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Four green DDR5 RDIMM modules, bare circuit boards, 288-pin edge connectors, no heat spreaders

A-Tech

A-Tech 512GB (4x128GB) DDR5 5600 EC8 RDIMM 2S2Rx4 Server RAM

SKU CH-Z7DS-2DPPR

A 512 GB quad-channel kit of four 128 GB DDR5 5600 EC8 registered ECC DIMMs for servers and workstations

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 512GB (4 x 128GB)

  • 512 GB total capacity from four 128 GB modules
  • DDR5 5600 MHz speed for faster data throughput
  • ECC registered RDIMM with EC8 for error correction
  • Quad-rank 2S2Rx4 3DS/TSV architecture maximises density
  • 10 V standard DDR5 voltage reduces power draw

Server Memory Kit

This A-Tech 512GB kit contains four 128GB DDR5 modules built for servers and workstations that require registered ECC memory. It is not compatible with desktop or laptop computers. The quad-channel kit delivers 512GB total capacity for multi-socket platforms that support high-density DDR5 RDIMMs. Buyers who need unbuffered memory or consumer form factors cannot use this product.

Registered ECC with 3DS Stacking

Each module is a 288-pin DDR5 RDIMM organised as 2S2Rx4 quad-rank using 3DS/TSV stacking. The EC8 registered ECC design provides error correction and signal buffering required by server chipsets. Systems that do not support registered ECC or quad-rank 3DS modules will not accept this memory. Buyers whose platforms require single-rank or dual-rank unbuffered DIMMs must choose a different kit.

512GB Capacity at DDR5 5600

The kit operates at 5600 MT/s with CL46 latency at the standard 1.10V DDR5 voltage. Four modules populate four channels for maximum bandwidth in compatible multi-processor servers. Workloads that exceed 512GB or require speeds above 5600 MT/s will need additional modules or a faster memory tier. Systems limited to lower densities per slot or slower DDR5 speeds cannot utilise the full specification.

How it compares

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

Price $13,341.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $26.06 per GB
Pricier than about 87% 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 128 GB 2S2Rx4 PC5-5600B-R EC8
Part numberAT128G4D5D5600RQ4EC8N11 V
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR5 SDRAM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Kit configurationQuad Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

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Questions about this item

What does the 5600 MHz rating mean once the modules are installed in a server?

The modules run at DDR5 5600 MT/s, delivering up to 44800 MB/s of peak bandwidth per DIMM when the platform operates at the rated speed.

How does the EC8 registered interface affect what the memory controller can do?

EC8 RDIMM places a register on each command and address line and provides 8-bit ECC, so the memory controller sees a buffered load and can correct single-bit errors across the 4Rx4 3DS stack.

What physical space and slot layout do the four 128 GB sticks need?

Each stick is a 288-pin DDR5 DIMM; the kit requires four compatible DDR5 RDIMM slots populated according to the server's quad-channel population rules.

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