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Green 288-pin DDR4 RDIMM module with black chips and gold contacts

SAMSUNG

SAMSUNG M393A8K40B21-CTC 64GB DDR4-2400 LP ECC TSV RDIMM

SKU CH-A21T-ZT1GF

64 GB DDR4-2400 registered ECC server module with TSV technology and low-profile design

  • Total capacity64 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4
  • Product type288-Pin DDR4 SDRAM
  • 64 GB capacity supports large server workloads
  • DDR4-2400 speed delivers 19200 MT/s data rate
  • ECC and registered design protects data integrity
  • 4Rx4 TSV stacking enables high density in low-profile form
  • 20 V operation reduces power draw per module

Samsung 64 GB DDR4-2400 Registered ECC Module

This 64 GB DDR4-2400 LP ECC TSV RDIMM is built for servers and workstations that require registered, error-correcting memory. The 4Rx4 organisation and low-profile height suit dense multi-DIMM configurations. It operates at 1.20 V and carries Supermicro certification for validated compatibility.

Compatibility Check Before Ordering

Verify that your motherboard supports 288-pin DDR4 registered ECC RDIMMs at 2400 MT/s and can address 4Rx4 modules. Confirm the platform accepts 1.20 V operation and that the BIOS recognises TSV stacking. Systems limited to unbuffered UDIMMs or lower rank counts will not work with this module.

Thermals Noise and Power Draw

Low 1.20 V voltage reduces power consumption per module compared with higher-voltage DDR4 variants. The registered buffer adds negligible latency while improving signal integrity in fully populated channels. Passive cooling in normal server airflow keeps temperatures within specification without audible fan noise from the memory itself.

How it compares

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

Price $192.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $3.02 per GB
Cheaper than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Total capacity64 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Power
Rated voltage1.2 V

Questions about this item

Does the single 64GB DDR4-2400 LP ECC TSV RDIMM ship alone, or are extra parts required?

The module arrives as one 288-pin registered DIMM; no additional components are needed for installation.

When would I pick this 4Rx4 64GB stick instead of a lower-capacity or dual-rank alternative?

Choose it when the server board supports 4Rx4 registered ECC and you need maximum density per slot at 2400 MT/s.

What does the 2400 MT/s rating deliver once the RDIMM is seated in a compatible system?

It provides a peak transfer rate of PC4-19200 bandwidth at the standard 1.20 V DDR4 voltage.

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