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Updated January 10, 2024·
If you prioritize high performance for tasks like intensive gaming or engineering, the Lenovo Legion 9i could be a better fit due to its more powerful graphics card, but it generally costs more than the ASUS ZenBook Pro Duo 15. On the other hand, the ASUS has a unique dual-screen design which may be beneficial for multitasking and creative work, but it's heavier and not as portable as the Legion. If battery life is a concern, note that the ASUS might not last as long as the Lenovo. For general use, both are capable, but if budget is a constraint, the ASUS offers considerable value, although with slightly lower performance than the Lenovo. 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 Pro Duo 15
- Good portability
- Good battery life
Advantages of the Lenovo Legion 9i
- Best in class for engineering and design
- Excellent for gaming and AI
- Best in class overall display quality
- Very good overall build quality
- Excellent keyboard
Key differences
Gaming and AI
7.8
9.2
7.8/10
OVERALL GPU SCORE
9.8/10
3840 x 2160
RESOLUTION
3200 x 2000
60Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.7/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion 9i is excellent for gaming and AI, while the ASUS ZenBook Pro Duo 15 is good.
The Lenovo Legion 9i stands out for gaming and 3D thanks to a more powerful Nvidia RTX 4080 GPU and a higher screen refresh rate of 165Hz, providing smoother visuals in fast-paced games compared to the ASUS ZenBook Pro Duo 15, which has a Nvidia RTX 3070 Ti GPU and a refresh rate of 60Hz. While both laptops have high-quality CPUs and screens, the Legion 9i's superior GPU and refresh rate give it an edge in delivering an excellent gaming and 3D experience.
Engineering and Design
9.0
9.6
9.2/10
OVERALL CPU SCORE
9.9/10
7.8/10
OVERALL GPU SCORE
9.8/10
32.0 GB
RAM
32.0 GB
The Lenovo Legion 9i is best in class for engineering and design, while the ASUS ZenBook Pro Duo 15 is excellent.
The ASUS ZenBook Pro Duo 15 offers a high-quality OLED touch screen and powerful components suitable for multitask engineering tasks; however, compared to the Lenovo Legion 9i, which boasts superior processing power with its more advanced CPU and a stronger GPU, the ZenBook may fall slightly behind in raw performance. Both laptops offer premium screen quality and plenty of RAM, but the Legion 9i pulls ahead with a higher refresh rate display and a Mini LED panel which is brighter, potentially making it more suitable for engineering applications that benefit from fast, vibrant visuals.
Screen Quality
8.3
9.7
15.6in
SIZE
16.0in
3840 x 2160
RESOLUTION
3200 x 2000
OLED
DISPLAY TECHNOLOGY
Mini LED
60Hz
REFRESH RATE
165Hz
332.0 nits
BRIGHTNESS
682.0 nits
The Lenovo Legion 9i has a better screen than the ASUS Zenbook Pro Duo 15 for general use, gaming and AI, and engineering and design.
The ASUS ZenBook Pro Duo 15, with its high-resolution display and bright screen, excels in providing crisp and vivid visuals for general use and detailed work needed in engineering and design due to expansive color coverage. In contrast, the Lenovo Legion 9i takes it up a notch with even better screen attributes, ensuring that colors pop and details are sharp for general use and professional design tasks. However, for gaming and 3D applications, both laptops fall short as their screens don't offer high refresh rates, which is crucial for smooth motion and rendering fast-paced scenes.
Battery
7.0 Hours
3.0 Hours
The ASUS Zenbook Pro Duo 15 has 7 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
5.1 lbs
WEIGHT
5.6 lbs
0.8in
THICKNESS
1.0in
The ASUS ZenBook Pro Duo 15 has good portability, while the Lenovo Legion 9i has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
7.6
8.5
The Lenovo Legion 9i has very good build quality, while the ASUS ZenBook Pro Duo 15 has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,000
$3,420
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS ZenBook Pro Duo 15 has a price of $2,000 and the Lenovo Legion 9i costs $3,420.
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Key similarities
General Use
8.5
8.4
3840 x 2160
RESOLUTION
3200 x 2000
OLED
DISPLAY TECHNOLOGY
Mini LED
332.0 nits
DISPLAY BRIGHTNESS
682.0 nits
7.0 Hours
BATTERY LIFE
3.0 Hours
7.5/10
KEYBOARD QUALITY SCORE
9.0/10
7.1/10
PORTABILITY SCORE
6.3/10
The ASUS ZenBook Pro Duo 15 and Lenovo Legion 9i are both very good for general use.
The ASUS ZenBook Pro Duo 15 offers a high-quality OLED screen and is relatively light, making it more portable, while its battery life is moderate, which is suitable for general use. The Lenovo Legion 9i, on the other hand, features a more powerful CPU and GPU and a very bright Mini LED screen but has a significantly shorter battery life and is heavier, which might not be as convenient for on-the-go use.
Content Creation
8.7
8.7
9.2/10
OVERALL CPU SCORE
9.9/10
3840 x 2160
RESOLUTION
3200 x 2000
32.0 GB
RAM
32.0 GB
OLED
DISPLAY TECHNOLOGY
Mini LED
The ASUS ZenBook Pro Duo 15 and Lenovo Legion 9i are both very good for content creation.
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
8.3
8.3
9.2/10
OVERALL CPU SCORE
9.9/10
32.0 GB
RAM
32.0 GB
3840 x 2160
RESOLUTION
3200 x 2000
7.5/10
KEYBOARD QUALITY SCORE
9.0/10
The ASUS ZenBook Pro Duo 15 and Lenovo Legion 9i are both very good for software development.
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.
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How the ASUS ZenBook Pro Duo 15 and the Lenovo Legion 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS ZenBook Pro Duo 15 | Lenovo Legion 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,000 | $3,420 | ||
Release Date | |||
Release Date | February 1, 2023 | October 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.8'' x 0.85'' | 14.1'' x 10.9'' x 1.01'' | |
Weight | |||
Weight | 5.16 lbs | 5.64 lbs | |
Width | |||
Width | 14.17" | 14.08" | |
Depth | |||
Depth | 9.81" | 10.93" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-12900H | Intel i9-13980HX | |
RAM | |||
RAM | 32 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 2 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 7 Hours | 3 Hours | |
Battery Capacity | |||
Battery Capacity | 92 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | OLED | Mini LED | |
Resolution | |||
Resolution | 3840 x 2160 | 3200 x 2000 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 332 nits | 682 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.6/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 7.1/10 | 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 | 7.8/10 | 6.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 7.5/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.6/10 | 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 Pro Duo 15
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Dig into reviews and images
PCWorld
Jared Newman | August 2021
"Benchmarks aside, the Asus ZenBook Pro Duo is hard to compare with other PCs. Its closest competition may be a multi-monitor desktop, or a laptop with an attached travel monitor. The Pro Duo is more portable and versatile than either of those options, especially with the software tools Asus has thrown on top. For a certain niche of artists, media creators, and gamers, all that might add up to something special, even if it’s unattainable for the rest of us."
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 Pro Duo 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.
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