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Green PCB DDR4 LRDIMM module with black chips and gold contacts

A-Tech

A-Tech 64GB DDR4 2400 ECC LRDIMM 4Rx4 809085-391 server RAM

SKU CH-PJ4M-8MNVJ

64GB DDR4 2400 ECC LRDIMM module with 4Rx4 ranks and CL17 latency for HP servers

  • Total capacity64 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • 64 GB capacity handles heavy server workloads
  • DDR4 2400 MHz speed moves data efficiently
  • ECC LRDIMM with 4Rx4 rank protects data integrity
  • 20 V operation matches DDR4 standard voltage
  • 288-pin DIMM fits compatible HP 809085-391 systems

64 GB DDR4 LRDIMM for HP servers

This 64 GB DDR4 2400 ECC LRDIMM is a load-reduced module built for HP server and workstation platforms that require part number 809085-391. It suits administrators who need high-density registered memory with error correction for virtualisation or database workloads.

DDR4 2400 CL17 at 1.20 V with 4Rx4 organisation

The module runs at DDR4 2400 (PC4-19200) with a CAS latency of 17 and standard 1.20 V voltage. Its quad-rank 4Rx4 layout increases capacity per slot but reduces the maximum number of modules the memory controller can address per channel, limiting total system density on platforms with strict rank-count rules.

288-pin DIMM installation

The 288-pin DIMM seats in standard DDR4 server slots, yet the supplier notes a 262-pin form factor reference that may reflect a labelling inconsistency; buyers must confirm the exact slot type and supported rank configuration in their system documentation before purchase to avoid POST failures or reduced memory capacity.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $186.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $2.92 per GB
Cheaper than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for HP
Model name809085-391
Total capacity64 GB
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Power
Rated voltage1.2 V

Questions about this item

Should I choose the 64GB 4Rx4 LRDIMM or a different capacity for my HP server?

This module is a single 64GB stick built to replace HP part 809085-391. Use it when your system requires a 64GB LRDIMM with 4Rx4 organisation.

What does the DDR4 2400 (PC4-19200) rating mean once the module is installed?

The memory runs at 2400 MT/s with CL17 latency at 1.20V, delivering the bandwidth and timing the platform expects for this speed grade.

Is this a standard 288-pin DDR4 DIMM or the 262-pin form factor listed in some specs?

The product is a 288-pin DDR4 LRDIMM; the 262-pin reference appears to be a documentation error for this server module.

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