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Green 288-pin DDR4 LRDIMM module with black chips, no heat spreader

A-Tech

A-Tech 128GB DDR4 2666 ECC LRDIMM CL15 Server Memory

SKU CH-KKT0-NVQ92

A 128GB DDR4 2666 ECC LRDIMM module with CL15 latency and 1.2V operation for compatible HP/HPE servers

  • Capacity128GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL15
  • Voltage1.20V
  • ECCYes
  • 128GB capacity in a single module for high-density server deployments
  • DDR4 2666MHz speed with PC4-21300 bandwidth for fast data throughput
  • ECC Load Reduced DIMM technology improves signal integrity and system stability
  • CL15 latency at 1.2V standard voltage balances performance and efficiency
  • Replaces HP part numbers 838087-K21, 840760-091, 840760-191, 850883-001, 868845-001

128GB DDR4 2666 ECC LRDIMM Server Memory

This 128GB DDR4 2666 ECC LRDIMM module targets administrators upgrading compatible HPE servers. It replaces part numbers 838087-K21, 840760-091, 840760-191, 850883-001 and 868845-001. The load-reduced design supports high-density configurations. Buyers needing non-ECC UDIMMs or smaller capacities should look elsewhere.

Thermals Noise and Power Draw

Operating at 1.20V standard DDR4 voltage, the module draws minimal power for its density. No heat spreader is fitted, so airflow across the DIMM slots handles cooling. The CL15 latency at 2666MHz maintains efficient throughput. Systems without adequate chassis airflow may see higher temperatures.

Build Fit and Compatibility

The 288-pin DIMM fits standard DDR4 server slots supporting LRDIMM topology. The 2S4Rx4 (8Rx4) 3DS/TSV organisation requires a memory controller qualified for eight logical ranks per slot. Verify the platform QVL before purchase. It frees additional slots for further expansion where the server supports it.

Points forts

  • 128GB capacity in a single module for high-density server deployments
  • DDR4 2666MHz speed with PC4-21300 bandwidth for fast data throughput
  • ECC Load Reduced DIMM technology improves signal integrity and system stability
  • CL15 latency at 1.2V standard voltage balances performance and efficiency
  • Replaces HP part numbers 838087-K21, 840760-091, 840760-191, 850883-001, 868845-001

Caractéristiques

BrandA-Tech
SeriesHP/HPE RAM Equivalent Replacement Memory
Model838087-K21, 840760-091, 840760-191, 850883-001, 868845-001
Part Number838087-K21, 840760-091, 840760-191, 850883-001, 868845-001
Capacity128GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL15
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank2S4Rx4 (8Rx4)
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesEquivalent Replacement for HP 838087-K21, 840760-091, 840760-191, 850883-001, 868845-001

Questions sur cet article

How do I install the 128GB DDR4 2666 LRDIMM and what step is often missed?

Power off the server, open the chassis, align the 288-pin module with the DDR4 DIMM slot key notch, press firmly until both ejector clips lock, then verify in BIOS that the 128GB capacity and 2666MHz speed are recognised; the step often missed is confirming the memory mode is set for Load Reduced operation.

What maintenance or replacement will this 128GB ECC LRDIMM need over time?

The module has no heat spreader and no moving parts, so routine maintenance is limited to keeping server airflow paths clean; replacement is only required if a correctable ECC error threshold is exceeded or a firmware update mandates a newer revision.

What limit appears first when this 128GB DDR4 2666 CL15 LRDIMM runs sustained workloads?

The primary limit is the DDR4 2666MHz bus bandwidth at 1.20V, which caps sustained throughput at the PC4-21300 rate; thermal throttling can also occur if chassis cooling is insufficient for the high-density 8Rx4 3DS/TSV stack.

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