upgrades

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 64GB capacity handles heavy server workloads
  • ECC registered design protects data integrity
  • DDR4 2933MHz speed delivers high bandwidth
  • CL21 latency at 1.2V optimises efficiency
  • 288-pin 2Rx4 module fits standard DDR4 slots

What this module is and who needs it

This 64GB DDR4 2933 ECC RDIMM is a registered server memory module built for systems that require error-correcting code and registered signal integrity. It suits administrators upgrading or repairing compatible Hynix-equipped servers and workstations where this exact specification is validated.

Who this suits and who should look elsewhere

It fits workloads demanding 64GB per DIMM slot with CL21 timing at 1.2V on a 288-pin interface. It is not for desktop or consumer motherboards that lack RDIMM support, nor for platforms limited to unbuffered UDIMM memory.

The spec that decides compatibility

The module uses a 2Rx4 rank organisation with DDR4 2933 (PC4-23400) speed and registered ECC functionality; your system must explicitly support this rank structure, voltage, and registered DIMM type for the module to operate.

How it compares

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

Price $351.99
Pricier than about 63% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $5.50 per GB
Cheaper than about 69% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Total capacity64 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.2 V

Questions about this item

Does my motherboard need 288-pin DDR4 RDIMM slots to use this 64GB module?

Yes, this is a 288-pin DDR4 RDIMM that requires registered DIMM slots on a server or workstation board.

Will this CL21 2933MHz module run at full speed if I keep slower DDR4 RDIMMs installed?

The system will clock all modules to the speed of the slowest installed kit, so this module will downclock to match slower DDR4 RDIMMs.

How can I verify the module is operating as ECC registered memory after installation?

Check the BIOS or OS memory report for 64GB capacity, 2933MHz speed, CL21 timings, 1.2V voltage, and ECC registered status.

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