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Updated April 10, 2024·
Choosing between the ASUS Zenbook Duo and the Lenovo Legion 9i depends on what you prioritize. If you're looking for a high-performance machine for 3D work, machine learning, gaming, or intensive engineering tasks, the Lenovo Legion 9i, with its more powerful processor and superior graphics card, will serve you better, but it comes at a higher price and is heavier, which compromises portability. On the other hand, the ASUS Zenbook Duo is less expensive, with sufficient performance for general use and good portability, but it won't match the Legion 9i in terms of raw power for demanding applications. The Zenbook Duo has a unique dual-screen feature that could be useful for multitasking, yet this might not justify the leap in performance and build quality that the Legion 9i offers. If budget constraints are less of a concern and you prefer top-tier performance and build, opt for the Lenovo Legion 9i, otherwise for everyday tasks and better value, the ASUS could be your choice. 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 Zenbook Duo (2024)
- Very 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
7.4
8.4
2880 x 1800
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
400.0 nits
DISPLAY BRIGHTNESS
682.0 nits
8.5 Hours
BATTERY LIFE
3.0 Hours
6.7/10
KEYBOARD QUALITY SCORE
9.0/10
8.0/10
PORTABILITY SCORE
6.3/10
The Lenovo Legion 9i is very good for general use, while the ASUS Zenbook Duo (2024) is good.
PerfectRec’s General Use Score takes into account the many different features of the laptop that make it more or less suitable for general productivity, web browsing, streaming, video calls, and running a wide variety of apps and programs.
Gaming and AI
6.3
9.2
3.7/10
OVERALL GPU SCORE
9.8/10
2880 x 1800
RESOLUTION
3200 x 2000
120Hz
REFRESH RATE
165Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.0/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion 9i is excellent for gaming and AI, while the ASUS Zenbook Duo (2024) 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
9.6
5.5/10
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 Zenbook Duo (2024) is good.
PerfectRec’s Engineering and Design Score takes into account the many different features of the laptop that make it more or less suitable for graphic design and 3D rendering work.
Content Creation
7.5
8.7
5.5/10
OVERALL CPU SCORE
9.9/10
2880 x 1800
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 Zenbook Duo (2024) 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
8.3
5.5/10
OVERALL CPU SCORE
9.9/10
16.0 GB
RAM
32.0 GB
2880 x 1800
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 Zenbook Duo (2024) 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
7.9
9.7
14.0in
SIZE
16.0in
2880 x 1800
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
120Hz
REFRESH RATE
165Hz
400.0 nits
BRIGHTNESS
682.0 nits
The Lenovo Legion 9i has a better screen than the ASUS Zenbook Duo 14 for general use, gaming and AI, engineering and design, content creation, and software development.
PerfectRec’s screen quality scores take into account various important factors that are relevant for different use cases.
Battery
8.5 Hours
3.0 Hours
The ASUS Zenbook Duo 14 has 8.5 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
Very Good
Fair
14.0in
SIZE
16.0in
3.6 lbs
WEIGHT
5.6 lbs
0.7in
THICKNESS
1.0in
The ASUS Zenbook Duo (2024) has very good portability, while the Lenovo Legion 9i has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8
8.5
The Lenovo Legion 9i has very good build quality, while the ASUS Zenbook Duo (2024) has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$1,500
$3,420
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS Zenbook Duo (2024) has a price of $1,500 and the Lenovo Legion 9i costs $3,420.
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How the ASUS Zenbook Duo (2024) and the Lenovo Legion 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS Zenbook Duo (2024) | Lenovo Legion 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,500 | $3,420 | ||
Release Date | |||
Release Date | January 30, 2024 | October 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 12.3'' x 8.6'' x 0.78'' | 14.1'' x 10.9'' x 1.01'' | |
Weight | |||
Weight | 3.64 lbs | 5.64 lbs | |
Width | |||
Width | 12.34" | 14.08" | |
Depth | |||
Depth | 8.58" | 10.93" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-1195G7 | Intel i9-13980HX | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 2 | |
Storage | |||
Storage | 512 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8.5 Hours | 3 Hours | |
Battery Capacity | |||
Battery Capacity | 70 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 14" | 16" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 2880 x 1800 | 3200 x 2000 | |
Refresh Rate | |||
Refresh Rate | 120Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 400 nits | 682 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.8/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 8/10 | 6.4/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7/10 | 6.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.8/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7/10 | 9.8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 3 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | 4 | |
Shopping
ASUS Zenbook Duo (2024)
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Dig into reviews and images
NotebookCheck
Allen Ngo | May 2020
"The Asus ZenBook Duo's second screen is like the Apple Touch Bar, but better. Most would agree that having two screens instead of one can really boost productivity and the ZenBook Duo is no different in this regard. It's tough going back to just one screen after becoming accustomed to spacious dual-screen setups. For a laptop form factor, however, users will have to accept some compromises. Firstly, weight is the most obvious drawback as the system is several hundred grams heavier than a regular ZenBook 14. Additionally, colors on the second screen will not be as vivid as the main display."
Lenovo Legion 9i
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Dig into reviews and images
PCMag
Matthew Buzzi | December 2023
"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 Zenbook Duo (2024) 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.
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