32GB DDR5-7200 RDIMM 2RX8 1.1V
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The SK hynix HMCG88CKBRA437N AA is an enterprise-grade 32GB DDR5-7200 (PC5-57600) dual-rank registered memory module (RDIMM) engineered for next-generation data centers and high-performance computing. Operating at an ultra-low 1.1V nominal voltage, it delivers extreme memory bandwidth and enhanced power efficiency for memory-intensive enterprise workloads. Equipped with dual-channel module architecture, an integrated PMIC, and comprehensive ECC support, it provides rock-solid data integrity for modern multi-threaded server platforms.
The HMCG88CKBRA437N AA is built upon SK hynix DDR5 DRAM architecture utilizing high-density 16Gb monolithic dies configured in a dual-rank x8 (2Rx8) topology. DDR5 departs from legacy DDR4 design by splitting the standard 64-bit wide interface into two independent 32-bit subchannels (each with 8 additional bits dedicated to sideband ECC), effectively doubling concurrent memory access efficiency and burst length. Module stability is governed by an onboard Registering Clock Driver (RCD), which conditions and distributes command and address signals to minimize electrical loading on the host memory controller.
Power regulation has been moved directly onto the module via an onboard Power Management IC (PMIC) that steps down server rail voltages to 1.1V (VDD/VDDQ) and 1.8V (VPP), delivering tightly regulated power delivery and reduced motherboard routing complexity. An integrated Serial Presence Detect (SPD) hub incorporates thermal sensors to actively monitor thermal thresholds. Fault tolerance is delivered via a dual-layer strategy consisting of DRAM on-die ECC (ODECC) for internal cell-level single-bit error correction alongside classic module-level sideband ECC to protect data in transit across the memory bus. In the SK hynix part numbering scheme, 'HMCG' denotes Hynix DDR5 server memory, '88' signifies 32GB 2Rx8 configuration, 'C' designates die revision, 'KB' indicates package/PMIC/RCD configuration, 'R' identifies the RDIMM form factor, and 'A437' indicates the 7200 MT/s speed bin.
Always verify against your server's qualified vendor list (QVL).
Yes. DDR5 RDIMMs are backward compatible and will automatically negotiate down to the highest clock speed supported by the host CPU memory controller and platform configuration (e.g., DDR5-6400, DDR5-5600, or DDR5-4800).
A 2Rx8 structure provides two physical ranks using x8-wide DRAM components, enabling rank interleaving which enhances bandwidth and reduces latency for read/write transitions compared to single-rank modules of the same capacity.
No. DDR5 RDIMMs receive high-efficiency bulk DC input (typically 12V) directly from the host system motherboard, and the onboard PMIC converts this down locally to 1.1V VDD/VDDQ and 1.8V VPP, eliminating host VRM complexity.
The HMCG88CKBRA437N AA is a TAA-compliant enterprise server memory module (32GB DDR5-7200 RDIMM 2RX8 1.1V). Sold as factory-sealed OEM stock with a 1-year warranty and same-day US shipping when in stock. We stock 100 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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