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
Green bare circuit board with gold edge connector and black memory chips, 288-pin DDR5 RDIMM

A-Tech

A-Tech 128GB DDR5 6400MHz ECC RDIMM 2Rx4 Server RAM

SKU CH-K3AP-NB92P

A 128GB DDR5 6400MHz ECC RDIMM module with 2Rx4 rank, CAS 32 latency and 1.1V operation for server workloads

  • Capacity128GB
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS Latency32
  • Voltage1.10V
  • ECCYes
  • 128GB capacity handles heavy server workloads
  • DDR5 6400 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1V operation matches DDR5 standard voltage
  • Samsung chipset ensures component reliability

A-Tech 128GB DDR5 6400MHz ECC RDIMM

This A-Tech module provides 128GB of DDR5 registered ECC memory for server and workstation platforms. It operates at 6400MHz with a CAS latency of 32 and runs at the standard 1.1V. The 288-pin RDIMM uses Samsung chipset components in a 2Rx4 configuration without a heat spreader.

Suited for DDR5 servers needing registered ECC

This module fits systems that require DDR5 RDIMM modules with ECC error correction and registered buffering. Builders whose platforms only accept unbuffered UDIMMs or non-ECC memory cannot use this part. It is also unsuitable for any board limited to earlier DDR generations or a different pin count.

The registered ECC RDIMM form factor decides

The module is a 288-pin DDR5 RDIMM with on-board register and ECC circuitry; the motherboard must explicitly support registered ECC DIMMs. Verify the system manual for DDR5 RDIMM qualification, supported ranks, and channel population rules before purchase.

Highlights

  • 128GB capacity handles heavy server workloads
  • DDR5 6400 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1V operation matches DDR5 standard voltage
  • Samsung chipset ensures component reliability

Specifications

BrandA-Tech
SeriesCompatible Replacement for Samsung M321RAJA0MB2-CCP
ModelA-Tech 128GB DDR5-6400 ECC RDIMM Server RAM Module
Capacity128GB
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS Latency32
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetSamsung Chipset
Heat SpreaderNo
FeaturesMajor Brand DRAM IC Chips

Questions about this item

What is the CAS latency of this 128GB DDR5 6400MHz ECC RDIMM module?

The module runs at CAS latency 32, which is the standard timing for DDR5-6400 registered memory.

How much power does the module draw and does it generate much heat during continuous server workloads?

Operating at 1.10V with no heat spreader, it uses the standard DDR5 voltage; registered buffering keeps signal integrity stable under sustained load.

Which motherboard slot and chipset support are needed for this 288-pin RDIMM to function?

It requires a DDR5 RDIMM slot on a server or workstation board that supports 2Rx4 registered ECC modules and Samsung DRAM chipsets.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

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