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 circuit board with black memory chips and gold edge connectors

Brute Networks

Brute Networks 16GB DDR4-2666 ECC Registered RDIMM 1Rx4 CL15 1.2V 288-Pin

SKU CH-H3FZ-7KHMA

16 GB DDR4-2666 ECC registered RDIMM, CL15, 1.2 V, 1Rx4, 288-pin, HP 867855-B21 compatible

  • Capacity16GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL15
  • Voltage1.20V
  • ECCYes
  • 16 GB capacity expands server workloads
  • DDR4-2666 speed matches PC4-21300 spec
  • CL15 latency at 1.2 V registered operation
  • 1Rx4 ECC registered design protects data integrity
  • HP 867855-B21 compatible with major-brand chips

Server Memory Upgrade

This 16GB DDR4-2666 ECC Registered RDIMM targets administrators who need to expand capacity in compatible HP servers. The module delivers 16GB at PC4-21300 speed with CL15 latency and 1.20V operation. It suits workloads that demand error correction and registered signalling for stability.

HP Compatible Assurance

The stick carries part number 867855-B21 equivalence and uses major-brand Samsung, SK Hynix or Micron components. Third-party sourcing means the module meets OEM specifications while preserving existing service contracts. Buyers who require vendor-locked firmware or proprietary thermal sensors should verify support before purchase.

Registered RDIMM Build

A 288-pin registered design adds a buffer that reduces electrical load on the memory controller, allowing larger populations per channel. Single-rank 1Rx4 organisation keeps signal integrity high at 2666 MT/s. Systems that accept only unbuffered UDIMMs or require different rank configurations cannot use this module.

Highlights

  • 16 GB capacity expands server workloads
  • DDR4-2666 speed matches PC4-21300 spec
  • CL15 latency at 1.2 V registered operation
  • 1Rx4 ECC registered design protects data integrity
  • HP 867855-B21 compatible with major-brand chips

Specifications

BrandHP
Capacity16GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL15
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
ChipsetMajor Brand Chipset

Questions about this item

Will the 1Rx4 ECC registered RDIMM need replacement under normal server loads?

The module uses major-brand Samsung, SK Hynix or Micron chips and carries a lifetime warranty; replacement is only required if a chip fails or capacity needs increase.

What limit appears first when the 2666 MHz CL15 kit runs at full load continuously?

The DDR4-2666 JEDEC speed ceiling is reached before any thermal or power limit on this 1.20 V registered DIMM.

How much heat and power does the 1.20 V 288-pin DDR4 module produce during all-day operation?

At the rated 1.20 V the 16 GB RDIMM draws minimal power and generates low heat, well within standard server airflow limits.

Also in this aisle

People compared these

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