A-Tech
A-Tech 8GB (2x4GB) RAM Replacement for CT2K4G4DFS8266 | DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 UDIMM 1Rx8 1.2V Non-ECC DIMM 288-Pin Desktop Memory Modules
Available Styles / Variations:
Limited Entry-Level Capacity
Validated by C.R. Vinoth Kumar ยท Founder & Senior Editor
8GB of total memory is extremely marginal in 2026. Windows 11 uses 3-4GB at idle, leaving very little headroom for multitasking or gaming. We highly recommend upgrading to at least 16GB, or 32GB to prevent page-file stutters.
Current price
$80.04$10.01/GBAs of May 30, 2026 ยท Verify on Amazon ยท Price subject to change
$/GB vs DDR4 market avg
Near avgDeal score
66/100
At $10.01/GB โ DDR4 market rate.
Buy on AmazonLoad alertsVerify Alternative Stores
Our systems refresh prices daily from Amazon.com to secure the absolute lowest USD market rate. You can cross-reference this RAM kit (ASIN: B09CQF4PWB) against alternative marketplaces like Newegg or Crucial before buying.
Product 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. As an Amazon Associate we earn from qualifying purchases.
At a Glance
Strengths
- Compatible with 4 CPU platforms
Limitations
- Limited review data โ only 1 Amazon reviews
- Limited price history โ recently added to tracking, trends not yet available
- Availability unconfirmed โ may be out of stock or delisted
All points are derived from price data, customer ratings, and product specifications โ not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 8GB (2x4) DDR4 DIMM specifications.
8GB is below the 16GB minimum recommended for gaming in 2026
8GB handles basic office tasks โ may slow with many tabs or large spreadsheets
8GB is insufficient for video editing or 3D rendering workloads
Non-ECC RAM is not recommended for servers or NAS โ silent data corruption risk without error correction
This is a desktop DIMM โ laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications โ not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily โ track price trends over time
Current
$80.04
37d Low
$80.04
37d High
$80.04
37d Avg
$80.04
Speed Ranking
Top 46%
2666MHz ranks in the top 46% of all DDR4 speeds tracked (1,546 modules).
Z-Score Deviation
Fair / Average Price
Deviation: 1.00ฯ
This product is currently priced within normal historical margins.
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) ยท guide | DDR4 |
CapacityTotal kit memory size ยท guide | 8GB (2x4) |
| Kit Config | โ 2ร kit โ dual-channel ready |
SpeedFrequency in MT/s or MHz ยท guide | 2666MHz |
CAS LatencyClock cycles response delay ยท guide | CL19 |
True LatencyAbsolute nanosecond latency | 14.25 ns(High latency)= (19 ร 2000) รท 2666 |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | DIMM |
ASIN | B09CQF4PWB |
Spotted a wrong price or spec? Report a data correction ยท How we verify data
Compatible Platforms
Always verify with your motherboard's QVL before purchasing.
Platform Pairing Guide
How well 2666MHz performs on each platform โ based on memory controller characteristics and manufacturer guidance.
| Platform | Benefit |
|---|---|
| AMD AM4 (Ryzen 1000โ5000) | โ Good |
| Intel LGA1200 (10th/11th gen) | โ Optimal |
| Intel LGA1700 DDR4 (12thโ14th gen) | โ Good |
Platform guidance based on AMD and Intel official specifications and independent testing. Always verify compatibility with your specific motherboard's QVL.
Motherboard Compatibility
Most popular DDR4 boards per platform
ASUS TUF Gaming B550-Plus WiFi II / MSI MAG B550 Tomahawk
B550 is the top AM4 chipset. DDR4-3600 CL16 is the sweet spot.
Gigabyte B760M D2H DDR4 / ASUS Prime B760M-A D4
B760 DDR4 boards support 12thโ14th Gen Intel with DDR4.
ASUS Prime B560M-A / MSI MAG B560 Tomahawk WiFi
DDR4-3200 is the official LGA1200 maximum โ ideal match.
Always verify with your board's QVL before purchasing.
Cheaper Alternatives
Same 8GB DDR4 โ lower $/GB than this product
Timetec
Timetec 8GB DDR4 2666MHz (PC4-2666V) PC4-21300 UDIMM Desktop RAM รขโฌโ 288-Pin 1.2V CL19 Non-ECC Unbuffered DIMM Memory Module Upgrade28% cheaper/GB
26% cheaper/GB
Ranked by lowest $/GB. Same 8GB DDR4 DIMM only. Prices updated daily.
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GBThis product | $9.68/GB |
| 16GB | $9.70/GB |
| 32GB | $9.02/GB |
| 64GB | $8.97/GB |
| 128GB | $6.58/GB |
Upgrade Cost Calculator
How much more (or less) would you spend to step up or down in capacity? Prices shown are the cheapest available DDR4 DIMM in each tier today.
Current
8GB
$80.04$10.01/GBPrices are the lowest available in each tier from our daily database โ verify on Amazon before purchasing. Only DDR4 DIMM modules compared.
Also available from A-Tech
Same brand, different configurations
A-Tech
A-Tech 64GB (2x32GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules
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A-Tech 8GB (2x4GB) DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Modules
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A-Tech 8GB DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Module
Related pages
Frequently Asked Questions
Is the A-Tech 8GB (2x4) 2666MHz DDR4 compatible with my motherboard?
This module is compatible with Intel 11th Gen Core (LGA1200), Intel 12th / 13th / 14th Gen (LGA1700), Intel Core X / Skylake-X (LGA2066 / X299), AMD Ryzen 1000โ5000 (AM4). 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 $80.04 ($10.01/GB), this module is priced near the DDR4 market average. Check the price history chart above to see if prices have been trending up or down recently.
What is 2666MHz RAM used for?
DDR4 RAM is used in Intel LGA1200/LGA1700 and AMD AM4 (Ryzen 1000-5000) systems. It offers excellent value for existing platforms. 2666MHz is a standard DDR4 speed tier.
How does A-Tech RAM compare to other brands?
A-Tech has 283 modules tracked with an average customer rating of 4.6โ . This specific module is 3% below the overall DDR4 market average $/GB. Browse all A-Tech modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Is 16GB of RAM enough for gaming in 2026?
8GB is below the 16GB minimum recommended for gaming in 2026. Most modern AAA titles require 12โ16GB. Consider upgrading to at least 16GB for a smooth gaming experience.
What is the difference between a single 8GB stick and a 2ร4GB kit?
This is already a 2ร4GB dual-channel kit โ the correct configuration for maximum performance. Dual-channel mode doubles the memory bandwidth by using both memory channels simultaneously, improving performance in games and applications by 10โ30% compared to a single stick of the same total capacity.
Similar DDR4 RAM
A-Tech
A-Tech 8GB (2x4GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Modules
A-Tech
A-Tech 8GB (2x4GB) DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Modules
8GB (2x4GB) DDR4 2133 MHz UDIMM PC4-17000 (PC4-2133P) CL15 DIMM Non-ECC Desktop RAM Memory Modules
Expertly Curated by C.R. Vinoth Kumar
Lead Hardware AnalystC.R. Vinoth Kumar is a senior systems systems engineer and memory hardware architect with over 12 years of experience benchmarking computer components, building performance virtualization servers, and assembling local LLM inference rigs. Every memory module tracked in our database is mathematically checked using custom telemetry to isolate nanosecond CAS latency bounds, price-per-gigabyte market averages, and Ryzen/Intel platform pairings.
As an Amazon Associate we earn from qualifying purchases. Prices are updated daily and may change on Amazon.