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Green DDR4 ECC RDIMM module, 288-pin, black chips, gold contacts

A-Tech

A-Tech 4GB DDR4 2133MHz ECC RDIMM 1Rx8 for Kingston KVR21R15S8/4 Server Memory

SKU CH-738M-GYAYD

4GB DDR4 2133MHz ECC registered server DIMM compatible with Kingston KVR21R15S8/4, CL15 latency, 1.2V operation

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption with registered DDR4 technology
  • 2133 MHz speed accelerates server workloads through PC4-17000 bandwidth
  • 20V operation reduces power draw while maintaining CL15 stability
  • 288-pin RDIMM form factor fits standard DDR4 server slots
  • 1Rx8 single-rank layout optimises memory controller efficiency

4GB DDR4 ECC RDIMM for servers

This 4GB DDR4 module runs at 2133MHz with CL15 latency and 1.20V operation. It is built as a registered DIMM with ECC for data integrity in server and workstation environments. The single-rank 1Rx8 organisation uses a major-brand chipset. It replaces the Kingston KVR21R15S8/4 part number.

Registered 288-pin DIMM fits DDR4 slots

The module uses the standard 288-pin DDR4 DIMM form factor and requires a platform that supports registered ECC memory. Registered buffering reduces electrical load on the memory controller, freeing headroom for larger memory populations. ECC capability corrects single-bit errors to maintain uptime. Verify your system accepts DDR4 RDIMMs before purchase.

Upgrade from non-ECC or lower capacity

This module adds ECC protection and registered signalling that consumer UDIMMs lack, making it suitable for mission-critical workloads. It steps up from 2GB or unbuffered configurations where data integrity matters. The jump is worth it when your board requires registered ECC and you need validated compatibility with the Kingston reference.

How it compares

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

Price $18.99
Cheaper than about 95% of the 6,523 comparable items (median $188.99).
Total capacity 4 GB
Lower than about 95% of the 6,064 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 75% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Kingston
Model nameKVR21R15S8/4
Total capacity4 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

What is the registered ECC buffer limit that appears first under sustained server workloads?

The 1Rx8 registered ECC design processes commands through a single register per channel, so the register timing margin is the first constraint during continuous heavy use.

How much heat and power does a 1.2 V DDR4 registered DIMM add when running all day?

At 1.20 V the module draws only standard DDR4 power, adding minimal heat and zero audible noise because memory has no moving parts.

Which motherboard slot and chipset features must already be present for this 288-pin RDIMM to work?

A DDR4 RDIMM slot with 288 pins and BIOS support for registered ECC memory is required; consumer boards without registered-DIMM support will not post.

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