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Green rectangular DDR5 RDIMM module with gold contacts and black chips

Micron Technology, Inc.

Micron Technology, Inc. MTC20F2085S1RC64BR server RAM DDR5 128GB 2Rx4 6400 CL52 288-pin RDIMM

SKU CH-SHHD-ZGHP9 MPN MTC20F2085S1RC64BR

A 128 GB DDR5 registered DIMM running at 6400 MT/s with CL52 latency for high-capacity server workloads

  • 128 GB capacity supports large virtualised workloads
  • 6400 MT/s DDR5 speed delivers high memory bandwidth
  • 2Rx4 dual-rank organisation improves channel utilisation
  • Registered RDIMM design adds signal integrity for servers
  • CL52 latency balances timing with 6400 MT/s operation

High-density DDR5 RDIMM

This 128 GB registered DIMM uses DDR5 technology at 6400 MT/s with a CL52 latency profile. It is built for servers and workstations that require large memory footprints in a single module. The dual-rank 2Rx4 organisation and x4 chip density support high-capacity configurations.

Registered DDR5 limits

The RDIMM form factor adds a register that buffers address and command signals, which helps signal integrity at high density but prevents use in platforms that accept only unbuffered UDIMMs. Speed is rated at PC5-51200 and the module operates at the standard DDR5 voltage defined for that data rate. Mixing ranks or speeds may reduce the effective transfer rate.

288-pin installation notes

The 288-pin connector keys only one way into a DDR5 RDIMM slot; align the notch before applying even pressure until the latches click. Common issues include seating the module incompletely, populating slots in the wrong order for the platform's memory topology, or enabling a data rate the CPU memory controller does not support.

Points forts

  • 128 GB capacity supports large virtualised workloads
  • 6400 MT/s DDR5 speed delivers high memory bandwidth
  • 2Rx4 dual-rank organisation improves channel utilisation
  • Registered RDIMM design adds signal integrity for servers
  • CL52 latency balances timing with 6400 MT/s operation

Caractéristiques

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Questions sur cet article

Should I choose the 128GB 2Rx4 module or a lower-capacity option for my server?

The 128GB 2Rx4 module provides maximum capacity per slot using 32Gb DRAM density, ideal when slot count is limited and high density is required.

What does the 6400 MT/s rating deliver once installed in a live server?

At 6400 MT/s the module runs at PC5-51200 data rate, giving higher bandwidth than slower DDR5 grades when the platform and memory controller support that speed.

How does the 288-pin RDIMM interface and registered design affect real-world use?

The 288-pin RDIMM form factor with registered buffering allows the memory controller to drive heavier loads, enabling the 128GB dual-rank capacity on compatible server platforms.

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