Micron

Micron 64GB DDR5-5600 ECC RDIMM

MTC40F2046S1RC56BD2
Micron DDR5 RDIMMcompute64GBDDR5-5600RDIMM
$46.14/GB
$2,952.99
newIn Stock
This offer: sold by nvtek · Amazon says New / Unknown
Prices refresh about once a day
Price updated
Price accurate as of Oct 19, 2026, 02:19 AM
Buy on Amazon

The Micron 64GB DDR5-5600 ECC RDIMM is a 64GB DDR5 ECC server memory module in new condition. It is in stock at $2,952.99 - $46.14/GB.

Same capacity, other options
DriveInterfaceCond$/TBPrice
SK Hynix 64GB DDR4-2400 ECC RDIMMDDR4-2400Refurb$5039.20$314.95Buy on Amazon
Supermicro 64GB DDR4-2666 ECC LRDIMMDDR4-2666New$6384.00$399.00Buy on Amazon
Samsung 64GB DDR4-3200 ECC RDIMMDDR4-3200Refurb$12800.00$800.00Buy on Amazon
SK Hynix 64GB DDR4-3200 ECC RDIMMDDR4-3200New$13840.00$865.00Buy on Amazon
Model context

Part of the Micron line we track.

Quick Verdict

Micron 64GB DDR5-5600 ECC RDIMM at $46.14/GB. 3-year warranty. Verify your server's QVL before purchase.

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Specifications

Capacity64GB
Module TypeRDIMM
GenerationDDR5
Speed5600 MT/s
ECCYes
Rank / Org—
Warranty3 years
ASINB0GLQN9T6Z
Market context

Against every other module we have an in-stock price for today, this one is cheaper per gb than 5% of them (2 of 41). The cheapest we can currently buy is $4.92/GB; the middle of the market is $12.06/GB.

Compare against every 0.0625TB drive we track →Cheapest per terabyte, all categories →Category price trends →

Also appears in

Server memory
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Frequently Asked Questions

Yes. At our last check it was $2,952.99 ($47,247.84 per terabyte at its 0.0625TB capacity), sold new under ASIN B0GLQN9T6Z. Amazon sets the final price at checkout.

This listing (MTC40F2046S1RC56BD2, ASIN B0GLQN9T6Z) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new. The stored warranty on this row is 3 years, as the listing states it.

This row (ASIN B0GLQN9T6Z) is stored as a DDR5 RDIMM at DDR5-5600. A DDR5 module fits only a DDR5 platform (the keying and voltage differ by generation), and registered and unbuffered modules are not interchangeable - check your board's memory specification for DDR5 RDIMM support.

Use Case Scenarios

🖥️
Virtualization Host Density
Proxmox, ESXi or Hyper-V host packing more VMs per socket.
✓ Excellent fit
RAM is the binding constraint on VM density long before CPU. Adding 64GB ECC modules lets a host carry more guests per socket, and ECC prevents a single bit-flip from corrupting a guest's memory.
💾
ZFS ARC Cache
TrueNAS or ZFS server where read performance depends on cache hit rate.
✓ Excellent fit
ZFS turns every spare gigabyte into ARC read cache — more RAM directly raises cache hit rates on active datasets. ECC is strongly recommended for ZFS, whose integrity guarantees assume trustworthy memory.
🗄️
Database Working Set
PostgreSQL, MySQL or in-memory analytics needing the working set resident.
✓ Excellent fit
Databases live or die on buffer pool size. Fitting the working set in memory converts disk reads into RAM reads — a latency improvement no storage upgrade matches. ECC protects against silent corruption in long-running instances.
🏠
Homelab ECC Upgrade
Home server or NAS build stepping up from consumer memory.
~ Good fit
For 24/7 homelab duty, ECC server memory at today's used/refurb prices is often cheaper per GB than new consumer RAM — with error correction included. Verify your board and CPU actually support ECC before buying.

Maintenance & Troubleshooting

Maintenance Checklist

On installRun a full memtest86+ pass
Boot memtest86+ and let it complete at least one full pass before trusting the module with production data. Catches infant-mortality defects and seating problems immediately.
On installVerify detected speed and channel population
Check BIOS/IPMI that the module runs at the expected MT/s and that channels are populated per the motherboard manual's DIMM order. Uneven population silently costs bandwidth.
MonthlyReview ECC error counters
Check IPMI/iDRAC/iLO event logs, or edac-util on Linux, for corrected ECC errors. Occasional corrected errors are normal; a climbing count on one DIMM predicts failure — replace it.
AnnuallyReseat and dust during maintenance windows
Airflow debris and socket oxidation cause intermittent errors. During planned downtime, blow out slots and reseat modules showing any corrected-error history.

Troubleshooting Guide

Cause: Unsupported module type (UDIMM vs RDIMM), wrong DDR generation, or incorrect slot population order.
Fix: Confirm the platform supports this exact type and generation (check the QVL), install in the manual's specified slot order, and reseat firmly until both latches click.