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Green circuit board with black memory chips, no heat spreader, gold edge connectors, single 288-pin DDR5 RDIMM module

A-Tech

A-Tech 64GB DDR5 4800 ECC RDIMM 2Rx4 EC8 Server RAM

SKU CH-XHA3-GVYY8

64GB DDR5 4800 ECC RDIMM module with 2Rx4 rank and 1.10V operation for server upgrades

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64GB capacity lets servers handle heavier workloads
  • DDR5 4800MHz speed moves data faster through registered channels
  • ECC RDIMM design detects and corrects single-bit errors
  • 2Rx4 dual-rank layout increases memory density per slot
  • 1V standard voltage reduces power draw per module

Capacity and purpose

This A-Tech module provides 64GB of DDR5 server memory in a single 288-pin RDIMM. It is built for administrators upgrading IBM-Lenovo platforms that require registered ECC DIMMs. The 2Rx4 organisation and major-brand DRAM ICs target workloads that demand data integrity and high density.

Build integration

The stick operates at the standard DDR5 voltage of 1.10V and fits any slot wired for PC5-38400 registered memory. Because it is a registered DIMM, the memory controller must support buffered modules; unbuffered consumer boards will not accept it. No heat spreader is fitted, so airflow in the chassis handles cooling directly.

Sustained operation

Rated at 4800 MT/s with a CAS latency of 40, the module maintains its specified throughput under continuous server loads. ECC correction runs on every transaction, preventing silent data corruption during long compute runs. Lifetime warranty coverage reflects the vendor's confidence in 24/7 reliability.

How it compares

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

Price $1,834.99
Pricier than about 85% 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).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $28.67 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 IBM-Lenovo SM37B71262 4 × 77A81441 4 × 77A77032 03LD856
Model nameA-Tech 64 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

How does the 1.10V voltage hold up during sustained 4800MHz operation?

The module runs at the standard DDR5 1.10V, so power draw stays at the JEDEC baseline for 4800MHz RDIMMs under continuous load.

Will the lack of a heat spreader raise noise or temperature in a 24/7 server?

Without a heat spreader the module relies on chassis airflow; registered DDR5 at 1.10V typically stays within thermal limits if the server provides normal front-to-back cooling.

Which motherboard features are required to run this 2Rx4 ECC RDIMM?

You need a server or workstation board with 288-pin DDR5 slots that support registered ECC memory and 2Rx4 organisation.

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