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Green PCB memory module with black chips and gold contacts

A-Tech

A-Tech 16GB DDR4 2666MHz ECC RDIMM 1Rx4 for HP 815098-S21 850880-001 872837-091 Server Memory

SKU CH-D0PE-WVQCA

16GB DDR4 2666MHz ECC registered DIMM adds 1Rx4 server memory with 1.2V operation and CL19 latency

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16GB DDR4 2666MHz ECC RDIMM boosts server capacity
  • CL19 1.20V registered DIMM cuts power draw
  • 1Rx4 288-pin layout fits HP 815098-S21 850880-001 872837-091
  • Major-brand chips tested for dependable uptime
  • Lifetime warranty with US-based tech support included

16GB DDR4 2666MHz ECC RDIMM

This 16GB DDR4 2666MHz ECC RDIMM module uses a registered design with 1Rx4 organisation and CL19 latency. It operates at the standard 1.20V DDR4 voltage and fits 288-pin DIMM slots. The module targets servers and workstations that require error-correcting registered memory for stable operation.

Replaces HP 815098-S21 850880-001 872837-091

The module serves as a compatible equivalent for HP part numbers 815098-S21, 850880-001 and 872837-091. It upgrades systems originally configured with lower-capacity or slower DDR4 registered DIMMs. The jump is worth it when the platform supports 2666MHz registered ECC memory and the workload demands higher single-module density.

DDR4 registered DIMM constraints

Registered DIMMs require a memory controller that supports buffered operation and cannot be mixed with unbuffered modules in the same channel. The DDR4 2666MHz speed ceiling is set by the platform's memory controller; faster modules will downclock to the highest supported rate. Buyers needing non-ECC or unbuffered memory for desktop platforms cannot use this module.

How it compares

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

Price $116.99
Cheaper than about 63% 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 $7.31 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Total capacity16 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

Will this 288-pin DDR4 DIMM fit the memory slots in my HP server?

Yes — the module uses the standard DDR4 DIMM 288-pin form factor that matches the slots in HP systems designed for 815098-S21, 850880-001 or 872837-091 memory.

Do I need to configure anything in BIOS after installing this registered ECC module?

Install the DIMM with the server powered off; most HP platforms auto-detect the 2666 MHz CL19 1.20 V registered ECC timings, but verify the memory mode in BIOS if the system does not show the full 16 GB.

When should I expect to replace this 1Rx4 server memory module?

The module is rated for continuous server operation at 1.2 V DDR4 standard voltage; plan replacement only if diagnostics report correctable ECC errors rising or the system fails memory tests.

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