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
Two green 288-pin DDR5 RDIMM modules with black chips, 128GB kit

A-Tech

A-Tech 128GB (2x64GB) DDR5 4800 CL40 2Rx4 EC8 RDIMM Server RAM

SKU CH-D3ND-YERK3

A 128 GB dual-channel DDR5 kit with two 64 GB registered ECC modules running at 4800 MHz CL40 for servers and workstations

  • Capacity128GB (2 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes
  • Buffered/RegisteredRegistered

Capacity 128GB (2 x 64GB)

  • 128 GB kit expands server capacity with two 64 GB modules
  • DDR5 4800 speed accelerates data throughput for demanding workloads
  • CL40 latency and 1.1 V operation balance responsiveness with efficiency
  • ECC registered design detects and corrects errors to protect critical data
  • 2Rx4 dual-rank x4 architecture optimises density on 288-pin DIMMs

128GB DDR5 4800 ECC RDIMM Kit

This A-Tech 128GB kit contains two 64GB DDR5 4800 modules built as 2Rx4 EC8 registered DIMMs. They operate at 1.1V with CL40 latency and are designed for servers and workstations that require DDR5 ECC registered memory. The dual-channel kit uses major-brand chips and standard 288-pin form factor.

Who This Suits and Who It Does Not

This memory suits administrators upgrading or repairing DDR5-capable servers and workstations that explicitly support ECC registered RDIMMs. It is not for desktop or laptop computers, nor for systems that accept only unbuffered UDIMMs or non-ECC modules. Buyers whose platforms require a different rank structure, voltage, or speed grade should verify specifications before ordering.

The Deciding Specification

The modules are DDR5 4800 (PC5-38400) ECC registered RDIMMs in a 2Rx4 organisation. That combination of generation, registration, ECC type and rank geometry is the single factor determining whether the kit will function in a given server or workstation.

Highlights

  • 128 GB kit expands server capacity with two 64 GB modules
  • DDR5 4800 speed accelerates data throughput for demanding workloads
  • CL40 latency and 1.1 V operation balance responsiveness with efficiency
  • ECC registered design detects and corrects errors to protect critical data
  • 2Rx4 dual-rank x4 architecture optimises density on 288-pin DIMMs

Specifications

BrandA-Tech
SeriesA-Tech DDR5 Server Memory RAM
ModelA-Tech 64GB 2Rx4 PC5-4800B-R EC8
Capacity128GB (2 x 64GB)
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual 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 do I install the 288-pin DDR5 RDIMM modules in the correct server memory channels?

Power off the server, open the chassis, align each 288-pin module with the DDR5 RDIMM slot notch, press firmly until the retention clips click, then follow the system manual for dual-channel population order using the two 64 GB sticks.

What maintenance will the ECC registered DDR5 kit require over its service life?

No routine maintenance is needed; the modules run at 1.1 V with on-die ECC. If a correctable error count rises or a module fails, replace the affected 64 GB RDIMM — otherwise they operate for the system lifetime.

What thermal or voltage limit appears first when the 2Rx4 modules run sustained workloads at 4800 MHz?

The JEDEC-standard 1.1 V operating voltage is the primary limit; sustained loads keep the DRAM at this voltage, and the registered buffer manages signal integrity without exceeding the 1.10 V specification.

Also in this aisle

People compared these

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