32GB DDR5-5600 ECC UDIMM 2RX8 1.1V
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The Samsung M324R4GA3PB0-CWMOD (HPE spare P64341-0A1) is a 32GB DDR5-5600 dual-rank (2Rx8) ECC unbuffered DIMM engineered for entry-level enterprise servers, workstations, and edge appliances. Operating at 1.1V with transfer speeds up to 5600 MT/s, this module delivers robust memory bandwidth and data integrity for compact enterprise computing. It provides native sideband ECC support coupled with DDR5 on-die reliability enhancements for mission-critical operations.
The M324R4GA3PB0-CWMOD is built upon Samsung's DDR5 SDRAM architecture, utilizing 16Gb DRAM dies configured in a dual-rank 2Rx8 layout (16 chips total, 8 per rank). Unlike registered RDIMMs, this ECC UDIMM directly connects the host memory controller to DRAM without an RCD (Registering Clock Driver) or data buffers, offering reduced latency at the expense of memory bus expansion. DDR5 architecture splits the standard 64-bit data bus into two independent 32-bit subchannels, each augmented with 8 bits of side-band ECC (40 bits total per subchannel) to provide full end-to-end multi-bit detection and single-bit correction alongside internal on-die ECC.
Power regulation is transitioned from the motherboard directly onto the module via an onboard Power Management IC (PMIC) and SPD Hub, providing enhanced power stability, thermal telemetry, and 1.1V VDD/VDDQ operation. Decoding the Samsung part number: 'M324' denotes an ECC Unbuffered DIMM, 'R' indicates DDR5 technology, '4G' designates a 16Gb die density, 'A' indicates 2-rank x8 organization, 'P' references the die revision, and 'CWM' specifies the DDR5-5600 (JEDEC CL46) speed bin. The cross-referenced HPE part number P64341-0A1 identifies this unit as factory-certified memory for HPE Gen11 server platforms.
Always verify against your server's qualified vendor list (QVL).
No. DDR5 ECC UDIMMs (unbuffered) and RDIMMs (registered) possess fundamentally different electrical architectures and signaling protocols; they cannot be intermixed within the same system or installed in RDIMM-exclusive enterprise server sockets.
P64341-0A1 is the HPE spare and assembly part number corresponding to Samsung's M324R4GA3PB0-CWM module, certifying it for use in HPE Gen11 server platforms requiring 32GB DDR5 ECC unbuffered memory.
Yes. Per JEDEC DDR5 specifications, power management has shifted from the host motherboard to an integrated PMIC on the DIMM itself, which strictly regulates voltages (1.1V VDD/VDDQ) to improve efficiency and signal integrity.
The M324R4GA3PB0-CWMOD - P64341-0A1 is a TAA-compliant enterprise server memory module (32GB DDR5-5600 ECC UDIMM 2RX8 1.1V). Sold as certified refurbished with a 1-year warranty and same-day US shipping when in stock. We stock 22 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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