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What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
When deciding between the ASUS Zenbook Pro 15 and the Lenovo Legion Slim 5i, consider your primary needs. The ASUS is more budget-friendly and offers an OLED screen which is great for vibrant colors, as well as decent graphic capabilities suited for general use. On the other hand, the Lenovo is more expensive but has a higher resolution and refresh rate screen, better suited for gaming or graphic-intensive tasks. It also features a more powerful graphic card and processor. The Lenovo is notably heavier, making the ASUS more portable. The screen aspect ratio differences between the two may also affect your experience; the ASUS has a standard widescreen while the Lenovo has a taller display which can be beneficial for productivity tasks. 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 15
- Good portability
- Excellent battery life
Advantages of the Lenovo Legion Slim 5i
- Very good for engineering and design
- Very good for gaming and AI
- Very good for content creation
- Very good overall display quality
- Very good keyboard
Key differences
Gaming and AI
6.7
8.0
4.8/10
OVERALL GPU SCORE
8.4/10
1920 x 1080
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
6.5/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion Slim 5i is very good for gaming and AI, while the ASUS Zenbook Pro 15 is only fair.
The Lenovo Legion Slim 5i offers superior gaming and 3D capabilities primarily because it has a newer and more powerful Nvidia RTX 4060 graphics card, which is better suited for such tasks compared to the Nvidia RTX 3050 Ti found in the ASUS Zenbook Pro 15, and the Lenovo's screen has a higher refresh rate at 165 Hz, which results in smoother visuals than the 60 Hz screen on the ASUS.
Engineering and Design
7.5
8.4
7.4/10
OVERALL CPU SCORE
9.0/10
4.8/10
OVERALL GPU SCORE
8.4/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion Slim 5i is very good for engineering and design, while the ASUS Zenbook Pro 15 is good.
The ASUS Zenbook Pro 15, featuring an AMD Ryzen 7 CPU and Nvidia RTX 3050 Ti GPU, offers a solid balance for engineering tasks with an excellent OLED display for crisp visuals, though limited by a lower resolution screen and a GPU not as powerful as the Lenovo's offering. On the other hand, the Lenovo Legion Slim 5i, equipped with a higher-end Intel i7 CPU and Nvidia RTX 4060 GPU, excels with a more robust processing power and higher resolution IPS display, enhancing its suitability for more intensive engineering and design work but is less portable due to its greater weight and lower battery life.
Screen Quality
7.6
8.0
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
165Hz
346.0 nits
BRIGHTNESS
343.0 nits
The ASUS Zenbook Pro 15 has a better screen than the Lenovo Legion Slim 5i for engineering and design, while the Lenovo Legion Slim 5i has a better screen for gaming and AI, content creation, and software development.
The ASUS Zenbook Pro 15 offers a high-resolution display and brightness suited to general use, and its color accuracy benefits engineers and designers, but its refresh rate falls short for gaming and 3D, which demand smoother visuals. Meanwhile, the Lenovo Legion Slim 5i strikes a balance with solid resolution and brightness for everyday tasks, with decent color representation for professional creative work, though it too doesn’t meet the high refresh rate preferably sought by gamers and 3D professionals. In both cases, the tradeoff lies between excellent visuals and color precision for productivity versus the need for fast, fluid motion handling for immersive gaming and 3D applications.
Battery
12.5 Hours
7.0 Hours
The ASUS Zenbook Pro 15 has 12.5 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
4.4 lbs
WEIGHT
5.2 lbs
0.7in
THICKNESS
0.9in
The ASUS Zenbook Pro 15 has good portability, while the Lenovo Legion Slim 5i has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$1,109
$1,000
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The ASUS Zenbook Pro 15 has a price of $1,109 and the Lenovo Legion Slim 5i costs $1,000.
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Key similarities
General Use
7.7
7.9
1920 x 1080
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
346.0 nits
DISPLAY BRIGHTNESS
343.0 nits
12.5 Hours
BATTERY LIFE
7.0 Hours
7.0/10
KEYBOARD QUALITY SCORE
8.5/10
7.6/10
PORTABILITY SCORE
6.7/10
The Lenovo Legion Slim 5i and ASUS Zenbook Pro 15 are both good for general use.
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.
Content Creation
7.7
8.0
7.4/10
OVERALL CPU SCORE
9.0/10
1920 x 1080
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
OLED
DISPLAY TECHNOLOGY
IPS
Although they have very similar scores, PerfectRec considers Lenovo Legion Slim 5i to be very good for content creation, while the ASUS Zenbook Pro 15 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
7.5
7.8
7.4/10
OVERALL CPU SCORE
9.0/10
16.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
7.0/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Slim 5i and ASUS Zenbook Pro 15 are both 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.
Build Quality
7.6
7.4
The ASUS Zenbook Pro 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.
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How the ASUS Zenbook Pro 15 and the Lenovo Legion Slim 5i compare to other laptops
Spec Comparison
 |  | |
| ASUS Zenbook Pro 15 | Lenovo Legion Slim 5i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,109 | $1,000 | ||
Release Date | |||
Release Date | October 1, 2021 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 13.9'' x 9.4'' x 0.7'' | 14.2'' x 10.3'' x 0.99'' | |
Weight | |||
Weight | 4.41 lbs | 5.29 lbs | |
Width | |||
Width | 13.94" | 14.16" | |
Depth | |||
Depth | 9.37" | 10.25" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 7 5800H | Intel i7-13700H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 2 | |
Storage | |||
Storage | 512 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 12.5 Hours | 7 Hours | |
Battery Capacity | |||
Battery Capacity | 96 Wh | 80 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | OLED | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 346 nits | 343 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.6/10 | 7.4/10 | |
Portability Score | |||
Portability Score | 7.7/10 | 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 | 6.5/10 | 6.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 7/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7/10 | 7/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 2 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 3 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
Shopping
ASUS Zenbook Pro 15
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Dig into reviews and images
NotebookCheck
Allen Ngo | May 2022
"The ASUS Zenbook Pro 15 offers a strong CPU, chassis, and display. One of the most popular 15.6-inch prosumer or multimedia laptops out there is the Dell XPS 15. Thus, comparisons between it and the Asus Zenbook Pro 15 are inevitable. Asus has a couple of tricks up its sleeve that XPS users are still missing out on including 1080p OLED and an AMD Ryzen CPU which help separate the Zenbook Pro 15 from the XPS 15. It also integrates a numpad and a few more port options albeit at the cost of a larger chassis size."
Lenovo Legion Slim 5i
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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 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.
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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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