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Green printed circuit board with black memory chips, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 64GB 2666MHz DDR4 ECC LRDIMM CL19 288-Pin 1.2V 4Rx4 Lenovo 7X77A01305 memory upgrade

SKU CH-73HQ-K6D9W

A 64GB DDR4 2666MHz ECC LRDIMM module built for Lenovo servers, running at 1.2V with CL19 latency and 4Rx4 organisation

  • Capacity64GB
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 64 GB capacity expands server memory headroom for virtualisation workloads
  • DDR4 2666 MHz speed delivers PC4-21300 bandwidth for data-intensive applications
  • ECC load-reduced design maintains signal integrity on dense 4Rx4 modules
  • 2 V operation reduces power draw per installed DIMM
  • 288-pin LRDIMM form factor fits Lenovo 7X77A01305 qualified slots

Lenovo 7X77A01305 Compatible Server Memory

This 64GB DDR4 LRDIMM module is built for Lenovo servers and workstations that require the 7X77A01305 part number. It delivers ECC protection and load-reduced signalling for stable operation in multi-socket platforms.

Sustained Load Behaviour With ECC LRDIMM Design

The load-reduced architecture lowers electrical load on the memory bus, allowing higher densities to run at 2666MHz without signal degradation during long compute sessions. ECC circuitry corrects single-bit errors in real time, preventing silent data corruption under continuous throughput.

Installation Notes And Common Pitfalls

The 288-pin LRDIMM fits standard DDR4 server slots and operates at 1.2V, but it must be paired with a platform that supports 4Rx4 load-reduced modules and the correct memory population rules. Mixing ranks or skipping the required BIOS configuration will prevent the system from posting.

Points forts

  • 64 GB capacity expands server memory headroom for virtualisation workloads
  • DDR4 2666 MHz speed delivers PC4-21300 bandwidth for data-intensive applications
  • ECC load-reduced design maintains signal integrity on dense 4Rx4 modules
  • 2 V operation reduces power draw per installed DIMM
  • 288-pin LRDIMM form factor fits Lenovo 7X77A01305 qualified slots

Caractéristiques

BrandNEMIX RAM
SeriesLenovo Server/Workstation Compatible Series Memory
ModelIBM DDR4 2666MHZ ECC LRDIMM Load Reduced Server Memory
Part NumberML21300-944K1
Capacity64GB
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredLoad Reduced
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemLenovo
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 LRDIMM
Rank4Rx4
FeaturesDDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible
Package Content64GB (1X64GB) DDR4 2666MHZ PC4-21300 4Rx4 1.2V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory

Questions sur cet article

Does the 1.20V CL19 2666MHz ECC LRDIMM run hot or draw extra power under sustained load?

It operates at the standard DDR4 1.20V with a CL19 latency, so power draw and heat stay within normal server-memory limits for continuous operation.

What must the Lenovo system already support to accept this 64GB 288-pin 4Rx4 module?

The platform needs DDR4 LRDIMM slots, ECC support and a memory controller that can address 4Rx4 ranks at 2666MHz.

Can this 64GB DDR4 2666MHz ECC LRDIMM share channels with existing DDR4 RDIMMs in the same server?

LRDIMM and RDIMM technologies cannot be mixed on the same channel; the server would require all slots on that channel to use LRDIMMs.

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