We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR4 LRDIMM sticks with black chips and gold contacts

A-Tech

A-Tech 256GB (4x64GB) DDR4 2133 ECC LRDIMM 4Rx4 server RAM

SKU CH-3V4T-CHQXY

A 256 GB quad-channel kit of four 64 GB DDR4 2133 ECC LRDIMM modules running at 1.2 V with CL15 latency

  • Capacity256GB (4 x 64GB)
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced

Capacity 256GB (4 x 64GB)

  • 256 GB total capacity across four 64 GB modules
  • DDR4 2133 MHz speed for faster data throughput
  • ECC Load Reduced DIMM detects and corrects memory errors
  • Quad-rank 4Rx4 organisation increases density per channel
  • 2 V standard voltage reduces power draw per module

Server DDR4 256GB quad-channel kit

This 256GB kit contains four 64GB DDR4 ECC LRDIMM modules designed for servers and workstations that require load-reduced memory. Each module operates at 2133 MHz with CL15 latency at 1.20V and uses a 4Rx4 quad-rank x4 organisation. The 288-pin DIMM form factor fits compatible DDR4 server platforms only and is not suitable for desktop or laptop systems.

Sustained load behaviour with load-reduced ECC

Load-reduced DIMM technology reduces electrical loading on the memory bus, allowing all four quad-rank modules to run at the rated 2133 MHz without down-clocking under continuous workloads. ECC circuitry detects and corrects single-bit errors in real time, maintaining data integrity during extended compute or virtualisation tasks. The 1.20V standard voltage keeps power draw predictable across the full 256GB capacity.

DDR4 interface limits for LRDIMM capacity

DDR4 LRDIMM topology supports higher per-module densities than standard RDIMM, enabling 64GB quad-rank sticks in a four-module kit. The 2133 MT/s data rate and PC4-17000 bandwidth ceiling are set by the DDR4-2133 JEDEC standard, so total throughput scales with the quad-channel controller rather than exceeding the specification. Systems must provide native DDR4 ECC LRDIMM support; mixing with unbuffered or standard registered DIMMs is not supported.

Highlights

  • 256 GB total capacity across four 64 GB modules
  • DDR4 2133 MHz speed for faster data throughput
  • ECC Load Reduced DIMM detects and corrects memory errors
  • Quad-rank 4Rx4 organisation increases density per channel
  • 2 V standard voltage reduces power draw per module

Specifications

BrandA-Tech
SeriesA-Tech DDR4 Server Memory RAM
ModelA-Tech 64GB 4Rx4 PC4-2133P-L
Capacity256GB (4 x 64GB)
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4 (4DRx4)
Multi-channel KitQuad Channel Kit
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How much power does the 1.20V DDR4 2133 LRDIMM kit draw under sustained server loads?

Each module runs at the standard DDR4 voltage of 1.20V; total system draw depends on your platform's memory controller and the number of populated channels.

What server platform do I need to run this 256GB 4Rx4 ECC LRDIMM kit?

A DDR4 server or workstation motherboard with 288-pin DIMM slots that supports quad-rank Load Reduced ECC memory and quad-channel operation.

Can I mix these 64GB quad-rank LRDIMMs with older dual-rank DDR4 RDIMMs in the same host?

No — Load Reduced and Registered DIMMs use different buffering, and mixing ranks breaks the memory controller's training sequence.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.