32GB DDR5-5600 RDIMM 2RX8 1.1V - TAA
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The SK hynix HMCG88AGBRA190N AA is a 32GB DDR5-5600 (PC5-44800) dual-rank Registered DIMM engineered for enterprise server deployments. Operating at 1.1V, this 2Rx8 module delivers high memory bandwidth and power efficiency for virtualization, cloud computing, and database workloads. Built to comply with the Trade Agreements Act (TAA), it satisfies stringent government and enterprise procurement standards.
The HMCG88AGBRA190N AA is built on SK hynix's 16Gb A-die DDR5 DRAM components organized in a dual-rank x8 (2Rx8) topology. Unlike DDR4, DDR5 splits the module interface into two independent 32-bit sub-channels (plus 8 bits of ECC each, totaling 40 bits per subchannel), effectively doubling burst length and improving memory access concurrency. The module features an onboard Registering Clock Driver (RCD) to re-drive command/address signals, alongside an on-DIMM Power Management Integrated Circuit (PMIC) that steps down host 12V power to the native 1.1V VDD/VDDQ/VPP rails for cleaner, more efficient power delivery. Reliable data integrity is sustained through dual-layer error mitigation, combining DRAM-level On-Die ECC with channel-level Sideband ECC managed by the host memory controller. The part number decodes systematically: 'HMCG' designates SK hynix DDR5 RDIMM architecture, '88' indicates 32GB capacity in a 2Rx8 layout, 'A' identifies 16Gb A-die silicon, 'G' denotes the package revision, 'B' reflects lead-free/halogen-free manufacturing, 'R' indicates standard RDIMM construction, and '190' specifies DDR5-5600B timing (CL46).
Always verify against your server's qualified vendor list (QVL).
The TAA designation indicates compliance with the U.S. Trade Agreements Act, signifying the module is manufactured in a designated compliant country and eligible for U.S. Federal Government procurement and GSA Schedule contracts.
While most modern server memory controllers allow different ranks across channels, mixing x8 and x4 modules within the same memory channel is not supported due to differing ECC symbol structures and signal routing.
DDR5 moves power management directly onto the DIMM via a dedicated PMIC, switching host 12V down to 1.1V at the module level. This reduces motherboards power complexity, minimizes voltage drop, and provides granular power telemetry and rail stability.
The HMCG88AGBRA190N AA is a TAA-compliant enterprise server memory module (32GB DDR5-5600 RDIMM 2RX8 1.1V - TAA). Sold as NEW 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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