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Updated January 10, 2024·
The ASUS Vivobook 15X is more affordable, with adequate performance for general use plus it includes a number pad and is capable of light gaming. Conversely, the Lenovo Slim Pro 9i, while more expensive, delivers significantly better performance for engineering, 3D work, and machine learning, and also offers superior build quality, a high-resolution touchscreen display, and enhanced color accuracy for creative work. Both laptops have similar portability, but the Lenovo's longer battery life may be a deciding factor for users needing to work on the go without frequent recharging. If budget is a concern and general use is the focus, consider the ASUS Vivobook 15X, but for demanding tasks and a premium experience, the Lenovo Slim Pro 9i is 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 15X
- The ASUS Vivobook 15X has no clear advantages over the Lenovo Slim Pro 9i.
Advantages of the Lenovo Slim Pro 9i
- Very good for general use
- Very good for engineering and design
- Good 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
- Very good speakers
- Very good keyboard
Key differences
General Use
7.1
8.5
1920 x 1080
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
250.0 nits
DISPLAY BRIGHTNESS
618.0 nits
8.0 Hours
BATTERY LIFE
6.0 Hours
6.7/10
KEYBOARD QUALITY SCORE
8.0/10
7.8/10
PORTABILITY SCORE
7.6/10
The Lenovo Slim Pro 9i is very good for general use, while the ASUS Vivobook 15X is good.
The Lenovo Slim Pro 9i outshines the ASUS Vivobook 15X for general use primarily due to its superior processing power with a higher-end CPU, substantially more RAM for multitasking, and an impressive high-resolution touchscreen with better color accuracy and brightness. Additionally, despite the Slim Pro 9i's larger battery capacity contributing to a longer battery life, both laptops maintain similar portability with minimal differences in weight and dimensions.
Gaming and AI
6.0
7.6
3.6/10
OVERALL GPU SCORE
6.9/10
1920 x 1080
RESOLUTION
3072 x 1920
60Hz
REFRESH RATE
165Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.5/10
FAN NOISE SCORE
8.0/10
The Lenovo Slim Pro 9i is good for gaming and AI, while the ASUS Vivobook 15X is only fair.
The Lenovo Slim Pro 9i outperforms the ASUS Vivobook 15X in gaming and 3D tasks primarily because of its superior Nvidia RTX 4050 graphics card and higher screen refresh rate. On the other hand, the Vivobook's lower-tier integrated graphics and standard refresh rate are sufficient for casual gaming but not ideal for more demanding 3D applications.
Engineering and Design
6.3
8.9
5.6/10
OVERALL CPU SCORE
9.0/10
3.6/10
OVERALL GPU SCORE
6.9/10
8.0 GB
RAM
32.0 GB
The Lenovo Slim Pro 9i is very good for engineering and design, while the ASUS Vivobook 15X is only fair.
The Lenovo Slim Pro 9i outshines the ASUS Vivobook 15X in engineering and design due to its significantly higher RAM, superior processor, dedicated Nvidia GPU, and a high-quality Mini LED screen that offers better resolution and color accuracy. While both are reasonably portable, the ASUS offers a more muted experience in terms of power and display, suitable for lighter tasks, but may benefit from a quieter operating noise and a number pad which the Lenovo lacks.
Content Creation
7.1
8.5
5.6/10
OVERALL CPU SCORE
9.0/10
1920 x 1080
RESOLUTION
3072 x 1920
8.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The Lenovo Slim Pro 9i is very good for content creation, while the ASUS Vivobook 15X 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
6.9
8.3
5.6/10
OVERALL CPU SCORE
9.0/10
8.0 GB
RAM
32.0 GB
1920 x 1080
RESOLUTION
3072 x 1920
6.7/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo Slim Pro 9i is very good for software development, while the ASUS Vivobook 15X is only fair.
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
6.2
9.6
15.6in
SIZE
14.5in
1920 x 1080
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
60Hz
REFRESH RATE
165Hz
250.0 nits
BRIGHTNESS
618.0 nits
The Lenovo Slim Pro 9i has a better screen than the ASUS Vivobook 15X for general use, gaming and AI, engineering and design, content creation, and software development.
The Lenovo Slim Pro 9i boasts a high-resolution display with bright, vibrant visuals, making it excellent for general activities and detailed engineering work due to its wide color gamut coverage. The ASUS Vivobook 15X has a decent display but it doesn’t match the Lenovo in terms of color accuracy and brightness, making it less ideal for color-critical engineering tasks. However, both laptops lack high refresh rate screens which are crucial for smooth visuals in gaming and 3D rendering, implying that they may not be the best choice for such demanding visual tasks.
Battery
8.0 Hours
6.0 Hours
The ASUS Vivobook 15X has 8 hours of battery life. The Lenovo Slim Pro 9i has 6 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.
Build Quality
7.0
8.0
The Lenovo Slim Pro 9i has very good build quality, while the ASUS Vivobook 15X has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$525
$1,500
$0
$500
$1,000
$1,500
$2,000
$2,500
The ASUS Vivobook 15X has a price of $525 and the Lenovo Slim Pro 9i costs $1,500.
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Key similarities
Portability
Good
Good
15.6in
SIZE
14.5in
3.7 lbs
WEIGHT
3.7 lbs
0.7in
THICKNESS
0.8in
The ASUS Vivobook 15X and Lenovo Slim Pro 9i both have good portability.
The most portable laptops are small, thin, and light.
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We’re constantly working to improve.
How the ASUS Vivobook 15X and the Lenovo Slim Pro 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS Vivobook 15X | Lenovo Slim Pro 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$525 | $1,500 | ||
Release Date | |||
Release Date | April 1, 2023 | February 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.2'' x 0.7'' | 12.9'' x 9.6'' x 0.85'' | |
Weight | |||
Weight | 3.75 lbs | 3.7 lbs | |
Width | |||
Width | 14.16" | 12.9" | |
Depth | |||
Depth | 9.15" | 9.64" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 5 7530U | Intel i7-13705H | |
RAM | |||
RAM | 8 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 1 | 0 | |
Storage | |||
Storage | 512 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 6 Hours | |
Battery Capacity | |||
Battery Capacity | 42 Wh | 75 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 14.5" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 1920 x 1080 | 3072 x 1920 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 250 nits | 618 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7/10 | 8/10 | |
Portability Score | |||
Portability Score | 7.9/10 | 7.7/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.5/10 | 8/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.8/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | Yes | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 2 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
ASUS Vivobook 15X
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Dig into reviews and images
The Verge
Monica Chin | May 2023
"All in all, my day on the Vivobook had its ups and downs. It is a really pretty and well-built device, and it had all of the functionality I needed to get me through my browser-based workload. But the speakers weren’t my favorite, and the battery life was just too short."
Lenovo Slim Pro 9i
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Dig into reviews and images
PCWorld
Matthew S. Smith | August 2023
"The Lenovo Slim Pro 9i is an impressive laptop with a brilliant Mini-LED display, a powerful 100-watt version of Nvidia RTX 4050 graphics, and excellent connectivity. Having run the Cinebench benchmark again, we were impressed with the CPU performance. That makes the Slim Pro 9i is an easy recommendation, especially for those who care about GPU and CPU performance. It’s also a fantastic choice if you frequently view HDR movies and games on your laptop."
Get a great deal on the ASUS Vivobook 15X or the Lenovo Slim Pro 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.
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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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