A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
For better multitasking and professional work like 3D modeling, machine learning, or intensive gaming, the ASUS ZenBook Pro Duo 15, with its high-performance components, OLED touchscreen, and dual-screen setup, excels but at a higher price, lower battery life, and less portability compared to the Lenovo Legion Slim 5i. The Legion Slim 5i offers excellent gaming and engineering capabilities, a high refresh rate display, and comes at a lower price, but sacrifices screen resolution and color accuracy. Choose the ZenBook Pro Duo for maximum power and creative tasks or the Legion Slim 5i for good performance with better portability and value. 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
- Very good for general use
- Excellent for engineering and design
- Very good for software development
- Good portability
- Best in class speakers
Advantages of the Lenovo Legion Slim 5i
- Very good for gaming and AI
- Very good keyboard
Key differences
General Use
8.5
7.9
3840 x 2160
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
332.0 nits
DISPLAY BRIGHTNESS
343.0 nits
7.0 Hours
BATTERY LIFE
7.0 Hours
7.5/10
KEYBOARD QUALITY SCORE
8.5/10
7.1/10
PORTABILITY SCORE
6.7/10
The ASUS ZenBook Pro Duo 15 is very good for general use, while the Lenovo Legion Slim 5i is good.
The ASUS ZenBook Pro Duo 15 offers superior general use performance due to its higher-end CPU and double the RAM, making multitasking and demanding applications more fluid, alongside an OLED screen with outstanding color accuracy and contrast, which enhances the visual experience. However, while both are somewhat comparable in weight and thickness, making portability and battery life for typical usage similar, the Lenovo Legion Slim 5i stands out with a better portability score and keyboard quality, which may appeal to those who prioritize typing comfort and ease of carrying around.
Engineering and Design
9.0
8.4
9.2/10
OVERALL CPU SCORE
9.0/10
7.8/10
OVERALL GPU SCORE
8.4/10
32.0 GB
RAM
16.0 GB
The ASUS ZenBook Pro Duo 15 is excellent for engineering and design, while the Lenovo Legion Slim 5i is very good.
The ASUS ZenBook Pro Duo 15 offers a high-performance Intel i9 processor and Nvidia RTX 3070 Ti GPU, along with a 4K OLED touchscreen that excels in color accuracy, making it powerful and visually impressive for engineering and design tasks. Meanwhile, the Lenovo Legion Slim 5i features a capable Intel i7 processor and Nvidia RTX 4060 GPU, with a screen that offers a high refresh rate beneficial for fluid visuals, but its IPS display doesn’t match the ASUS in color reproduction, affecting precision work in engineering and design.
Content Creation
8.7
8.0
9.2/10
OVERALL CPU SCORE
9.0/10
3840 x 2160
RESOLUTION
2560 x 1600
32.0 GB
RAM
16.0 GB
OLED
DISPLAY TECHNOLOGY
IPS
The ASUS ZenBook Pro Duo 15 and Lenovo Legion Slim 5i are both very good for content creation, though the ASUS ZenBook Pro Duo 15 is somewhat better.
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
7.8
9.2/10
OVERALL CPU SCORE
9.0/10
32.0 GB
RAM
16.0 GB
3840 x 2160
RESOLUTION
2560 x 1600
7.5/10
KEYBOARD QUALITY SCORE
8.5/10
The ASUS ZenBook Pro Duo 15 is very good for software development, while the Lenovo Legion Slim 5i 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
8.3
8.0
15.6in
SIZE
16.0in
3840 x 2160
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
165Hz
332.0 nits
BRIGHTNESS
343.0 nits
The ASUS Zenbook Pro Duo 15 has a better screen than the Lenovo Legion Slim 5i for general use, engineering and design, software development, and content creation, while the Lenovo Legion Slim 5i has a better screen for gaming and AI.
The ASUS ZenBook Pro Duo 15 excels in general use and engineering due to its high-resolution display that offers sharp imagery, vibrant colors, and sufficient brightness, making text clear and details crisp. Its superior color accuracy and wide color gamuts ensure that professionals in engineering and design see precise and consistent colors for detailed work. However, for gaming and 3D applications, its lower refresh rate compared to specialized gaming laptops might result in less fluid motion and slower response times, which are crucial for fast-paced interactive environments.
Cost
$2,000
$1,055
$500
$1,000
$1,500
$2,000
$2,500
$3,000
The ASUS ZenBook Pro Duo 15 has a price of $2,000 and the Lenovo Legion Slim 5i costs $1,055.
Let Us Help Find Your Perfect Laptop
Find your new laptop
Key similarities
Gaming and AI
7.8
8.0
7.8/10
OVERALL GPU SCORE
8.4/10
3840 x 2160
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.7/10
FAN NOISE SCORE
6.5/10
Although they have very similar scores, PerfectRec considers Lenovo Legion Slim 5i to be very good for gaming and AI, while the ASUS ZenBook Pro Duo 15 is good.
The ASUS ZenBook Pro Duo 15 is optimized for gaming and 3D tasks with its high-end GPU and OLED screen though its refresh rate is standard, while the Lenovo Legion Slim 5i has a GPU that is also suitable for gaming and a higher refresh rate IPS screen which offers a smoother gaming experience. However, the ASUS has a more powerful processor and better screen quality which may enhance gaming and 3D performance despite its lower refresh rate.
Battery
7.0 Hours
7.0 Hours
The ASUS Zenbook Pro Duo 15 has 7 hours of battery life. The Lenovo Legion Slim 5i has 7 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
5.2 lbs
0.8in
THICKNESS
0.9in
Although they have very similar scores, PerfectRec considers ASUS ZenBook Pro Duo 15 to have good portability, while the Lenovo Legion Slim 5i has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
7.6
7.4
The ASUS ZenBook Pro Duo 15 and Lenovo Legion Slim 5i both have good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Give feedback
We’re constantly working to improve.
How the ASUS ZenBook Pro Duo 15 and the Lenovo Legion Slim 5i compare to other laptops
Spec Comparison
 |  | |
| ASUS ZenBook Pro Duo 15 | Lenovo Legion Slim 5i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,000 | $1,055 | ||
Release Date | |||
Release Date | February 1, 2023 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.8'' x 0.85'' | 14.2'' x 10.3'' x 0.99'' | |
Weight | |||
Weight | 5.16 lbs | 5.29 lbs | |
Width | |||
Width | 14.17" | 14.16" | |
Depth | |||
Depth | 9.81" | 10.25" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-12900H | Intel i7-13700H | |
RAM | |||
RAM | 32 GB | 16 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 | 7 Hours | |
Battery Capacity | |||
Battery Capacity | 92 Wh | 80 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | OLED | IPS | |
Resolution | |||
Resolution | 3840 x 2160 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 332 nits | 343 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.6/10 | 7.4/10 | |
Portability Score | |||
Portability Score | 7.1/10 | 6.7/10 | |
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 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.6/10 | 7/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
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 | 2 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | N/A | |
Shopping
ASUS ZenBook Pro Duo 15
See more
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 Slim 5i
See more
Dig into reviews and images
PCMag
Mark Knapp | August 2023
"The Lenovo Legion Slim 5 Gen 8 acknowledges that a gaming laptop doesn’t have to be as thick as possible and can still ensure adequate cooling when the muscles need flexing. To this end, in the Slim 5 Gen 8, it finds a neat balance of refined, trimmed-down design that still lets its internals cruise (even above their max power ratings). Lenovo then added in some high-end build quality with an altogether excellent keyboard that’s useful for both work and play."
Get a great deal on the ASUS ZenBook Pro Duo 15 or the Lenovo Legion Slim 5i
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.
Give feedback
We're constantly perfecting our model
Laptop guides you might be interested in
More comparisons for you
Compare ASUS ZenBook Pro Duo 15 vs. ASUS ROG Zephyrus G16 (2024)
VS
Compare ASUS ZenBook Pro Duo 15 vs. ASUS ROG Strix Scar 15
VS
Compare ASUS ZenBook Pro Duo 15 vs. Gigabyte Aorus 17
VS
Compare Lenovo Legion Slim 5i vs. Acer Nitro 5 15
VS
Compare Lenovo Legion Slim 5i vs. Acer Swift Go 14
VS
Compare Lenovo Legion Slim 5i vs. Acer Predator Helios Neo 16
VS
FAQs
FAQs about laptops
Why trust us
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.
By the numbers
380
Laptops evaluated
48,640
Laptops stats compiled
13
Proprietary Laptops ratings developed
131,595
Recommendations made
28,513
Consumer hours saved
About the laptop team
Joe Golden, Ph.D
CEO and Laptops Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Craig Russell
Laptops Expert
Craig is a UK-based laptops expert. Craig works in IT, where he recommends and supports laptops and PCs for clients and has been recommending laptops on Reddit for five years.
Featured in
