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Green 288-pin DDR4 RDIMM module with black chips

Brute Networks

Brute Networks 778267-S21 HP Compatible 8GB DDR4-2133 ECC Registered RDIMM 1Rx4 CL15 1.2V

SKU CH-HYXW-A04KV

8GB DDR4-2133 ECC registered RDIMM matching HP part 778267-S21 with CL15 latency and 1.2V operation for compatible server upgrades

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 8GB capacity expands server memory for more virtual machines
  • DDR4-2133 speed with CL15 latency accelerates application response
  • ECC registered design protects data integrity in critical workloads
  • 2V operation reduces power draw per module
  • 100% HP compatible matching part 778267-S21 for guaranteed fit

HP Compatible 8GB DDR4 RDIMM

This 8GB DDR4-2133 registered DIMM carries the HP part number 778267-S21 and is built with major-brand chips from Samsung, SK Hynix or Micron. It targets administrators who need to expand memory capacity in supported HP servers without replacing the platform. The module delivers ECC protection and registered buffering for stable operation in multi-DIMM configurations.

288-Pin Installation and Common Issues

The 288-pin DDR4 form factor fits standard server DIMM slots and requires no tools beyond normal anti-static precautions. Alignment notches prevent backwards insertion, so the module seats in one orientation only. The most frequent issue is mixing registered and unbuffered DIMMs in the same channel, which prevents the system from posting. Populating slots in the order specified by the server manual avoids rank-interleaving errors.

Pre-Order Compatibility Checklist

Verify that the target server lists 778267-S21 or an 8GB PC4-17000 DDR4-2133 1Rx4 1.20V ECC registered RDIMM in its qualified-vendor list. Confirm the platform supports registered memory and the 1Rx4 rank organisation, because some systems only accept 2Rx4 or 2Rx8 modules. Check the maximum DIMM count per channel and the required population sequence before purchasing additional units.

How it compares

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

Price $62.99
Cheaper than about 80% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $7.87 per GB
Pricier than about 56% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameHP
Total capacity8 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

How can I verify the 8GB DDR4-2133 module is running at CL15 after installation?

Enter the server BIOS or UEFI and confirm the memory frequency reads 2133 MT/s with CAS latency 15 at 1.2 V; the registered ECC design will also report corrected error counts if any occur.

What ships with the 778267-S21 compatible RDIMM and what must I source separately?

The box contains one 288-pin 8GB DDR4-2133 1Rx4 ECC registered module; no cables, brackets or additional DIMMs are included, so purchase matching sticks separately if your configuration requires populated pairs.

When should I choose this 8GB 1Rx4 PC4-17000 stick over a different capacity or rank?

Select this module when your HP server requires a single-rank 8GB registered DIMM at 2133 MT/s to fill a specific slot or maintain balanced channel population; use higher-capacity or dual-rank parts only if the platform documentation calls for them.

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