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Green 288-pin DDR5 RDIMM module, 48 GB, registered, silver heatsink, gold contacts

Crucial

Crucial MTC20F208XS1RC56BB1R 48GB DDR5 5600 CL46 registered server RAM

SKU CH-B9DE-73SEP MPN MTC20F208XS1RC56BB1R

48GB DDR5 5600 CL46 registered 288-pin DIMM with ECC for server memory expansion

  • Total capacity48 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • Rated voltage1.1 V/(12 V ext)
  • ECC support(Single)
  • Product type288-Pin DDR4 RDIMM
  • 48 GB capacity supports large server workloads
  • DDR5 5600 speed delivers 44800 MT/s data rate
  • CL46 latency balances timing with high frequency
  • Registered design adds signal integrity for multi-DIMM configs
  • 1 V operation reduces power draw per module

Capacity and Architecture

This 48GB DDR5 registered DIMM operates at 5600 MHz with CL46 latency. It uses a 288-pin form factor and runs at 1.1V with an external 12V supply. The module includes single ECC for error correction and is built for server platforms that require registered memory.

Registered ECC for Multi-Socket Servers

This module suits administrators expanding memory in registered DDR5 servers that support 48GB densities and CL46 timing. It is not for desktop PCs or workstations that accept only unbuffered UDIMMs. Builders needing non-ECC memory or lower latency kits should look elsewhere.

DDR5 5600 CL46 Registered Specification

The decisive specification is the DDR5 5600 CL46 registered profile with single ECC. The motherboard and CPU memory controller must explicitly support registered DDR5 at this speed and latency. Verify the qualified vendor list before purchase.

How it compares

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

Price $504.99
Pricier than about 71% 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 $10.52 per GB
Pricier than about 70% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameMicron
Part numberMTC20F208XS1RC56BB1R
Total capacity48 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
ECC support(Single)
Power
Rated voltage1.1 V/(12 V ext)
Size & build
Shipping weight0.08 kg
Package size25 × 25 × 25 mm

Questions about this item

Should I choose the 48 GB module or add multiple sticks for my server?

Each module provides 48 GB of registered DDR5 memory. Populate slots according to your motherboard's maximum capacity and channel guidelines to reach the desired total.

What does the CL46 latency mean for real-world server workloads?

CL46 indicates 46 clock cycles at 5600 MHz. Lower latency improves response time for database and virtualization tasks, while the registered design helps maintain signal integrity at scale.

Does the DDR5 5600 PC5-44800 rating limit bandwidth on my platform?

The module is rated for DDR5 5600 (PC5-44800). Actual throughput depends on the memory controller and number of populated channels in your specific server board.

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