The ASUS Vivobook S 15 is a great choice if you are looking for a more affordable option with solid general use performance and decent portability, but with less power for tasks like 3D rendering or intense gaming. On the other hand, the Lenovo Legion 9i is much better suited for high-end gaming, machine learning, and engineering tasks due to its more powerful processor and graphics card, though it is more expensive and less portable. So, if you need a laptop for everyday tasks and light work, the ASUS might suffice, but for more demanding applications and you don't mind spending more, the Lenovo would be the better option. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the ASUS Vivobook S 15
Good portability
Good battery life
Advantages of the Lenovo Legion 9i
Very good for general use
Best in class for engineering and design
Excellent for gaming and AI
Very good for software development
Very good for content creation
Best in class overall display quality
Very good overall build quality
Best in class speakers
Excellent keyboard
Key differences
General Use
7.7/10
8.4/10
1920 x 1080
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
267.0 nits
DISPLAY BRIGHTNESS
682.0 nits
9.0 Hours
BATTERY LIFE
3.0 Hours
6.7/10
KEYBOARD QUALITY SCORE
9.0/10
7.7/10
PORTABILITY SCORE
6.3/10
The Lenovo Legion 9i is very good for general use, while the ASUS Vivobook S 15 is good.
The ASUS Vivobook S 15 is suitable for general use with its decent CPU, ample RAM, and good screen quality, and it's slightly more portable with a higher battery life compared to the Lenovo Legion 9i. However, the Lenovo Legion 9i excels in general use with its superior CPU, double the RAM, exceptional screen quality, and robust speaker and keyboard quality, though it's less portable with a heavier build and shorter battery life.
Gaming and AI
6.3/10
9.2/10
3.7/10
OVERALL GPU SCORE
9.8/10
1920 x 1080
RESOLUTION
3200 x 2000
60Hz
REFRESH RATE
165Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.5/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion 9i is excellent for gaming and AI, while the ASUS Vivobook S 15 is only fair.
PerfectRec’s Gaming and AI Score strongly emphasizes graphics processing capability, while also taking into account other factors that impact suitability for gaming and AI work.
Engineering and Design
7.1/10
9.6/10
7.4/10
OVERALL CPU SCORE
9.9/10
3.7/10
OVERALL GPU SCORE
9.8/10
16.0 GB
RAM
32.0 GB
The Lenovo Legion 9i is best in class for engineering and design, while the ASUS Vivobook S 15 is good.
The Lenovo Legion 9i stands out for engineering and design use primarily due to its high-end Intel i9 processor, doubled RAM capacity, and superior Nvidia RTX 4080 graphics, which together offer robust performance for demanding tasks. In contrast, the ASUS Vivobook S 15, with its AMD Ryzen 7 CPU and integrated Vega 8 graphics, is better suited for less intensive engineering applications but gains an edge in portability, weighing less and offering a longer battery life useful for on-the-go use.
Content Creation
7.6/10
8.7/10
7.4/10
OVERALL CPU SCORE
9.9/10
1920 x 1080
RESOLUTION
3200 x 2000
16.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The Lenovo Legion 9i is very good for content creation, while the ASUS Vivobook S 15 is good.
PerfectRec’s Content Creation Score takes into account the many different features of the laptop that make it more or less suitable for photo editing, video editing and other content creation tasks.
Software Development
7.4/10
8.3/10
7.4/10
OVERALL CPU SCORE
9.9/10
16.0 GB
RAM
32.0 GB
1920 x 1080
RESOLUTION
3200 x 2000
6.7/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion 9i is very good for software development, while the ASUS Vivobook S 15 is good.
PerfectRec’s Software Development Score takes into account the many different features of the laptop that make it more or less suitable for software developers.
Screen Quality
6.3/10
9.7/10
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
60Hz
REFRESH RATE
165Hz
267.0 nits
BRIGHTNESS
682.0 nits
The Lenovo Legion 9i has a better screen than the ASUS Vivobook S 15 for general use, gaming and AI, engineering and design, content creation, and software development.
When choosing between the ASUS Vivobook S 15 and the Lenovo Legion 9i, the Lenovo excels in screen quality for both general use and engineering/design due to its higher resolution, better panel type, and brighter display, ensuring crisp and vibrant visuals. The Lenovo also offers superior color accuracy critical for engineering and design work, with extensive color gamut coverage, allowing professionals to see a wider range of colors more precisely. However, neither is optimal for 3D work or gaming because despite their good qualities in other areas, both laptops have a lower refresh rate, which is crucial for the smooth rendering of fast-moving visuals in these fields.
Battery
9.0 Hours
3.0 Hours
The ASUS Vivobook S 15 has 9 hours of battery life. The Lenovo Legion 9i has 3 hours of battery life.
Battery life estimate is based on a mix of common use patterns. More portable and higher performing laptops tend to have less battery life.
Portability
Good
Fair
15.6in
SIZE
16.0in
3.9 lbs
WEIGHT
5.6 lbs
0.7in
THICKNESS
1.0in
The ASUS Vivobook S 15 has good portability, while the Lenovo Legion 9i has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
7.0/10
8.5/10
The Lenovo Legion 9i has very good build quality, while the ASUS Vivobook S 15 has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$908
$3,420
$0
$1,000
$2,000
$3,000
$4,000
The ASUS Vivobook S 15 has a price of $908 and the Lenovo Legion 9i costs $3,420.
"Internals make Asus VivoBook S15 laptop a compelling option. The Asus multimedia laptop may look rather below-average with its modest black chassis, lack of a dedicated GPU, limited RAM and meagre port selection without Thunderbolt support. But your impression of the device will start changing once you set your eyes on its high-contrast OLED capable of producing deep blacks and highly accurate colours. And your opinion will change completely when the VivoBook is switched on. The AMD CPU can effortlessly keep up with powerful rivals from Intel. The integrated Radeon graphics blows away Intel's iGPU when it comes to graphics workloads such as rendering and simpler games."
"The Lenovo Legion 9i is meant as a top-end flagship showcase for enthusiasts, and on that, it delivers. You'll find flashier designs in this price tier—Razer’s all-metal build in a similarly sized laptop like the Blade 16, or monstrous 18-inch machines—but this is a well-thought-out laptop. The chassis is trim for a 16-inch powerhouse, the lid is unique, and bespoke liquid cooling takes performance to the next level."
Get a great deal on the ASUS Vivobook S 15 or the Lenovo Legion 9i
About ASUS
ASUS, a Taiwanese electronics brand, is one of the largest personal computer vendor by market share. The majority of their laptops are targeted towards personal use or gaming. Their most popular product lines include the budget-friendly VivoBook, more premium ZenBook, and their TUF and ROG gaming laptops, the latter of which has a reputation for excellent gaming performance.
About Lenovo
Lenovo is a Chinese technology company, and one of the largest personal computer vendor. They are well known for a variety of technology products, including laptops. Their consumer series include their entry level IdeaPad and LOQ series and mid-to-high-end Yoga and Legion series. On the business-oriented side, their series include their entry-level ThinkBook series and mid-to-high-end ThinkPad series. Lenovo laptops offer strong performance for reasonable prices, and are often on sale.
This information was produced and vetted by the PerfectRec laptops team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest laptop information and makes it digestible for you.
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