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Updated April 10, 2024·
The ASUS Zenbook Duo (2024) offers a unique dual-screen setup for multitasking and good general performance with all-day battery life, which makes it very portable and versatile for various tasks. It has a mid-tier processor and integrated graphics, which are suitable for everyday use and some light creative tasks, but not for intensive gaming or high-end engineering work. On the other hand, the Lenovo Slim Pro 9i boosts superior processing power and a dedicated graphics card, which makes it better equipped for demanding 3D work, machine learning, and gaming. It also has a better screen with higher brightness and color accuracy, making it ideal for creative professionals who prioritize visual fidelity. However, its battery life is shorter, slightly reducing its portability compared to the ASUS. If your workload involves more demanding computational tasks and you need a high-quality display, the Lenovo is the better option, despite being a bit less portable. If portability and battery life are your priority and your tasks aren't as demanding, the ASUS could serve you well, but you'll compromise on raw performance and screen quality. 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
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
7.4
8.5
2880 x 1800
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
400.0 nits
DISPLAY BRIGHTNESS
618.0 nits
8.5 Hours
BATTERY LIFE
6.0 Hours
6.7/10
KEYBOARD QUALITY SCORE
8.0/10
8.0/10
PORTABILITY SCORE
7.6/10
The Lenovo Slim Pro 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
7.6
3.7/10
OVERALL GPU SCORE
6.9/10
2880 x 1800
RESOLUTION
3072 x 1920
120Hz
REFRESH RATE
165Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.0/10
FAN NOISE SCORE
8.0/10
The Lenovo Slim Pro 9i is good 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
8.9
5.5/10
OVERALL CPU SCORE
9.0/10
3.7/10
OVERALL GPU SCORE
6.9/10
16.0 GB
RAM
32.0 GB
The Lenovo Slim Pro 9i is very good 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
8.5
5.5/10
OVERALL CPU SCORE
9.0/10
2880 x 1800
RESOLUTION
3072 x 1920
16.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The Lenovo Slim Pro 9i is very good for content creation, while the ASUS 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
9.0/10
16.0 GB
RAM
32.0 GB
2880 x 1800
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 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
9.6
14.0in
SIZE
14.5in
2880 x 1800
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
120Hz
REFRESH RATE
165Hz
400.0 nits
BRIGHTNESS
618.0 nits
The Lenovo Slim Pro 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
6.0 Hours
The ASUS Zenbook Duo 14 has 8.5 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.
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Key similarities
Portability
Very Good
Good
14.0in
SIZE
14.5in
3.6 lbs
WEIGHT
3.7 lbs
0.7in
THICKNESS
0.8in
Although they have very similar scores, PerfectRec considers ASUS Zenbook Duo (2024) to have very good portability, while the Lenovo Slim Pro 9i has good portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8
8.0
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 9i to have 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
$1,500
$500
$1,000
$1,500
$2,000
$2,500
The ASUS Zenbook Duo (2024) has a price of $1,500 and the Lenovo Slim Pro 9i costs $1,500.
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How the ASUS Zenbook Duo (2024) and the Lenovo Slim Pro 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS Zenbook Duo (2024) | Lenovo Slim Pro 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,500 | $1,500 | ||
Release Date | |||
Release Date | January 30, 2024 | February 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 12.3'' x 8.6'' x 0.78'' | 12.9'' x 9.6'' x 0.85'' | |
Weight | |||
Weight | 3.64 lbs | 3.7 lbs | |
Width | |||
Width | 12.34" | 12.9" | |
Depth | |||
Depth | 8.58" | 9.64" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-1195G7 | Intel i7-13705H | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 0 | |
Storage | |||
Storage | 512 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8.5 Hours | 6 Hours | |
Battery Capacity | |||
Battery Capacity | 70 Wh | 75 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 14" | 14.5" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 2880 x 1800 | 3072 x 1920 | |
Refresh Rate | |||
Refresh Rate | 120Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 400 nits | 618 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.8/10 | 8/10 | |
Portability Score | |||
Portability Score | 8/10 | 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 | 7/10 | 8/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.8/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 2 | |
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 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 Zenbook Duo (2024) 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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