We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular DDR5 DIMM with black chips and gold contacts

A-Tech

A-Tech 64GB DDR5 4800 ECC RDIMM 2Rx4 for Hynix HMCG94MEBQA 109N 121N 123N Server Memory

SKU CH-BT9X-AD69V

64 GB DDR5 4800 ECC RDIMM 2Rx4 server module with CL40 latency and 1.1 V operation

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB capacity supports heavy server workloads
  • DDR5 4800 speed delivers high data throughput
  • ECC RDIMM design detects and corrects memory errors
  • 10 V operation matches DDR5 standard voltage
  • 2Rx4 registered architecture scales across multi-channel platforms

64GB DDR5 4800 ECC RDIMM 2Rx4 Server Module

This A-Tech module delivers 64GB of DDR5 4800MHz registered ECC memory for server and workstation platforms. It operates at the standard 1.10V DDR5 voltage with CL40 latency. The dual-rank 2Rx4 organisation uses a major-brand chipset and a 288-pin DIMM form factor. It is built as a compatible replacement for specific Hynix part numbers.

Suited for DDR5 RDIMM Slots Only

This memory fits systems that require registered DDR5 DIMMs with ECC support and accept a 2Rx4 configuration. It will not work in boards that take only unbuffered UDIMMs, nor in slots keyed for earlier DDR generations. Builders needing a different capacity, rank layout, or voltage should verify their platform specifications before ordering.

288-Pin DDR5 DIMM Form Factor

The module uses the 288-pin DDR5 DIMM interface, which is the single physical specification that determines whether it installs in a given server or workstation. Confirm the motherboard manual lists DDR5 RDIMM support and the correct pin count before purchase.

How it compares

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

Price $1,847.99
Pricier than about 86% 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 $28.87 per GB
Pricier than about 90% 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
Product lineCompatible Replacement for Hynix
Model nameHMCG94MEBQA, HMCG94MEBQA109N, HMCG94MEBQA121N, HMCG94MEBQA123N
Total capacity64 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4 (EC4)
Power
Rated voltage1.1 V

Questions about this item

Will the 64 GB DDR5 4800 ECC RDIMM need any firmware updates or periodic replacement in a server?

The module is a solid-state component with no moving parts and no firmware to update. Under normal server conditions it runs until a hardware fault occurs, at which point the single 64 GB stick is replaced.

What limit appears first when the Hynix-compatible 2Rx4 module runs at full load continuously?

The registered DDR5 4800 design operates at 1.10 V with CL40 latency. The first sustained-use boundary is the thermal envelope of the server chassis; the memory itself has no separate throttle point listed.

How much noise, heat or power does the 288-pin DDR5 4800 RDIMM add when the system runs all day?

The module draws power at the standard DDR5 1.10 V level and produces only the heat typical for a 64 GB registered DIMM. It adds no audible noise; cooling is handled by the server’s existing airflow.

More in ECC Server RAM

Similar items