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 DDR5 RDIMM 288-pin module no heat spreader

A-Tech

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

SKU CH-F6H3-M1VWF

128 GB DDR5 6400 MHz ECC registered server module with 2Rx4 organisation and 1.1 V operation

  • Capacity128GB
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS Latency32
  • Voltage1.10V
  • ECCYes
  • 128 GB capacity handles large server workloads
  • DDR5 6400 MHz speed delivers high data throughput
  • ECC RDIMM design protects data integrity in critical tasks
  • 2Rx4 rank organisation optimises memory density per slot
  • 10 V operation matches DDR5 standard for efficient power use

128GB DDR5 ECC RDIMM for servers

This 128GB DDR5 6400MHz registered DIMM provides error-correcting memory for server and workstation platforms. The single module uses a 2Rx4 organisation and operates at the standard 1.10V. It is built as a compatible replacement for IBM-Lenovo part numbers 4X77A90993, 4X77A93529 and 03NA217. Systems needing ECC RDIMM capacity can use this module to expand memory.

Thermals noise and power draw

The module runs at the DDR5 standard voltage of 1.10V without a heat spreader. Registered buffering and ECC functionality add minimal overhead to power consumption during normal operation. Passive cooling relies on system airflow across the bare PCB. Acoustic output is silent as the component has no moving parts.

128GB single module capacity

This kit contains one 128GB DDR5 6400MHz RDIMM with CAS latency 32 and 2Rx4 rank configuration. The 288-pin form factor fits DDR5 RDIMM slots in compatible server and workstation boards. Buyers who need multiple matched modules or a different total capacity should verify their platform requirements before ordering.

Highlights

  • 128 GB capacity handles large server workloads
  • DDR5 6400 MHz speed delivers high data throughput
  • ECC RDIMM design protects data integrity in critical tasks
  • 2Rx4 rank organisation optimises memory density per slot
  • 10 V operation matches DDR5 standard for efficient power use

Specifications

BrandA-Tech
SeriesCompatible Replacement for IBM-Lenovo 4X77A90993 4X77A93529 03NA217
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
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesMajor Brand DRAM IC Chips

Questions about this item

How do I install the 288-pin DDR5 RDIMM and which step is often missed?

Align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then verify the 1.10V setting in BIOS for DDR5 6400 operation.

What maintenance or replacement will the 128GB 2Rx4 ECC module need over time?

No routine maintenance is required; ECC corrects single-bit errors automatically, and the module should only be replaced if the system logs uncorrectable memory errors.

What limit appears first when the RDIMM runs sustained workloads at 6400MHz?

The registered buffer and 1.10V DDR5 voltage ceiling constrain maximum stable throughput before thermal or signal-integrity limits are reached.

Also in this aisle

People compared these

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