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Green rectangular DDR5 RDIMM module with black memory chips and gold edge connectors

Micron Technology, Inc.

Micron Technology, Inc. MTC20F1045S1RC56BD2R DDR5 RDIMM 32GB 5600 CL46 server RAM

SKU CH-79RM-XPTYQ MPN MTC20F1045S1RC56BD2R

32 GB DDR5 RDIMM runs at 5600 MHz with CL46 latency for server workloads

  • DDR5 technology enables 5600 MHz data rates for responsive server workloads
  • 32 GB capacity in a single module supports dense memory configurations
  • Registered RDIMM form factor provides signal integrity for multi-DIMM platforms
  • CL46 latency timing balances speed and stability in enterprise environments
  • 16 Gbit DRAM density underpins the 32 GB capacity per module

What this module is and who it fits

Micron MTC20F1045S1RC56BD2R is a 32 GB DDR5 RDIMM rated at 5600 MHz with CL46 latency. It targets servers and workstations that require registered ECC memory for data integrity.

Practical limits of DDR5 RDIMM at 5600 MT/s

The 5600 MT/s speed is the JEDEC base rate for this generation; actual throughput depends on the platform's memory controller and the number of populated slots. Populating multiple channels or ranks can force the controller to downclock below the rated 5600 MT/s.

Installation notes and common issues

The module installs in a standard 288-pin DDR5 RDIMM slot and is keyed to prevent misalignment. Common issues include mixing RDIMMs with UDIMMs or LRDIMMs, which prevents boot, and failing to enable ECC in the system BIOS after installation.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $2,047.99
Pricier than about 87% of the 6,523 comparable items (median $188.99).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Size & build
Shipping weight0.05 kg
Package size178 × 57 × 10 mm

Questions about this item

Should I pick the 1Rx4 32 GB module or look for a different rank and capacity?

This module is a single 32 GB 1Rx4 stick; choose it when you need one rank per channel and 32 GB per slot.

What does the 5600 MHz rating deliver once the DIMM is installed in a server?

The DIMM runs at 5600 MT/s, providing that peak transfer rate when the platform supports DDR5-5600.

Does the DDR5 RDIMM interface impose any practical limits on speed or capacity?

The DDR5 RDIMM form factor supports the rated 5600 MT/s and 32 GB density on compatible server platforms.

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