Crucial 32GB (2x16GB) PC4-21300 (DDR4-2666) Memory 2x CT16G4DFD8266 Desktop RAM

For sale is a 32GB (2 × 16GB) pair of genuine Crucial DDR4-2666 desktop memory modules in excellent working condition.

Both modules feature the same Crucial base model number (CT16G4DFD8266), identical capacity, speed, voltage, and CL19 latency, with different manufacturing revisions.

The memory modules have been professionally tested together in a Windows desktop computer, successfully recognized as 32GB running at 2666 MHz, and verified using Windows Memory Diagnostic.

Windows Memory Diagnostic completed successfully with no memory errors detected, confirmed through Windows Event Viewer (MemoryDiagnostics-Results, Event ID 1201).

The actual memory modules are shown in the photos for complete transparency and buyer confidence.

✅ Key Specs

• Brand: Crucial by Micron

• Base Model Number: CT16G4DFD8266

• Total Capacity: 32GB

• Configuration: 2 × 16GB

• Memory Type: DDR4 SDRAM

• Memory Speed: 2666 MT/s (DDR4-2666)

• PC Rating: PC4-21300

• CAS Latency: CL19

• Form Factor: 288-Pin UDIMM

• Voltage: 1.2V

• ECC: Unbuffered

• Application: Desktop Computers

Individual Module Details:

• Module 1: CT16G4DFD8266.C16FN – 16GB DDR4-2666 CL19 – Manufactured in Malaysia (2017)

• Module 2: CT16G4DFD8266.C16FD1 – 16GB DDR4-2666 CL19 – Assembled in Mexico (2019)

Both modules have the same base model and operating specifications but different manufacturing revisions.

🧪 Testing & Verification

Both memory modules were installed and tested together in the same Windows desktop computer.

✔ 32GB total memory successfully detected
✔ Both memory modules recognized
✔ Operating at 2666 MHz
✔ Windows successfully booted with both modules installed
✔ Windows Memory Diagnostic completed with no errors detected
✔ Results verified in Windows Event Viewer – Event ID 1201
✔ No memory errors reported during diagnostic testing

Verified Windows Diagnostic Result:

"The Windows Memory Diagnostic tested the computer's memory and detected no errors."

Testing was performed with both modules installed together to verify their operation as a 32GB memory pair.

⚡ Why Buy This Crucial 32GB Memory Pair?

✔ 32GB total memory capacity
✔ Two genuine Crucial 16GB DDR4 modules
✔ Tested together at 2666 MHz
✔ Passed Windows Memory Diagnostic with no errors
✔ Same Crucial base model number
✔ Identical speed, voltage, and CAS latency
✔ Excellent for multitasking and productivity
✔ Reliable OEM-quality memory from Crucial by Micron
✔ Great upgrade for compatible desktop computers

💼 Ideal For

✔ Dell OptiPlex desktops
✔ HP EliteDesk and ProDesk desktops
✔ Lenovo ThinkCentre desktops
✔ Business and office computers
✔ Home desktop computers
✔ Compatible workstations
✔ Multitasking and productivity applications
✔ System builders and IT professionals

Compatibility depends on the specific computer model, processor, and motherboard.

🛠️ Condition

Used – Excellent Working Condition

These genuine Crucial DDR4 memory modules are in good overall physical condition and may show minor cosmetic signs of normal handling or previous installation.

Both modules were installed and tested together in a Windows desktop computer.

Windows successfully recognized 32GB of installed memory running at 2666 MHz.

The pair also passed Windows Memory Diagnostic with no errors detected, as confirmed by the Windows Event Viewer diagnostic result.

Important: These are two Crucial modules with the same base model number and specifications but different manufacturing revisions. They are being sold together as a tested 32GB pair, not as a factory-packaged matched kit.

Please review the actual item photos for exact cosmetic condition.

⚠️ Compatibility

Compatible with desktop computers supporting DDR4 288-pin UDIMM, Non-ECC, Unbuffered memory.

Please verify that your motherboard or computer supports:

✔ DDR4 desktop UDIMM memory
✔ 16GB capacity per memory slot
✔ 32GB total memory configuration
✔ DDR4-2666 memory or compatible operating speeds

Actual operating speed may vary depending on the motherboard, processor, BIOS configuration, and installed memory.

Not compatible with laptop SO-DIMM slots or systems requiring registered server memory.

📦 Included

2 × Genuine Crucial 16GB DDR4-2666 CL19 Desktop RAM Modules

Total Capacity: 32GB

• 1 × CT16G4DFD8266.C16FN

• 1 × the two memory modules shown in the listing photos are included.

  🚚 Shipping

  Ships same day or next business day.

  💬 Buy with Confidence

  You will receive the exact memory modules shown in the photos.

  Both Crucial memory modules have been tested together, successfully recognized as 32GB running at 2666 MHz, and verified through Windows Memory Diagnostic.

  They are offered as a tested and working 32GB memory pair.

  ♻️ Professionally Tested • Sustainably Reused

  Every item is carefully inspected, tested, cleaned, and quality-checked before shipment. Only hardware that meets our standards for reliability and performance is offered for sale.

  Choosing professionally reused technology helps extend the life of quality computer hardware, reduces electronic waste, and supports a more sustainable future.

  Thank you for supporting responsible technology reuse.

  J-1