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Green printed circuit board with black memory chips and gold edge contacts

A-Tech

A-Tech 64GB DDR4 2666 ECC RDIMM 2S2Rx4 3DS/TSV Server Memory

SKU CH-E4CY-VVA02

64GB DDR4 2666 ECC registered DIMM with 288 pins, CL19 latency and 1.2V operation for server and workstation upgrades

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 64GB capacity handles heavy server workloads
  • DDR4 2666 speed delivers 21300 MT/s data rate
  • ECC RDIMM registered design corrects memory errors
  • 288-pin DIMM fits standard server slots
  • 20V operation matches DDR4 standard voltage

64GB DDR4 2666 ECC RDIMM Module

This 64GB DDR4 2666 registered DIMM provides error-correcting memory for servers and workstations that require ECC protection. It operates at 1.20V with CL19 latency and uses a 288-pin form factor. The module is built with major-brand chips and 3DS/TSV packaging for high-density capacity.

Registered ECC Design and 288-Pin DIMM

Registered buffering reduces electrical load on the memory controller, allowing stable operation in multi-module server configurations. ECC functionality detects and corrects single-bit errors to protect data integrity. The 288-pin DIMM interface fits standard DDR4 server slots. Major-brand chipset components undergo quality-assurance testing for dependable performance.

2S2Rx4 3DS/TSV Rank Architecture

The 2S2Rx4 (4Rx4 3DS/TSV) rank structure delivers 64GB in a single module through 3D-stacked die technology. This high-density organisation suits platforms that support 3DS/TSV registered DIMMs. Systems without 3DS/TSV support will not recognise the full capacity.

How it compares

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

Price $236.99
Pricier than about 55% 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 $3.70 per GB
Cheaper than about 84% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity64 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Power
Rated voltage1.2 V

Questions about this item

Does the DDR4 2666 interface cap real-world throughput at PC4-21300?

Yes, the module runs at DDR4 2666 MHz which corresponds to the PC4-21300 bandwidth rating; actual throughput will not exceed that specification.

What physical slot and pin count does this 288-pin RDIMM require?

It fits a standard DDR4 DIMM socket with 288 pins; the registered design adds a buffer chip so the motherboard must support registered ECC memory.

How is the module installed and which orientation step is most often missed?

Align the off-centre notch on the 288-pin edge connector with the key in the DDR4 slot, press straight down until both retention clips click, and verify the module sits evenly — the notch offset is the step most people get wrong.

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