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Two green DDR4 ECC RDIMM modules, 288-pin, 128GB each, black chips, gold contacts

A-Tech

A-Tech 256GB (2x128GB) DDR4 2933 ECC RDIMM 2S2Rx4 3DS Server RAM

SKU CH-JK5Y-D8KG5

256 GB DDR4 2933 ECC registered server memory kit with two 128 GB quad-rank 3DS modules at 1.2 V

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered

Capacity 256GB (2 x 128GB)

  • 256GB total capacity from two 128GB modules for heavy server workloads
  • DDR4-2933 speed rated at PC4-23400 for fast data throughput
  • ECC registered DIMM detects and corrects memory errors automatically
  • Quad-rank 3DS/TSV stacking fits maximum density into 288-pin slots
  • 2V standard DDR4 voltage keeps power draw low

High-capacity DDR4 server kit

This A-Tech kit delivers 256 GB of DDR4 2933 ECC registered memory across two 128 GB modules. It is built for servers and workstations that require registered DIMMs with quad-rank 3DS/TSV organisation. The modules run at 1.2 V with CL21 latency and use major-brand chips for stable operation under heavy workloads. The dual-channel configuration helps maximise throughput on supported platforms.

Verify registered DIMM support

Confirm that your system accepts DDR4 registered ECC RDIMMs in a 288-pin form factor before ordering. Desktop and laptop platforms cannot use these modules because they require unbuffered memory. Check the motherboard or server manual for qualified memory lists, maximum capacity per slot, and correct population rules for quad-rank 3DS modules. Ensure the firmware and BIOS versions support the 2933 MT/s speed and 4Rx4 rank structure.

Suits memory-intensive server roles

This kit suits administrators expanding virtualisation hosts, database servers or compute nodes that benefit from large registered ECC capacity. It is not for desktop PCs, laptops or consumer workstations that only accept unbuffered UDIMMs. Systems limited to lower ranks per channel or lacking 3DS/TSV support should look at lower-density registered kits instead.

How it compares

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

Price $1,819.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $7.11 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Server Memory RAM
Model nameA-Tech 128 GB 2S2Rx4 PC4-2933Y-R
Total capacity256 GB (2 × 128 GB)
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Kit configurationDual Channel Kit
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

What comes in the 256GB kit and do I need to buy any extra modules or brackets?

The kit includes two 128GB DDR4 2933 ECC RDIMM modules for a total of 256GB. No additional modules or brackets are required.

Should I choose this 2S2Rx4 quad-rank kit or a lower-rank alternative for my server?

Choose this 2S2Rx4 (4Rx4 3DS/TSV) kit when your server or workstation specifically supports quad-rank registered DIMMs and you need maximum capacity per slot.

What does the 2933 MHz rating mean once the memory is installed in a real machine?

The modules run at DDR4 2933 (PC4-23400) with CL21 latency at 1.2V, delivering the rated throughput when the platform supports that speed.

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