Brute Networks 16GB DDR4-2666 2Rx8 Registered ECC server RAM
Registered ECC DDR4 server memory, 16 GB at 2666 MHz, 1.2 V, 2Rx8, 288-pin, HPE 835955-K21 compatible
- Total capacity16 GB
- Rated speedDDR4 2666 (PC4 21300)
- ChipsetMajor Brand Chipset
- Rated voltage1.2 V
- Buffer typeRegistered
- Memory rank2Rx8
- HPE compatible 16 GB DDR4 module validated for drop-in upgrades
- Registered ECC design with 2Rx8 organisation protects data integrity in servers
- 20 V DDR4-2666 speed delivers PC4-21300 bandwidth for demanding workloads
- Major-brand Samsung, SK Hynix or Micron chips ensure OEM-grade reliability
- 100 % tested and matched sets eliminate mismatch risk in multi-slot configs
HPE-Compatible 16GB DDR4-2666 Registered ECC
This 16GB DDR4-2666 module is built for servers and workstations that require registered ECC memory. It uses a 2Rx8 organisation and runs at 1.20V across 288 pins. The stick is validated as 100% compatible with HPE part number 835955-K21.
Capacity and headroom at PC4-21300
A single 16GB DIMM adds substantial capacity to multi-socket platforms running virtualisation, databases or dense container workloads. The DDR4-2666 speed delivers 21300 MB/s bandwidth per module. Registered buffering keeps signal integrity stable when many DIMMs populate a channel, though total system memory remains limited by the motherboard slot count and CPU memory controller.
Upgrade path from smaller or non-ECC DIMMs
This module replaces lower-capacity registered ECC sticks or non-ECC memory that cannot meet data-integrity requirements. The jump is worth it when workloads exceed current RAM headroom or when ECC protection becomes mandatory for error correction. It does not suit systems limited to unbuffered memory or those requiring higher frequencies than 2666 MT/s.
How it compares
Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.
- Price $114.99
- Cheaper than about 64% 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 $7.19 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 name | HPE |
| Total capacity | 16 GB |
| Product type | 288-Pin DDR4 SDRAM |
| Performance | |
| Rated speed | DDR4 2666 (PC4 21300) |
| Processor | |
| Chipset | Major Brand Chipset |
| Memory | |
| ECC support | Yes |
| Buffer type | Registered |
| Memory rank | 2Rx8 |
| Power | |
| Rated voltage | 1.2 V |
Questions about this item
Will this 288-pin DDR4-2666 registered ECC module run in my existing DDR4 server slots?
Yes — it is a standard 288-pin DDR4-2666 registered ECC DIMM that installs in any DDR4 server slot supporting registered memory.
How can I confirm the 16 GB module is recognised at the correct 2666 MT/s speed after installation?
Check the BIOS memory information or run a tool such as dmidecode; it should report 16 GB, DDR4-2666, 2Rx8 registered ECC at 1.20 V.
Does the box contain only the memory stick or are extra items such as a heatsink or cable included?
The package contains the 16 GB DDR4-2666 2Rx8 registered ECC DIMM only; no heatsink, cable or other accessories are supplied.
More in ECC Server RAM
Similar items
Brute Networks 16GB DDR4-2666 ECC Registered RDIMM 2Rx8 CL15 1.2V
- 16 GB
- DDR4 2666
Kingston Technology Corp. KSM48E40BD8KI-32HA 32GB DDR5 4800 CL40 ECC Unbuffered server RAM
- 32 GB
- DDR5 4800
Brute Networks 8GB DDR4-2933 Registered ECC 1Rx8 1.2V 288-Pin server RAM
- 8 GB
- DDR4 2933
Kingston Technology Corp. KSM56E46BD8KM-48HM 48GB DDR5-5600 CL46 ECC Unbuffered 2Rx8 288-pin server RAM
- 48 GB
- DDR5 5600
Brute Networks 16GB DDR4-2666 ECC Registered 1Rx4 1.2V 288-Pin Server RAM
- 16 GB
- DDR4 2666





