Crucial
RAM 8GB DDR4 2666 MHz CL19 Desktop Memory CT8G4DFRA266
*Price sourced from Amazon.com. Last updated 2026-05-21. Price and availability subject to change.
CT8G4DFRA266 is a 8GB DDR4 desktop module that operates at speeds up to 2666 MT/s and has a CL19 latency. It is an Unbuffered UDIMM. It conforms to the industry standard DDR4 UDIMM layout of 288 pins and is compatible with systems that take DDR4 2666 MT/s UDIMM memory.
SpecPicks Verdict
SpecPicks classifies Crucial RAM 8GB DDR4 2666 MHz CL19 Desktop Memory CT8G4DFRA266 as a category leader on buyer feedback in the memory & ram category, based on 5,338 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Crucial's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ Large, well-vetted feedback pool (5,338 reviews)
- ✓ Improve your system's responsiveness, run apps faster and multitask with ease
- ✓ Backed by Crucial's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Improve your system's responsiveness, run apps faster and multitask with ease
- Install with ease; no computer skills required How-to guides available at Crucial
- Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool
- Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise
- ECC Type = Non-ECC, Form Factor = UDIMM, Pin Count = 288-pin, PC Speed = PC4-21300, Voltage = 12V, Rank and Configuration = 1Rx16, 1Rx8 or 2Rx8
Full Specifications
| Brand | Crucial |
|---|---|
| Voltage | 1.2 Volts |
| RAM Size | 8 GB |
| Model Name | Crucial Memory |
| Unit Count | 1.0 Count |
| Form Factor | 288-Pin_UDIMM |
| Memory Speed | 2666 MHz |
| Model Number | CT8G4DFRA266 |
| Compatibility | PC |
| Item Type Name | DDR4 DRAM Memory |
| Number of Pins | 288 |
| Mfr Part Number | CT8G4DFRA266 |
| Memory Generation | DDR4 |
| Compatible Devices | Desktop |
Ready to buy?
Crucial RAM 8GB DDR4 2666 MHz CL19 Desktop Memory CT8G4DFRA266 is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-21. Price and availability subject to change.
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