Crucial
A-Tech 8GB RAM Replacement for Crucial CT8G4SFRA266.C4 | DDR4 2666MHz PC4-21300 SODIMM 1Rx16 1.2V 260-Pin Non-ECC Laptop Memory Module (CT8G4SFRA266.C4-ATC)
Current price
$67.99
$8.50/GB
As of Apr 14, 2026 · Verify on Amazon · Price subject to change
vs avg $/GB
16% cheaper
Deal score
65/100
At $8.50/GB — 16% below the DDR4 market average.
Buy on AmazonProduct prices and availability are accurate as of the date of the last daily update and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Affiliate link.
At a Glance
Strengths
- +16% below the overall DDR4 market average $/GB
- +Limited Lifetime Warranty from Crucial
Limitations
- −No customer reviews available yet on Amazon
- −Limited price history — recently added to tracking, trends not yet available
- −Single-stick configuration — runs in single-channel mode unless paired with another stick
All points are derived from price data, customer ratings, and product specifications — not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 8GB DDR4 ECC SO-DIMM specifications.
Laptop RAM — suitable for gaming laptops with compatible slots
8GB handles basic office tasks — may slow with many tabs open
ECC RAM protects long renders from silent data corruption — ideal for professional workstations
ECC RAM detects and corrects memory errors — required for data-critical servers and ZFS storage
SO-DIMM form factor — correct type for laptop memory upgrades. Verify your laptop has an accessible slot.
Verdicts based on capacity, form factor, and ECC specifications — not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily — track price trends over time
Speed Ranking
Top 46%
2666MHz ranks in the top 46% of all DDR4 speeds tracked (1,762 modules).
Specifications
| Memory Type | DDR4 |
| Capacity | 8GB |
| Speed | 2666MHz |
| Form Factor | SO-DIMM |
| ECC | Yes |
| Voltage | 1.2V |
| ASIN | B0DF3VTMDG |
Compatible Platforms
Always verify with your motherboard's QVL before purchasing.
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GBThis product | $9.97/GB |
| 16GB | $9.79/GB |
| 32GB | $9.33/GB |
| 64GB | $9.33/GB |
| 128GB | $8.96/GB |
Also available from Crucial
Same brand, different configurations
Crucial
Crucial 32GB DDR4 RAM Kit (2x16GB), 3200MHz (PC4-25600) CL22 Laptop Memory, SODIMM 260-Pin, Downclockable to 2933/2666MHz, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT2K16G4SFRA32A
Crucial
Crucial 16GB DDR4 RAM, 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory, SODIMM 260-Pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT16G4SFRA32A
Crucial
Crucial 8GB DDR4 RAM 3200MHz (PC4-25600), Downclockable to 2933/2666MHz Laptop Memory, SODIMM 260-Pin CL22, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT8G4SFRA32A
Frequently Asked Questions
Is the Crucial 8GB 2666MHz DDR4 compatible with my motherboard?
This module is compatible with Laptop — DDR4 SO-DIMM. Always verify with your motherboard's QVL (Qualified Vendor List) before purchasing, as compatibility can vary by board revision.
Is this DDR4 module a good deal right now?
At $8.50/GB, this module is 16% below the overall DDR4 market average $/GB across all capacities. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is 2666MHz RAM used for?
This is an ECC (Error-Correcting Code) RAM module designed for servers, workstations, and NAS systems where data integrity is critical. ECC RAM detects and corrects single-bit memory errors automatically. It requires a compatible CPU and motherboard — most consumer platforms do not support ECC. See our ECC RAM guide for platform compatibility details.
How does Crucial RAM compare to other brands?
Crucial has 127 modules tracked with an average customer rating of 4.6★. This specific module is 16% below the overall DDR4 market average $/GB. Browse all Crucial modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Similar DDR4 RAM
HyperX
8GB DDR4 3200MHz (PC4-3200AA) PC4-25600 SODIMM Laptop RAM – 260-Pin 1.2V CL22 Non-ECC Unbuffered Memory Module for Laptop, Notebook, Mini PC, All-in-One
Timetec
Timetec Premium 8GB DDR4 3200MHz (PC4-3200AA) PC4-25600 SODIMM Laptop RAM – 260-Pin 1.2V CL22 Non-ECC Unbuffered Memory Module for Laptop, Notebook, Mini PC, All-in-One
Timetec
Timetec 8GB DDR4 2666MHz (PC4-2666V) PC4-21300 SODIMM Laptop RAM – 260-Pin 1.2V CL19 Non-ECC Unbuffered Memory Module for Laptop, Notebook, Mini PC, All-in-One