Micron 64GB DDR5-6400 ECC RDIMM 2Rx4 — MTC20F2085S1RC64BH1

The Micron MTC20F2085S1RC64BH1 is a 64GB DDR5-6400 ECC Registered DIMM (RDIMM) operating at 6400MHz (PC5-51200) with CL52 latency at 1.1V in Dual Rank x4 configuration. Part of the MTC20F family it delivers high-speed DDR5-6400 ECC registered server memory for 5th Gen Intel Xeon Scalable and AMD EPYC platforms requiring maximum DDR5 bandwidth at 64GB per slot.

Key Features

• 64GB capacity — DDR5-6400 ECC RDIMM 2Rx4
• DDR5-6400 (PC5-51200) — highest standard DDR5 server speed tier
• ECC Registered — register buffer for enterprise server reliability
• Dual Rank x4 (2Rx4)
• Genuine Micron server memory

Product Specifications

• Part Number: MTC20F2085S1RC64BH1
• Manufacturer: Micron
• Capacity: 64GB
• Type: DDR5 ECC RDIMM
• Speed: 6400MHz (PC5-51200)
• CAS Latency: CL52
• Voltage: 1.1V
• Ranks x Width: 2Rx4
• Pins: 288-pin

Memory Specifications

• Bandwidth: PC5-51200 (51.2 GB/s theoretical)
• On-Die ECC: Yes (DDR5 standard)
• RAS Features: ECC, registered buffer

Use Cases

• 5th Gen Intel Xeon Scalable and AMD EPYC DDR5-6400 platforms requiring 64GB per slot
• HPC and AI/ML workloads requiring maximum DDR5 bandwidth
• In-memory database and analytics requiring high-speed 64GB DDR5 RDIMMs
• Virtualization hosts requiring DDR5-6400 at 64GB per DIMM

Compatibility

• DDR5 RDIMM slots on Intel Xeon Scalable (LGA4677) servers supporting DDR5-6400
• AMD EPYC (SP5) DDR5-6400 server platforms
• Not compatible with DDR4 slots or consumer DDR5 platforms
• Verify server QVL before installation

Frequently Asked Questions

What is the difference between MTC20F2085S1RC64BH1 and MTC40F2046S1RC64BH1?

Both are 64GB DDR5-6400 ECC RDIMM 2Rx4. MTC20F and MTC40F indicate different module PCB/component configurations — verify your server QVL to confirm which variant is qualified for your platform.

What is the difference between DDR5-6400 and DDR5-5600?

DDR5-6400 (PC5-51200) provides approximately 14% higher bandwidth than DDR5-5600 (PC5-44800). DDR5-6400 requires server platform support — verify your server”s maximum supported DDR5 speed.

What does 2Rx4 mean?

Dual Rank x4 — two ranks of x4 (4-bit wide) DRAM devices providing higher capacity and bandwidth per DIMM.

The Micron MTC20F2085S1RC64BH1 delivers 64GB DDR5-6400 ECC RDIMM in 2Rx4 configuration for Intel Xeon Scalable and AMD EPYC DDR5-6400 server platforms requiring maximum bandwidth at 64GB per slot.