We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Capacity64GB
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad 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.

Highlights

  • 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

Specifications

BrandA-Tech
SeriesCompatible Replacement for HP
Model809085-391
Capacity64GB
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
Features809085-391

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.