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Four green DDR5 RDIMM modules with black heatspreaders, 288-pin, 64GB each

A-Tech

A-Tech 256GB (4x64GB) DDR5 5600 ECC Registered Server RAM

SKU CH-TKX5-NG01R

256 GB quad-channel kit of four 64 GB DDR5 5600 registered ECC DIMMs at CL46 and 1.1 V for servers and workstations

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 256GB (4 x 64GB)

  • 256 GB quad-channel kit scales server memory capacity
  • 5600 MHz DDR5 speed accelerates data-intensive workloads
  • ECC registered design detects and corrects single-bit errors
  • 1 V DDR5 standard voltage reduces power draw per module
  • 2Rx4 dual-rank organisation optimises memory controller efficiency

Server-grade DDR5 ECC RDIMM kit

This 256GB quad-channel kit contains four 64GB registered DIMMs built for DDR5 server and workstation platforms only. It will not fit desktop or laptop systems. Each module uses a 288-pin form factor with ECC error correction for data integrity in critical workloads.

Thermals power and acoustics

The modules operate at the standard DDR5 voltage of 1.1V, keeping power draw low for high-density server configurations. Passive cooling relies on chassis airflow; no fans or active cooling are included. Acoustic impact is negligible in typical rack or workstation environments.

Registered ECC with dual-rank x4 organisation

CL46 latency at 5600 MT/s (PC5-44800) defines the timing envelope for memory-controller compatibility. The 2Rx4 rank structure and EC8 registered buffer determine whether your platform can populate all four slots at rated speed.

How it compares

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

Price $7,139.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $27.89 per GB
Pricier than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR5 Server Memory RAM
Model nameA-Tech 64 GB 2Rx4 PC5-5600B-R EC8
Total capacity256 GB (4 × 64 GB)
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationQuad Channel Kit
Power
Rated voltage1.1 V

Other versions of this model

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Questions about this item

How do I install these 288-pin DDR5 RDIMMs in the correct quad-channel order?

Insert each 64 GB module into the slots your motherboard manual designates for quad-channel population, pressing straight down until the latches click; the registered buffer adds a slight delay before the POST memory check completes.

When will the ECC registered DIMMs need replacement?

The modules carry a lifetime warranty and have no user-serviceable parts; replacement is only required if a memory test reports uncorrectable errors on a specific 64 GB stick.

At what point does the CL46 latency at 5600 MT/s become the bottleneck under sustained load?

The CAS 46 timing at 1.10 V is the first fixed limit; once the memory controller saturates the 44800 MB/s bandwidth, further throughput gains require higher-frequency or lower-latency DIMMs.

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