64GB DDR5-6400 RDIMM 2RX4 1.1V
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The Micron MTC40F2046S1RC64BH1R is an enterprise-grade 64GB DDR5-6400 (PC5-51200) dual-rank registered memory module (2Rx4 RDIMM) engineered for next-generation datacenter platforms. Operating at a standard DDR5 operating voltage of 1.1V, it provides substantial bandwidth throughput and improved power efficiency for memory-intensive enterprise workloads. Featuring an on-module PMIC and advanced telemetry sensors, it ensures high signal integrity and reliability in mission-critical server environments.
The MTC40F2046S1RC64BH1R is built upon JEDEC solid-state DDR5 SDRAM architecture featuring two independent 32-bit subchannels (40-bit with sideband ECC) on a single physical DIMM, doubling the burst length and concurrency compared to DDR4. The module uses a dual-rank x4 (2Rx4) configuration populated with high-density 16Gb monolithic DRAM dies. A central Registering Clock Driver (RCD) buffers command, address, and clock signals to minimize electrical loading on the host memory controller.
Power regulation is shifted directly to the DIMM via an onboard Power Management IC (PMIC), which conditions the 12V host input down to 1.1V VDD/VDDQ/VPP, lowering motherboard complexity and improving power distribution. The module also features an integrated SPD Hub with embedded temperature sensors for real-time thermal monitoring. Data reliability is enforced across two tiers: internal on-die ECC (ODECC) for managing raw bit-flips inside the DRAM cells, and end-to-end sideband bus ECC handled by the system memory controller. Decoding the part number reveals Micron Module ('MTC'), DDR5 SDRAM ('F'), 2Rx4 configuration ('2046'), Registered DIMM ('RC'), DDR5-6400 speed bin ('64B'), and die revision stepping ('H1R').
Always verify against your server's qualified vendor list (QVL).
Yes. DDR5 RDIMMs are backward compatible in terms of bus frequency. If installed on a platform supporting maximum speeds of 4800 MT/s or 5600 MT/s (such as Intel Sapphire/Emerald Rapids or AMD Genoa), the module will automatically clock down to the platform's supported speed.
No. DDR5 RDIMMs feature an incompatible 288-pin physical keying compared to DDR4 and cannot physically or electrically interchange. Additionally, registered RDIMMs cannot be mixed with unbuffered ECC (ECC UDIMMs) or non-ECC modules.
Unlike DDR4 modules which rely on the motherboard for voltage regulation, DDR5 modules utilize an on-module Power Management Integrated Circuit (PMIC). The PMIC converts input voltage directly on the module, providing tighter voltage tolerances, reduced motherboard complexity, and improved signal stability at high speeds like 6400 MT/s.
The MTC40F2046S1RC64BH1R 2XCC is a enterprise server memory module (64GB DDR5-6400 RDIMM 2RX4 1.1V). Sold as factory-sealed OEM stock with a 1-year warranty and same-day US shipping when in stock. We stock 93 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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