The Lenovo Legion Slim 5i has a better screen than the ASUS TUF Gaming A15 for general use, gaming and AI, and engineering and design.
The ASUS TUF Gaming A15's screen provides clear visuals and adequate brightness suitable for everyday tasks and engineering applications, but its lower refresh rate may disappoint gamers seeking fluid motion. The Lenovo Legion Slim 5i offers a display with vibrant colors and high brightness for both daily use and detail-oriented work in engineering and design, but like the ASUS, its lower refresh rate is less optimal for fast-paced 3D gaming. Both models, despite their names, prioritize color accuracy and general use over the high refresh rates sought after by gaming and 3D enthusiasts.
Battery
11.0 Hours
7.0 Hours
The ASUS TUF Gaming A15 has 11 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.
Cost
$2,059
$1,000
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The ASUS TUF Gaming A15 has a price of $2,059 and the Lenovo Legion Slim 5i costs $1,000.
The Lenovo Legion Slim 5i and ASUS TUF Gaming A15 are both good for general use.
The ASUS TUF Gaming A15 offers a strong CPU and ample RAM for smooth general use, alongside a high-quality screen and a respectable battery life that support portability for users on the go. Meanwhile, the Lenovo Legion Slim 5i also provides strong CPU and RAM performance, and while it shares the portability trait with a quality display, it has a slightly lower battery life which could be a deciding factor for those needing longer unplugged usage.
Gaming and AI
8.0/10
8.0/10
8.9/10
OVERALL GPU SCORE
8.4/10
1920 x 1080
RESOLUTION
2560 x 1600
144Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
6.7/10
FAN NOISE SCORE
6.5/10
The ASUS TUF Gaming A15 and Lenovo Legion Slim 5i are both very good for gaming and AI.
The Lenovo Legion Slim 5i is preferred for gaming and 3D because it has a higher screen refresh rate which provides smoother visuals, essential for fast-paced games, despite its slightly less powerful GPU compared to the ASUS TUF Gaming A15.
Engineering and Design
8.2/10
8.4/10
9.1/10
OVERALL CPU SCORE
9.0/10
8.9/10
OVERALL GPU SCORE
8.4/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion Slim 5i and ASUS TUF Gaming A15 are both very good for engineering and design.
The ASUS TUF Gaming A15 offers high performance with its AMD Ryzen CPU and Nvidia RTX GPU, providing robust computing power for engineering tasks, and its IPS screen delivers quality visuals, although it's heavier and louder under load compared to the Lenovo Legion Slim 5i. The Legion Slim 5i, while slightly less powerful in graphic performance, boasts a higher resolution and brighter display, better portability due to lower weight, and operates more quietly, making it a compelling choice for on-the-go professionals who need a balance of power and convenience.
Content Creation
8.0/10
8.0/10
9.1/10
OVERALL CPU SCORE
9.0/10
1920 x 1080
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Slim 5i and ASUS TUF Gaming A15 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
7.6/10
7.8/10
9.1/10
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 TUF Gaming A15 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.
Portability
Good
Fair
15.6in
SIZE
16.0in
4.8 lbs
WEIGHT
5.2 lbs
0.9in
THICKNESS
0.9in
Although they have very similar scores, PerfectRec considers ASUS TUF Gaming A15 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
7.2/10
7.4/10
The Lenovo Legion Slim 5i and ASUS TUF Gaming A15 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 TUF Gaming A15 and the Lenovo Legion Slim 5i compare to other laptops
"With the release of the TUF Gaming A15, Asos have concentrated on the essentials: gaming performance. Our base version, which can be had for around $1,169, already provided enough power to play current games smoothly in a native resolution of 1080p and with maximum details - thanks to its new Nvidia GeForce RTX 4050 Laptop. If you utilize upscaling, then you can even manage to run ray tracing."
"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 TUF Gaming A15 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.
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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About the laptop team
Joe Golden, Ph.D
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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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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.
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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.