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Green DDR5 RDIMM module with gold contacts and black chips

SK hynix

SK hynix HMCG88AGBRA190N 32 GB DDR5 RDIMM

SKU CH-KD9G-B2KYY

A 32 GB DDR5 RDIMM module running at 5600 MT/s with ECC and 288 pins for server use

  • 32 GB capacity supports large server workloads
  • DDR5 technology delivers PC5-5600B bus speed
  • ECC memory detects and corrects data errors
  • RDIMM form factor fits 288-pin registered DIMM slots
  • Single 2Rx8 module simplifies memory configuration

Server RDIMM with ECC

This 32 GB DDR5 RDIMM uses registered signalling and on-die ECC for data integrity. It targets servers and workstations that require error correction under continuous operation. The single-module design simplifies capacity planning in multi-channel configurations.

Sustained-load behaviour

Registered buffering reduces electrical load on the memory controller during prolonged workloads. ECC corrects single-bit errors in real time without halting the system. PC5-5600B rating supports 5600 MT/s throughput across 288 pins for consistent bandwidth.

Upgrade context

The module replaces older registered DIMMs that lack DDR5 speeds or ECC capability. The jump is worth it when applications demand higher bandwidth and hardware-level error protection. Systems limited to lower bus speeds or unbuffered memory cannot use this part.

How it compares

Measured against everything we stock in Cable Locks & Laptop Extras, at today’s prices. Recalculated every night.

Price $866.99
Pricier than about 91% of the 8,808 comparable items (median $16.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much power does this 32 GB DDR5 RDIMM draw when running continuously at PC5-5600B speeds?

The module operates at the standard DDR5 voltage of 1.1 V, and its registered design reduces electrical load on the memory controller, helping keep system power draw predictable during all-day workloads.

What motherboard feature is required to use this HMCG88AGBRA190N module?

A server or workstation motherboard with DDR5 RDIMM slots and support for registered ECC memory is needed; the 288-pin form factor and PC5-5600B rating must match the platform's qualified-vendor list.

Can I add this 32 GB stick to a server that already has registered DDR5 modules installed?

Yes, provided the existing modules are also DDR5 RDIMMs with ECC; mixing ranks or speeds may force the system to run at the lowest common PC5-5600B setting across all populated channels.

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