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Four green DDR4 server memory modules with gold contacts and black heat spreaders

A-Tech

A-Tech 256GB (4x64GB) DDR4 2933 ECC LRDIMM 4Rx4 Server RAM

SKU CH-J0NZ-D8XM4

A 256 GB quad-channel kit of four 64 GB DDR4 2933 ECC LRDIMM modules with CL21 latency and 1.2 V operation

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 256GB (4 x 64GB)

  • 256 GB total capacity from four 64 GB modules
  • DDR4 2933 MHz speed with PC4-23400 bandwidth rating
  • ECC Load Reduced DIMM for data integrity in servers
  • 4Rx4 quad-rank design maximises density per slot
  • 20 V standard DDR4 voltage for efficient operation

256GB quad-channel server kit

This A-Tech kit provides 256GB of DDR4 memory across four 64GB LRDIMM modules. It targets servers and workstations that require ECC Load Reduced DIMMs with a 4Rx4 organisation. The modules operate at 2933 MHz with CL21 latency at the standard 1.20V. Desktop and laptop systems cannot use these modules.

Upgrading from lower-capacity LRDIMMs

The jump is worthwhile when the current memory limit restricts virtual-machine density, in-memory databases or large dataset processing. Replacing smaller LRDIMMs with these 64GB modules raises the ceiling without changing the memory topology. Systems that already run 4Rx4 Load Reduced memory at 2933 MHz gain capacity without a speed or rank change.

Sustained load behaviour

ECC error correction protects data integrity during continuous operation. The Load Reduced design lowers electrical loading on the memory bus, helping signal stability when all four channels are fully populated. Standard 1.20V operation keeps power draw predictable during extended compute tasks.

How it compares

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

Price $1,315.99
Pricier than about 82% 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 $5.14 per GB
Cheaper than about 72% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Server Memory RAM
Model nameA-Tech 64 GB 4Rx4 PC4-2933Y-L
Total capacity256 GB (4 × 64 GB)
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4 (4DRx4)
Kit configurationQuad Channel Kit
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR4 LRDIMM modules fit my server's memory slots?

These 288-pin DDR4 LRDIMM modules fit server and workstation boards that support DDR4 ECC load-reduced memory; they are not compatible with desktop or laptop systems.

What is the correct seating order for the four 64 GB modules in a quad-channel setup?

Install the four 64 GB modules following your system manual's quad-channel population guide; a common error is placing modules in the wrong slot sequence, which prevents the system from recognising the full 256 GB capacity.

How do I know when a 64 GB module in the 256 GB kit needs replacement?

If the server reports corrected ECC errors, fails memory diagnostics, or will not POST with a specific 64 GB module installed, that module should be replaced.

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