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Green rectangular DDR5 RDIMM module with black memory chips and gold contacts

Crucial

Crucial MTC20F208XS1RC64BC1R 48 GB DDR5-6400 CL52 ECC RDIMM server RAM

SKU CH-FHQ7-GBP5Q MPN MTC20F208XS1RC64BC1R

48 GB DDR5-6400 ECC RDIMM module with CL52 latency and registered signal processing for server reliability

  • Total capacity48 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Product type288-Pin DDR5 RDIMM
  • High capacity 48 GB module supports memory-intensive server workloads
  • DDR5 6400 MT/s speed delivers high bandwidth for demanding applications
  • ECC and registered design protects data integrity in critical environments
  • Low 1.10 V operation reduces power draw per module
  • Standard 288-pin RDIMM form factor fits compatible server platforms

48 GB DDR5-6400 ECC RDIMM

This registered DDR5 module delivers 48 GB at 6400 MHz with CL52 latency and ECC protection. It operates at 1.1 V and uses the standard 288-pin RDIMM form factor for server platforms.

Registered signal with ECC for data integrity

The module combines registered signal processing with error-correcting code to reduce electrical load on the memory controller and detect single-bit errors. Dual-rank organisation supports the stated 6400 MHz transfer rate.

Suited for servers needing registered ECC memory

Builders requiring unbuffered UDIMMs, non-ECC modules, lower capacities or different speeds should select alternative parts. This unit is a single 48 GB stick for DDR5 RDIMM slots only.

How it compares

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

Price $1,774.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 48 GB
Higher than about 65% of the 6,064 comparable items (median 32 GB).
Price per GB $36.98 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameCrucial
Model nameMTC20F208XS1RC64BC1R
Part numberMTC20F208XS1RC64BC1R
Total capacity48 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Memory
CAS latencyCL52
ECC supportYes
Power
Rated voltage1.1 V
Size & build
Shipping weight0.11 kg
Package size152 × 102 × 25 mm

Questions about this item

How does the 6400 MHz speed translate to actual throughput in a server board?

The module runs at DDR5-6400, giving a peak transfer rate of PC5-51200 once the memory controller is configured for that speed.

What does the registered DDR5 interface mean for signal integrity and capacity limits?

Registered signal processing buffers commands, reducing electrical load on the memory controller so larger capacities like this 48 GB module can be used reliably.

Will the 288-pin RDIMM fit in a standard server DIMM slot?

Yes, the 288-pin DDR5 RDIMM form factor matches the keyed slot used in current server platforms that support DDR5 registered memory.

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