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Green rectangular DDR4 DIMM with gold edge connector and black memory chips

A-Tech

A-Tech 8GB DDR4 2400MHz ECC RDIMM 1Rx4 for HP 843311-B21 809079-581 Server Memory

SKU CH-2D37-AG33W

8 GB DDR4 2400 MHz ECC registered DIMM with CL17 latency and 1.2 V operation for HP server upgrades

  • Capacity8GB
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • 8GB capacity lets you handle larger server workloads
  • DDR4 2400MHz speed with CL17 latency delivers responsive data access
  • ECC registered design protects data integrity in critical applications
  • 2V operation reduces power draw and heat output
  • 1Rx4 288-pin DIMM fits HP 843311-B21 and 809079-581 servers

8GB DDR4 2400 ECC RDIMM

This 8GB DDR4 2400 ECC RDIMM module provides registered error-correcting memory for compatible HP servers and workstations. It operates at 2400 MHz with PC4-19200 bandwidth and a CAS latency of 17. The single-rank 1Rx4 design uses major-brand chips at the standard 1.2V voltage.

Compatibility check before ordering

Verify that your system supports DDR4 registered DIMMs with ECC and accepts a 288-pin form factor. Confirm the motherboard or server documentation lists the HP part numbers 843311-B21, 809079-581, 852261-001, Q1V94A, T9V39AT or T9V39AA as supported replacements. Ensure the platform can run memory at 2400 MHz and 1.2V without requiring a different voltage or rank configuration.

Upgrade context and value

This module replaces an HP original 8GB DDR4 2400 ECC RDIMM in supported servers and workstations. The jump is worthwhile when expanding total memory capacity or replacing a failed stick with a tested equivalent that matches the 1Rx4 rank layout. Systems limited to unbuffered or non-ECC memory cannot use this registered module.

Highlights

  • 8GB capacity lets you handle larger server workloads
  • DDR4 2400MHz speed with CL17 latency delivers responsive data access
  • ECC registered design protects data integrity in critical applications
  • 2V operation reduces power draw and heat output
  • 1Rx4 288-pin DIMM fits HP 843311-B21 and 809079-581 servers

Specifications

BrandA-Tech
Capacity8GB
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions about this item

Does the module ship as a single 8 GB stick or do I need to buy anything else to install it?

The package contains one 8 GB DDR4 2400 MHz ECC registered DIMM; no extra parts are required for installation.

My server lists HP part numbers 843311-B21 and 809079-581 — which one does this module replace?

This 8 GB DDR4 2400 MHz CL17 1Rx4 registered ECC DIMM is a direct replacement for both HP 843311-B21 and 809079-581.

Will the rated 2400 MHz speed actually run at that frequency in my HP ProLiant Gen9 server?

The module operates at DDR4 2400 MHz (PC4-19200) with CL17 latency at the standard 1.2 V when the platform supports that speed.

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