32GB DDR5-6400 RDIMM 1RX4 1.1V
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The Micron MTC20F1045S1RC64BH1 is an enterprise-grade 32GB DDR5-6400 ECC Registered DIMM (RDIMM) engineered for mission-critical hyperscale and data center deployments. Operating at 6400 MT/s on a native 1.1V supply, this single-rank x4 module delivers up to 51.2 GB/s peak bandwidth per channel while optimizing thermal and power efficiency. It features advanced reliability mechanics including on-module power management, integrated SPD hub telemetry, and dual-layer ECC protection.
The MTC20F1045S1RC64BH1 is architected on JEDEC DDR5 standards utilizing a 1Rx4 layout comprised of twenty 16Gb-density DRAM dies (sixteen dedicated to payload data and four handling sideband ECC). DDR5 splits the traditional 64-bit channel into two independent 32-bit subchannels (each with an 8-bit ECC overhead, yielding two 40-bit subchannels), dramatically improving memory access granularity and bus efficiency. Buffering and signal integrity are maintained by a precision Register Clock Driver (RCD), stabilizing command, address, and clock signals to support high-frequency 6400 MT/s operation. Reliability is reinforced via on-die ECC (ODECC) inside each DRAM die paired with system-level sideband ECC across the bus for comprehensive multi-bit detection and correction. Power regulation is transferred from the motherboard directly to the DIMM via an onboard Power Management IC (PMIC), which converts a 12V input rail down to 1.1V (VDD/VDDQ/VIO) and 1.8V (VPP). Thermal and configuration management are handled by an integrated SPD Hub with embedded temperature sensors. The Micron part number decodes as: MTC (Micron Technology Commercial Module), 20F (288-pin RDIMM form factor), 1045 (module configuration code), S1 (single-rank), R (Registered DIMM), C64B (DDR5-6400 CL52 speed bin), and H1/3SFF (silicon stepping and design revision).
Always verify against your server's qualified vendor list (QVL).
Yes. The JEDEC-compliant SPD profiles allow this module to automatically downclock to 5600 MT/s, 4800 MT/s, or any supported maximum clock speed dictated by the server processor and memory population rules.
A single-rank (1Rx4) configuration presents a lower electrical capacitive load per channel compared to dual-rank modules, facilitating stable operation at high frequencies like 6400 MT/s while using x4 chips to support robust server-grade chipkill multi-bit error correction.
No. Server motherboards strictly prohibit mixing RDIMMs with UDIMMs or LRDIMMs due to incompatible electrical architectures, control signal timing, and pinout variations.
The MTC20F1045S1RC64BH1 3SFF is a 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 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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