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Green circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 64GB DDR4 2666 ECC LRDIMM 4Rx4 for IBM-Lenovo 01AG622 01DE975 01KR372 4X77A78614 7X77A01305 server RAM

SKU CH-M8FM-XK2Q5

64GB DDR4 2666 ECC LRDIMM module with CL19 latency and 1.20V operation for IBM-Lenovo servers

  • Capacity64GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • 64 GB capacity enables larger workloads per module
  • DDR4 2666 MHz speed delivers 21300 MB/s bandwidth
  • ECC LRDIMM with 4Rx4 rank corrects errors and reduces bus load
  • CL19 latency at 1.20 V standard voltage
  • 288-pin DIMM fits IBM-Lenovo 01AG622 01DE975 01KR372 4X77A78614 7X77A01305

64GB DDR4 2666 ECC LRDIMM for IBM-Lenovo servers

This 64GB DDR4 2666 ECC LRDIMM module uses a 4Rx4 organisation and runs at 1.20V with CL19 latency. It replaces IBM-Lenovo part numbers 01AG622, 01DE975, 01KR372, 4X77A78614 and 7X77A01305. The load-reduced design suits server and workstation platforms that require registered ECC memory in a 288-pin DIMM form factor.

Thermals noise and power draw at 1.20V

Operating at the standard DDR4 voltage of 1.20V keeps power draw low during typical workloads. The load-reduced architecture reduces electrical loading on the memory bus, which helps maintain stable thermals without demanding additional airflow. No moving parts are present, so the module adds no audible noise to the chassis.

Sustained load behaviour with 4Rx4 organisation

The 4Rx4 rank structure and ECC capability maintain data integrity during extended operation. Load-reduced buffering absorbs signal stress that can accumulate under continuous read-write cycles. Major-brand chips and A-Tech quality testing support consistent throughput for long-running server tasks. Systems not designed for LRDIMM or 4Rx4 modules will not support this part.

Points forts

  • 64 GB capacity enables larger workloads per module
  • DDR4 2666 MHz speed delivers 21300 MB/s bandwidth
  • ECC LRDIMM with 4Rx4 rank corrects errors and reduces bus load
  • CL19 latency at 1.20 V standard voltage
  • 288-pin DIMM fits IBM-Lenovo 01AG622 01DE975 01KR372 4X77A78614 7X77A01305

Caractéristiques

BrandA-Tech
Capacity64GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions sur cet article

How do I install this 64GB DDR4 2666 ECC LRDIMM 4Rx4 module in my IBM-Lenovo server, and what step is often missed?

Power down the server, open the chassis, align the 288-pin module with the DIMM slot key, press firmly until the retention clips click, then verify in BIOS that the 64GB capacity and 2666MHz speed are recognised; the step often missed is confirming the server supports LRDIMM 4Rx4 population rules before installation.

What maintenance or replacement will this A-Tech 64GB DDR4 2666 ECC LRDIMM 4Rx4 server memory need over time?

No routine maintenance is required; keep the server air filters clean so the 1.20V modules stay cool, run periodic memory diagnostics, and replace the module only if ECC correctable errors accumulate beyond the platform threshold or a hard failure occurs.

What limit appears first on this 64GB DDR4 2666 CL19 1.20V ECC LRDIMM 4Rx4 under sustained heavy workloads?

The 2666MHz data rate and CL19 latency set the bandwidth ceiling, while the 1.20V supply and 4Rx4 organisation constrain maximum throughput before the memory controller or thermal envelope becomes the bottleneck.

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