ASUS Vivobook S14 OLED S3407AA review: Stronger performance than previous version but price also increased

Celebrating the Back to School 2026 season, the ASUS VivoBook S14 code S3407AA is the focus of today's review. This is a direct upgrade compared to last year's CA generation, providing a more powerful and energy efficient device thanks to the appearance of the Intel Core Ultra Series 3 processor.

In terms of overall design, the 2026 version has almost no changes compared to 2025, from appearance to the typical dark gray color option. However, the biggest highlight and also the reason to choose this model to open the 2026 school season is the transformation from the Intel Core Ultra 200H architecture to the Core Ultra Series 3 line, and at the same time meeting the Copilot+ PC standard that the previous generation did not have.

Performance

The detailed configuration of the device includes Intel Core Ultra 7 355 processor, comes with 16GB of RAM and 512GB SSD storage space. With this configuration level, the selling price of the device will be slightly higher than last year, about 33 million VND. If you need a more attractive and accessible price, the version running Core Ultra 5 with a price ranging around 27 to 28 million VND will be a very reasonable choice.

Going deeper into the internal power, the Intel Core Ultra 7 355 chip possesses a structure of 8 P cores and 8 LP-E cores, with absolutely no E cores. In terms of pure performance, this processor does not create too much distance or superiority compared to last year's Ultra 200H series, but the biggest upgrade value lies in energy efficiency. The TDP level for Core Ultra 7 355 is about 25W, the CPU temperature at full load is about 90 degrees Celsius. This machine still only has 1 cooling fan, so the temperature at full load will be a bit high but in my experience it does not affect the palm rest area of ​​the machine much during use.

Thanks to the Intel 18A process, the machine operates cooler than the previous generation, optimizes power better and pushes battery life to very impressive levels. If the 2025 version only lasts about 7 to 8 hours with normal tasks, the 2026 generation can easily reach 10 hours or more depending on how you exploit the device. Obviously, the CPU is the most valuable upgrade on the VivoBook S14 this year and although the price is slightly higher, the accompanying Back to School promotions from ASUS will definitely compensate for this factor.

The device has 16GB Onboard and 1 empty DDR5 ram slot, supports upgrading to a maximum of 32GB RAM. In the future, you can easily upgrade the SSD or look for other external storage methods if you do not want to touch the internal components.

Design

Returning to external factors, VivoBook S14 2026 retains the familiar 14-inch screen size and 15.9 mm thickness. The finishing quality of the machine continues to maintain good performance with the combination of CNC aluminum and Polycarbonate plastic, in which aluminum accounts for a larger proportion. Not to mention the design factor, with a thin and light device of only 15.9 mm and 14 inches in size like the VivoBook S14, portability is something you don't need to worry about when putting it in your backpack to go to school or go to a coffee shop to meet your daily deadline. To optimize this experience, in this year's Back to School program, when purchasing a VivoBook S, ASUS will give you an ASUS AP4600 Backpack worth 970,000 VND.

Looking at the reality over many generations of VivoBook, the perfect quality of this model is increasingly improving year by year. Although it cannot reach the sophistication and meticulousness of the high-end ZenBook S line, the machine's chassis does not feel temporary at all. The connection port system is also extremely fully equipped to serve daily work and study needs, including 2 USB-A ports evenly distributed on the left and right sides, 2 USB-C ports, HDMI output port and 3.5mm audio jack. The input experience on the keyboard system is no different from 2025, you still have a layout with integrated backlight for a very confident typing feeling, combined with the touchpad below to provide good and smooth tracking capabilities.

Screen

The display ability of the device is provided by a 14-inch OLED panel, Full HD resolution and 60Hz scan frequency. The image quality on this panel has not changed dramatically compared to last year, still maintaining the strength of OLED technology with bright colors and extremely impressive black depth, completely superior to normal IPS LCD screens.

This is a screen born to perfectly meet the needs of studying, working and especially entertaining and watching movies thanks to its deep black range. For basic graphics work, this panel still provides vivid colors and is perfectly suited to school environments.

Conclusion

This VivoBook S14 2026 will be an extremely suitable device for customers who are students, especially those pursuing specific fields such as accounting, economics, finance, pedagogy or marketing and communications. Previous generations of VivoBook have inherently served these majors very well and with the 2026 version, everything continues to excel. The only factor to consider is the fluctuation in selling price of new models, but through the diverse Back to School programs from each brand and store during the upcoming back-to-school season, this is definitely still a name worth spending money on. Those interested in the product can see more here. Thank you ASUS for accompanying me in this article.