Corsair CMSO16GX4M2A2133C15 Value Select 16 GB DDR4 Up to 2133 MHz CL 15 260 Pin vs Crucial RAM CT8G4DFRA266 8GB DDR4 2666 MHz CL19 Desktop Memory
Updated August 2026 — The Corsair CMSO16GX4M2A2133C15 offers higher capacity and potential for overclocking, while the Crucial RAM CT8G4DFRA266 provides better speed and efficiency at a lower price.
The Corsair CMSO16GX4M2A2133C15 offers higher capacity and potential for overclocking, while the Crucial RAM CT8G4DFRA266 provides better speed and efficiency at a lower price.
Why Corsair CMSO16GX4M2A2133C15 Value Select 16 GB DDR4 Up to 2133 MHz CL 15 260 Pin is better
higher capacity
Corsair offers 16 GB compared to Crucial's 8 GB
overclocking potential
Corsair can achieve higher speeds with adjustments
brand reputation
Corsair is favored by gamers and enthusiasts
Why Crucial RAM CT8G4DFRA266 8GB DDR4 2666 MHz CL19 Desktop Memory is better
lower price
Crucial is priced at £75.93
higher speed
Crucial operates at 2666 MHz
power efficiency
Crucial reduces power consumption by up to 40%
Overall score
Specifications
| Spec | Corsair CMSO16GX4M2A2133C15 Value Select 16 GB DDR4 Up to 2133 MHz CL 15 260 Pin | Crucial RAM CT8G4DFRA266 8GB DDR4 2666 MHz CL19 Desktop Memory |
|---|---|---|
| Memory Size | 16 GB | 8 GB |
| Speed | 2133 MHz | 2666 MHz |
| CAS Latency | 15 | 19 |
| Voltage | 1.2V | 1.2V |
| Price | £126.78 | £75.93 |
Dimension comparison
Overview of Corsair CMSO16GX4M2A2133C15 Value Select and Crucial RAM CT8G4DFRA266
When considering memory upgrades, the Corsair CMSO16GX4M2A2133C15 Value Select and Crucial RAM CT8G4DFRA266 present two distinct offerings. The Corsair module provides a generous 16 GB capacity, whereas the Crucial option offers 8 GB. This difference in capacity is a crucial factor for users who require more memory for demanding applications. The Corsair model is priced at £126.78, while the Crucial RAM is more budget-friendly at £75.93.
Performance Specifications
In terms of performance, the Corsair CMSO16GX4M2A2133C15 operates at a speed of up to 2133 MHz with a CAS latency of 15. The Crucial RAM, on the other hand, boasts a higher speed of 2666 MHz but has a greater CAS latency of 19. Users with systems capable of benefitting from the higher bandwidth may find the Crucial RAM advantageous, especially for tasks that require rapid data access. However, it is important to note that the maximum speed of the Corsair module can be achieved with overclocking and specific BIOS adjustments, which may appeal to enthusiasts looking for optimised performance.
Power Efficiency
Power consumption is a significant consideration for many users, especially those building energy-efficient systems. The Corsair CMSO16GX4M2A2133C15 operates at 1.2V, which is standard for DDR4 memory. The Crucial RAM also features improved power efficiency, reducing consumption by up to 40% compared to older memory technologies. This characteristic makes the Crucial RAM a strong candidate for users looking to build a system with lower power demands and improved thermal performance.
Compatibility and Optimisation
Compatibility with newer systems is essential when selecting RAM. The Crucial RAM is optimised for next-generation processors and platforms, which could provide a smoother experience when paired with modern hardware. The Corsair CMSO16GX4M2A2133C15, while also compatible with a range of systems, may require additional configurations to reach its maximum performance levels. Users should verify compatibility with their motherboards and CPUs before making a purchase, especially if they aim to take advantage of the overclocking potential of the Corsair module.
Bandwidth and Data Rates
Bandwidth is a critical factor in determining the overall performance of memory. The Crucial RAM claims to increase bandwidth by up to 32%, which can significantly enhance performance in memory-intensive applications. In contrast, while the Corsair's lower speed may limit its bandwidth, it still offers substantial performance for everyday tasks. For users engaged in gaming, video editing, or other demanding applications, the higher bandwidth of the Crucial RAM may provide noticeable benefits, making it a worthy consideration for those particular use cases.
Price Comparison
Price is often a deciding factor for consumers, and in this case, the Crucial RAM offers a more affordable option at £75.93 compared to the Corsair CMSO16GX4M2A2133C15, priced at £126.78. For users on a budget or those who do not require the higher capacity and potential overclocking performance of the Corsair module, the Crucial RAM presents a cost-effective solution. However, the additional capacity of the Corsair may justify its higher price for users who need more memory for multitasking or resource-heavy applications.
User Experience and Brand Reputation
Both Corsair and Crucial are well-regarded brands in the memory market, known for producing reliable and high-quality products. Corsair is often favoured by gamers and enthusiasts for its performance-oriented designs and overclocking capabilities. Crucial, on the other hand, has built a reputation for delivering consistent performance and value, making it a popular choice among mainstream users. The user experience may vary depending on the specific needs of the consumer, but both brands offer solid options that cater to a diverse range of users.
Which should you buy?
Deciding between the Corsair CMSO16GX4M2A2133C15 Value Select and the Crucial RAM CT8G4DFRA266 ultimately hinges on your specific requirements. If you need higher capacity and the potential for overclocking, the Corsair module is the better option despite its higher price. Conversely, if you are looking for a more affordable solution with decent performance and energy efficiency, the Crucial RAM is an excellent choice. Consider your budget and usage needs carefully before making your decision, as both products have their strengths and cater to different types of users.
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