32GB DDR5-6400 RDIMM 2RX8 1.1V
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The Samsung M321R4GA3EB2-CCP is an enterprise-grade 32GB DDR5-6400 dual-rank (2Rx8) registered ECC DIMM engineered for next-generation server infrastructure. Operating at a data rate of 6400 MT/s at 1.1V, this RDIMM delivers high bandwidth and low power consumption for hyperscale compute, virtualization, and real-time enterprise analytics. Built with Samsung's 16Gb DRAM dies, it integrates on-module power management and multi-tier error correction for mission-critical reliability.
The M321R4GA3EB2-CCP leverages JEDEC DDR5 server memory architecture, fundamentally splitting the traditional 64-bit data channel into two independent 32-bit subchannels (each with 8 sideband bits dedicated to ECC, forming dual 40-bit channels). The module is populated in a 2Rx8 (dual-rank, x8 chip width) topology utilizing monolithic 16Gb E-die Samsung DRAM components. It features a dedicated DDR5 Registering Clock Driver (RCD) to re-drive command, address, and clock signals to the DRAM chips, mitigating electrical bus loading on the host memory controller.
Unlike DDR4, DDR5 RDIMMs shift power regulation directly onto the PCB via an onboard Power Management IC (PMIC), which steps down host 12V input power to 1.1V VDD/VDDQ/VPP with tighter voltage regulation and transient response. Telemetry and configuration are handled by an integrated SPD Hub with integrated dual thermal sensors. Reliability is reinforced via a two-tier error management approach combining autonomous On-Die ECC (ODECC) within each DRAM chip to correct single-bit internal errors with external sideband ECC evaluated by the CPU memory controller. In the part number, 'M321' denotes a Samsung DDR5 RDIMM, '4GA3' specifies a 32GB 2Rx8 configuration, 'E' identifies the die stepping, 'B2' represents the PCB design revision, and 'CCP' decodes to JEDEC DDR5-6400 (PC5-51200) timing specifications.
Always verify against your server's qualified vendor list (QVL).
Yes. As with JEDEC-compliant DDR5 modules, this RDIMM automatically negotiates down to the maximum memory frequency supported by the host CPU memory controller and motherboard BIOS (e.g., downclocking to 4800 MT/s or 5600 MT/s).
Mixing x8 and x4 memory organizations within the same memory channel is strictly prohibited by both Intel and AMD memory guidelines. Mixing across different channels on the same socket is heavily discouraged as it can disable optimal interleaving, reduce memory performance, or trigger system boot failures.
The on-module Power Management IC (PMIC) shifts DC-to-DC voltage conversion from the server motherboard directly to the DIMM. It converts an input 12V rail to the 1.1V and 1.8V levels required by the DRAM and RCD, providing superior voltage stability, reduced noise, and granular per-module power telemetry.
The M321R4GA3EB2-CCP is a enterprise server memory module (32GB DDR5-6400 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 0 units of this SKU today, with 250 more incoming.
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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