MICRON MTC40F2046S1RC64BD2 64GB DDR5 6400 RDIMM
The Micron MTC40F2046S1RC64BD2 is a 64GB DDR5 ECC RDIMM rated at 6400 MT/s, aimed at buyers building or maintaining next-generation enterprise servers, AI compute platforms, and HPC environments. As a registered DIMM with ECC, it targets server platforms that require registered DDR5 modules for reliability and high per-socket capacity. Note that DDR5 RDIMMs are not backward or forward compatible with DDR4 platforms, so confirm your motherboard or server QVL lists this module or an equivalent DDR5 RDIMM before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | MTC40F2046S1RC64BD2 |
| Brand | Micron |
| Memory Type | DDR5 ECC RDIMM (Registered DIMM) |
| Capacity | 64GB |
| Data Rate | 6400 MT/s |
| Speed Grade | PC5-51200R |
| Rank Configuration | 2Rx4 (Dual Rank) |
| Error Correction | ECC Supported |
| CAS Latency | CL52 |
| Operating Voltage | 1.1V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Architecture | x4-based DRAM |
| Data Width | 80-bit (64-bit Data + 8-bit ECC + parity bits) |
| DRAM Density | 32Gb DDR5 DRAM |
| Compliance | JEDEC DDR5 Standard |
| Memory Bandwidth | 51.2 GB/s |
| Operating Temperature | 0°C to 95°C |
| Applications | Next-generation enterprise servers, data centers, AI computing platforms, cloud computing, and high-performance computing environments |
Good to know
- As an ECC RDIMM, this module is intended for server and workstation platforms that support registered DDR5 memory; it will not operate in consumer desktop boards designed for UDIMMs, and DDR5 modules cannot be mixed with DDR4 regardless of physical fit.
- Within Micron’s DDR5 RDIMM portfolio, this is the dual-rank (2Rx4) 64GB variant at 6400 MT/s — dual-rank modules typically interleave better under heavy memory pressure than single-rank equivalents, which suits virtualization hosts and cache-tier workloads.
- For maximum effective bandwidth on a given CPU, populate all supported memory channels with matched modules of the same speed grade and rank configuration; mixed population can cause the platform to fall back to a lower data rate, so verify channel population rules in your server’s memory configuration guide.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Micron MTC40F2046S1RC64BD2 is a 64GB DDR5 ECC RDIMM rated at 6400 MT/s, aimed at buyers building or maintaining next-generation enterprise servers, AI compute platforms, and HPC environments. As a registered DIMM with ECC, it targets server platforms that require registered DDR5 modules for reliability and high per-socket capacity. Note that DDR5 RDIMMs are not backward or forward compatible with DDR4 platforms, so confirm your motherboard or server QVL lists this module or an equivalent DDR5 RDIMM before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | MTC40F2046S1RC64BD2 |
| Brand | Micron |
| Memory Type | DDR5 ECC RDIMM (Registered DIMM) |
| Capacity | 64GB |
| Data Rate | 6400 MT/s |
| Speed Grade | PC5-51200R |
| Rank Configuration | 2Rx4 (Dual Rank) |
| Error Correction | ECC Supported |
| CAS Latency | CL52 |
| Operating Voltage | 1.1V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Architecture | x4-based DRAM |
| Data Width | 80-bit (64-bit Data + 8-bit ECC + parity bits) |
| DRAM Density | 32Gb DDR5 DRAM |
| Compliance | JEDEC DDR5 Standard |
| Memory Bandwidth | 51.2 GB/s |
| Operating Temperature | 0°C to 95°C |
| Applications | Next-generation enterprise servers, data centers, AI computing platforms, cloud computing, and high-performance computing environments |
Good to know
- As an ECC RDIMM, this module is intended for server and workstation platforms that support registered DDR5 memory; it will not operate in consumer desktop boards designed for UDIMMs, and DDR5 modules cannot be mixed with DDR4 regardless of physical fit.
- Within Micron’s DDR5 RDIMM portfolio, this is the dual-rank (2Rx4) 64GB variant at 6400 MT/s — dual-rank modules typically interleave better under heavy memory pressure than single-rank equivalents, which suits virtualization hosts and cache-tier workloads.
- For maximum effective bandwidth on a given CPU, populate all supported memory channels with matched modules of the same speed grade and rank configuration; mixed population can cause the platform to fall back to a lower data rate, so verify channel population rules in your server’s memory configuration guide.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
