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Green 288-pin DDR4 RDIMM with black chips and silver heatsink

Brute Networks

Brute Networks 16GB DDR4-2666 ECC Registered RDIMM 2Rx8 1.2V CL15 HP 840756-191

SKU CH-9VWQ-BJYR3

16GB DDR4-2666 ECC registered RDIMM 2Rx8 with CL15 latency and 1.2V operation for HP 840756-191 compatible servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption with registered 2Rx8 architecture
  • 16GB capacity expands server memory for more virtual machines
  • DDR4-2666 speed at CL15 latency accelerates application response
  • 2V operation reduces power draw in dense deployments
  • HP 840756-191 compatible module maintains service contract validity

Compatible HP server memory

Brute Networks supplies a 16GB DDR4-2666 ECC Registered RDIMM built to match HP part 840756-191. The module uses major-brand DRAM and meets OEM specifications so existing service contracts remain valid. It targets administrators who need to expand capacity in supported HP servers without replacing the platform.

288-pin DDR4 RDIMM interface

The single specification that decides fit is the 288-pin DDR4 Registered DIMM form factor with ECC and a 2Rx8 organisation. Systems that require unbuffered UDIMMs, LRDIMMs or a different pin count will not accept this module. Verify the motherboard manual lists RDIMM support before ordering.

Straightforward DIMM installation

Installation follows the standard server DIMM procedure: power down, open the chassis, align the notch with the slot key, and press until the ejectors lock. The most common issue is mixing registered and unbuffered modules in the same channel, which prevents the system from posting. Populate slots per the vendor population guide for the correct rank configuration.

How it compares

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

Price $130.99
Cheaper than about 59% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $8.19 per GB
Pricier than about 58% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameHP
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

What does the 2666 MHz rating mean once the module is installed in a server?

The module runs at DDR4-2666, delivering up to 21300 MB/s of theoretical bandwidth per stick when the platform supports that speed.

How does the registered ECC design affect the memory controller?

Registered buffering places a register between the DRAM and the memory controller, reducing electrical load so larger capacities can be used; ECC adds single-bit error correction for data integrity.

Will this 288-pin RDIMM fit in a standard DDR4 server slot?

Yes, it uses the standard 288-pin DDR4 RDIMM form factor with 1.2 V operation, matching the physical and electrical requirements of compatible server DIMM slots.

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