32GB DDR5-6400 RDIMM 1RX4 1.1V
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The SK hynix HMCG84AHBRA292N is a high-performance 32GB DDR5-6400 (PC5-51200) single-rank x4 Registered DIMM (RDIMM) designed for enterprise data centers and compute-intensive server workloads. Operating at an energy-efficient 1.1V, this module incorporates on-module power management (PMIC) and dual 32-bit independent sub-channels to maximize memory bandwidth. Engineered for mission-critical reliability, it features comprehensive error detection including sideband ECC and on-die ECC.
The HMCG84AHBRA292N is built on SK hynix's 16Gb DDR5 SDRAM technology organized in a 1Rx4 (single-rank, 4-bit wide) layout. The physical architecture leverages DDR5's split sub-channel topology, providing two independent 32-bit data channels (plus 8-bit ECC per sub-channel, totaling 40 bits each) to improve bus efficiency and reduce access latency. The module incorporates an advanced Registering Clock Driver (RCD) to re-drive command, address, and clock signals to the DRAM dies, as well as an onboard Power Management IC (PMIC) and SPD Hub with integrated thermal sensors for localized voltage regulation (1.1V VDD/VDDQ) and telemetry.
In the SK hynix part number breakdown, 'HMC' identifies it as an SK hynix DDR5 RDIMM, '8' denotes 32GB total density, '4' specifies 1Rx4 rank/device organization, 'A' indicates standard 1.1V operation, 'HB' indicates 16Gb die density and revision, and the speed grade '292' specifies DDR5-6400 timing parameters (JEDEC CL52). Reliability is reinforced via on-die ECC (ODECC) for internal cell failure mitigation combined with system-level sideband ECC to protect against channel-level transmission errors.
Always verify against your server's qualified vendor list (QVL).
Yes, JEDEC-compliant DDR5 modules are backward compatible and will automatically downclock to the maximum speed supported by the host CPU and memory bus topology.
A 1Rx4 arrangement reduces electrical loading per channel, enabling stable operation at high frequencies like 6400 MT/s, while x4-width chips allow enterprise memory controllers to implement advanced Chipkill/Device-Tagging ECC architectures to correct multi-bit DRAM device failures.
DDR5 moves power management from the server motherboard onto the DIMM itself via a Power Management IC (PMIC). The PMIC efficiently converts the host power rail down to 1.1V VDD, VDDQ, and 1.8V VPP, reducing voltage noise and improving power integrity across memory slots.
The HMCG84AHBRA292N AA is a TAA-compliant enterprise server memory module (32GB DDR5-6400 RDIMM 1RX4 1.1V). Sold as factory-sealed OEM stock with a 1-year warranty and same-day US shipping when in stock. We stock 21 units of this SKU today.
Compatible with enterprise servers requiring this exact configuration. Bulk orders welcome — quotes typically returned within one business hour. Payment terms: NET-30 for approved accounts, or instant on-chain payment via USDC/ETH on Base or Ethereum for autonomous AI agents and Web3 buyers.
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