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Micron 128GB 6400MHz DDR5 PC5-51200 ECC Registered CL46 288-Pin DIMM 1.1V Dual Rank x4 Memory Module - MTC40F2047S1RC64BB1

Micron 128GB 6400MHz DDR5 PC5-51200 ECC Registered CL46 288-Pin DIMM 1.1V Dual Rank x4 Memory Module - MTC40F2047S1RC64BB1

Part Number: MTC40F2047S1RC64BB1
Manufacturer: Micron

Condition: New

Weight: 0.1 lbs

AvailabilityIn stock

Regular price $5,250.00
Regular price Sale price $5,250.00
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Micron 128GB DDR5-6400 ECC RDIMM 2Rx4 — MTC40F2047S1RC64BB1

The Micron MTC40F2047S1RC64BB1 is a 128GB DDR5-6400 ECC Registered DIMM (RDIMM) operating at 6400MHz (PC5-51200) with CL46 latency at 1.1V in Dual Rank x4 configuration. Combining maximum DDR5 speed with 128GB per slot capacity it delivers the highest bandwidth high-density DDR5 server memory for 5th Gen Intel Xeon Scalable and AMD EPYC platforms.

Key Features

  • 128GB capacity at DDR5-6400 — maximum density at highest standard DDR5 speed
  • DDR5-6400 (PC5-51200) — highest standard DDR5 server speed tier
  • ECC Registered — register buffer for enterprise server reliability
  • Dual Rank x4 (2Rx4)
  • Genuine Micron server memory

Product Specifications

  • Part Number: MTC40F2047S1RC64BB1
  • Manufacturer: Micron
  • Capacity: 128GB
  • Type: DDR5 ECC RDIMM
  • Speed: 6400MHz (PC5-51200)
  • CAS Latency: CL46
  • Voltage: 1.1V
  • Ranks x Width: 2Rx4
  • Pins: 288-pin

Memory Specifications

  • Bandwidth: PC5-51200 (51.2 GB/s theoretical)
  • On-Die ECC: Yes (DDR5 standard)
  • RAS Features: ECC, registered buffer

Use Cases

  • Maximum memory density builds requiring 128GB per slot at DDR5-6400
  • In-memory database and analytics requiring highest DDR5 bandwidth at 128GB per DIMM
  • AI/ML training servers requiring maximum DDR5 capacity and bandwidth per socket
  • 5th Gen Intel Xeon Scalable and AMD EPYC DDR5-6400 platforms

Compatibility

  • DDR5 RDIMM slots on Intel Xeon Scalable (LGA4677) servers supporting DDR5-6400
  • AMD EPYC (SP5) DDR5-6400 server platforms
  • Verify server QVL — 128GB DDR5-6400 requires platform qualification
  • Not compatible with DDR4 slots or consumer DDR5 platforms

Frequently Asked Questions

What is the difference between MTC40F2047S1RC64BB1 and MTC40F2047S1RC56BB2?
MTC40F2047S1RC64BB1 runs at DDR5-6400 (PC5-51200) while MTC40F2047S1RC56BB2 runs at DDR5-5600 (PC5-44800). Both are 128GB ECC RDIMM 2Rx4 — choose based on your server's supported DDR5 speed.
What is the difference between CL46 and CL52 at DDR5-6400?
CL46 at DDR5-6400 indicates lower absolute latency compared to CL52 at the same speed. MTC40F2047S1RC64BB1 at CL46 offers better latency than CL52 DDR5-6400 variants — beneficial for latency-sensitive workloads.
What does 2Rx4 mean?
Dual Rank x4 — two ranks of x4 (4-bit wide) DRAM devices providing high capacity and bandwidth per DIMM.

The Micron MTC40F2047S1RC64BB1 delivers 128GB DDR5-6400 ECC RDIMM in 2Rx4 configuration at CL46 — combining maximum DDR5 speed with 128GB per slot for Intel Xeon Scalable and AMD EPYC DDR5-6400 platforms requiring peak bandwidth and density.

Frequently Asked Questions

Why do I see an incorrect image for this item?

Product images are meant for illustrative purposes alone, and you may not always see the original image.

What do you mean by term Refurbished?

Refurbished means a used computer part or device that has been cleaned, checked, and repaired to make sure it works properly again. Unlike regular second-hand items, refurbished products go through testing and fixing so they can perform like new.

How many days does it take to ship goods to customers?

All orders are processed within 1-2 business days. Orders placed on weekends or public holidays will be processed on the next business day. For more info visit shipping policy.

What is your return policy?

Our Return Policy comprises a 30-day warranty for Refurbished products. There will be a restocking fee applied when you return non-defective returns. For further details, kindly take a look at our Return Policy page.

Do you deliver my ordered items in their original retail box?

For Brand New items, you will receive them in their original retail box. For Refurbished items, you will receive them in a Brown Box or Bulk Packaging.

Do your printers come with ink cartridges?

Refurbished printers do not come with ink cartridges or toners.