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

NEMIX RAM

NEMIX RAM 32GB DDR4 3200 ECC RDIMM 2Rx4 CL22 1.20V 288-Pin Lenovo 4X77A08634 memory upgrade

SKU CH-Z3J6-F34XB

32 GB DDR4 3200 ECC registered DIMM, 2Rx4 CL22 at 1.2 V, 288-pin for Lenovo ThinkSystem servers

  • Capacity32GB
  • SpeedDDR4 3200 (PC4 25600)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 32 GB capacity expands server memory for heavy workloads
  • DDR4 3200 speed delivers high throughput for demanding applications
  • ECC registered design corrects errors to protect data integrity
  • 20 V operation reduces power draw in dense configurations
  • 288-pin RDIMM form factor fits compatible Lenovo ThinkSystem slots

Lenovo ThinkSystem 4X77A08634 DDR4 ECC RDIMM

This 32GB DDR4 3200 registered DIMM targets administrators upgrading Lenovo ThinkSystem servers that require ECC memory. The module delivers 32GB capacity at PC4-25600 speed with CL22 latency for Intel-based platforms. Registered buffering reduces electrical load on the memory controller for stable operation in multi-slot configurations. IT teams choose it when system-specific validation matters more than generic compatibility lists.

Sustained load behaviour with CL22 2Rx4 organisation

Under continuous workloads the 2Rx4 rank layout spreads access across four banks per chip for consistent throughput. ECC corrects single-bit errors in real time without halting the server. Registered signalling maintains signal integrity when all DIMM slots are populated. The 1.20V operating voltage keeps power draw predictable during extended compute jobs. No heat spreader is fitted so airflow across the module surface remains the primary cooling path.

288-pin installation and common pitfalls

Installation follows standard 288-pin DDR4 RDIMM procedure: align the key notch, press until the latches engage, then verify seating. Common issues arise when mixing registered and unbuffered DIMMs in the same channel or exceeding the platform maximum rank count per channel. The module must populate slots in the order specified by the ThinkSystem service manual. Firmware should be current before adding capacity to avoid POST failures.

Highlights

  • 32 GB capacity expands server memory for heavy workloads
  • DDR4 3200 speed delivers high throughput for demanding applications
  • ECC registered design corrects errors to protect data integrity
  • 20 V operation reduces power draw in dense configurations
  • 288-pin RDIMM form factor fits compatible Lenovo ThinkSystem slots

Specifications

BrandNEMIX RAM
SeriesLenovo Server/Workstation Compatible Series Memory
ModelLenovo DDR4 3200MHZ ECC RDIMM Registered Server Memory
Part NumberMR25600-324K1
Capacity32GB
SpeedDDR4 3200 (PC4 25600)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemLenovo
CAS LatencyCL22
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank2Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content32GB (1X32GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V CL22 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the 1.20 V registered DDR4 module add noticeable heat or fan noise when the server runs continuously?

Registered DDR4 at 1.20 V is designed for low-power server operation; the module has no heat spreader, so it relies on the system's existing airflow and does not introduce extra noise.

Must the Lenovo ThinkSystem already support registered ECC DDR4 RDIMMs for this 288-pin stick to function?

Yes, the platform needs registered ECC DDR4 RDIMM slots and a memory controller that accepts 2Rx4 organisation; standard unbuffered desktop slots will not work.

Can this 32 GB CL22 3200 MHz module share a channel with older DDR4 RDIMMs of different capacity or latency in the same server?

Mixing capacities, ranks or CAS latencies in one channel is not recommended; the memory controller will drop all modules to the slowest common settings, reducing performance.

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