SK Hynix 1x 32GB DDR5-6400 RDIMM PC5-51200R Single Rank x4 Module
Product Overview
The HMCG84AHBRA is a robust, server-grade 32 GB DDR5‑6400 RDIMM featuring ECC, registered buffering, and full DDR5 spec compliance. Its single rank ×4 design, low profile, and genuine SK Hynix quality make it an excellent pick for enterprise systems requiring reliability, capacity, and high memory bandwidth.
Do check your server motherboard/BIOS compatibility (particularly with high-density RDIMMs), but otherwise this is a robust pick for memory-intensive workloads.
This RAM module also operates at a standard voltage of 1.1V with a CAS Latency of CL52, and is designed to allow you to run more applications simultaneously, switch between them faster, and provide a smoother computing experience.
| Technical Specifications | |
| Part No. | HMCG84AHBRA |
| Capacity | 32GB (1x 32GB) |
| Brand | Hynix |
| Speed | DDR5-6400 - 6400MT/s - PC5-51200R |
| Voltage | 1.35V / 1.5V |
| Technology | DDR5-6400 |
| Error Correction | ECC |
| Signal Processing | Registered |
| Form Factor | 288-pin RDIMM |
| CAS Latency | CL52 |
| Pieces in Kit | 1 |
Compatibility
You can verify the compatibility of this RAM module in a number of ways:
- Use the RamCity Finder to see all guaranteed compatible RAM upgrades for your brand and model system or motherboard
- Search online to see if this product is on the QVL (Qualified Vendor List) for your system or motherboard
- Contact one of our Upgrade Evangelists for an expert opinion
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Features & Design
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Built with genuine SK Hynix DRAM chips
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RDIMM + ECC provides registered buffering and error correction—essential for server-class reliability
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Full suite of DDR5 features: bank groups, on‑die ECC, training modes (Vref, CA, CS), write leveling, DFE, ZQ calibration
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