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Green rectangular DIMM module with black chips and gold contacts

Hynix

Hynix HMA84GR7AFR4N-VK 32GB DDR4-2666 ECC REG DIMM desktop RAM

SKU CH-R2AQ-4H2P3

32 GB DDR4-2666 ECC registered DIMM with CL19 latency for servers and workstations

  • Total capacity32 GB
  • ECC supportECC
  • 32 GB capacity handles large workloads
  • DDR4-2666 speed delivers 21300 MB/s bandwidth
  • ECC with registered signal processing protects data integrity
  • CL19 latency at 1.20 V balances responsiveness and efficiency
  • 288-pin DIMM fits standard server and workstation slots

Hynix 32GB DDR4-2666 ECC Registered DIMM

This single-module kit delivers 32GB of DDR4 memory at 2666MHz with CL19 latency. It uses registered signal processing and on-board ECC for data integrity. The 1.20V operating voltage keeps power draw modest. It targets workstations and servers that require validated error correction.

Sustained-load behaviour with registered ECC

Registered buffering reduces electrical load on the memory controller during continuous operation. ECC detects and corrects single-bit errors without halting the system. The DDR4-2666/PC4-21300 rating ensures consistent throughput across long compute sessions. Stability is prioritised over low-latency bursts.

288-pin DIMM build and daily handling

The module follows the standard 288-pin DIMM form factor measuring 5.3" by 1.2" with a 4" thickness. RoHS certification confirms restricted-substance compliance. One 32GB stick occupies a single slot, leaving room for future expansion. Weight is approximately 1.60oz for easy installation.

How it compares

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

Price $419.99
Pricier than about 82% of the 3,647 comparable items (median $90.99).
Total capacity 32 GB
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $13.12 per GB
Pricier than about 81% of the 3,251 comparable items (median $6.75 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
Total capacity32 GB
Memory
ECC supportECC

Questions about this item

How much heat and power does the 1.20 V DDR4-2666 module draw when running continuously?

The module operates at 1.20 V and is rated for DDR4-2666 speed; registered ECC DIMMs of this voltage typically draw a few watts per stick under sustained load.

What motherboard slot and platform support is required for this 288-pin registered ECC DIMM?

It needs a DDR4 288-pin DIMM slot on a workstation or server platform that supports registered memory and ECC functionality.

Will this CL19 registered stick work alongside older unbuffered DDR4 modules I already have?

Registered and unbuffered DIMMs cannot be mixed on the same motherboard; the system requires all slots to use registered modules.

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