The ASUS ROG Strix G15 is often somewhat more expensive and offers solid gaming performance but is heavier and has shorter battery life. The Lenovo Legion Slim 5, while often less expensive, provides better battery life, a higher resolution screen, and lighter design for portability, making it suitable for both gaming and general use. 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 ROG Strix G15
Good portability
Advantages of the Lenovo Legion Slim 5
Very good for engineering and design
Good battery life
Very good keyboard
Key differences
Gaming and AI
7.0/10
7.7/10
5.6/10
OVERALL GPU SCORE
8.4/10
1920 x 1080
RESOLUTION
1920 x 1200
144Hz
REFRESH RATE
144Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.2/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion Slim 5 and ASUS ROG Strix G15 are both good for gaming and AI, though the Lenovo Legion Slim 5 is somewhat better.
The ASUS ROG Strix G15 is equipped with an Nvidia RTX 3050 Ti and a 144Hz screen refresh rate, which suits gaming and 3D applications, but the Lenovo Legion Slim 5 takes it up a notch with an Nvidia RTX 4060 and the same 144Hz refresh, offering more power for graphically intensive tasks and a higher screen resolution for better screen quality. While both have capable CPUs and high-quality IPS screens, the superior GPU in the Legion may provide a noticeably better experience for demanding games and 3D applications, though both are very suitable for these uses.
Screen Quality
7.1/10
7.2/10
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
144Hz
REFRESH RATE
144Hz
284.0 nits
BRIGHTNESS
300.0 nits
The Lenovo Legion Slim 5 has a better screen than the ASUS ROG Strix G15 for content creation.
The ASUS ROG Strix G15 and Lenovo Legion Slim 5 both feature panels with adequate resolution and brightness for everyday tasks and crisp visuals for engineering work, where accurate color reproduction is crucial. However, their screens fall short for gaming and 3D applications due to lower refresh rates which don't deliver the smooth motion preferred for fast-paced visuals. The importance of high refresh rates alongside resolution and panel quality in gaming is where these laptops do not meet the mark for dedicated gamers or professionals in 3D work.
Battery
5.5 Hours
7.0 Hours
The ASUS ROG Strix G15 has 5.5 hours of battery life. The Lenovo Legion Slim 5 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
$1,249
$1,000
$0
$500
$1,000
$1,500
$2,000
The ASUS ROG Strix G15 has a price of $1,249 and the Lenovo Legion Slim 5 costs $1,000.
The ASUS ROG Strix G15 and Lenovo Legion Slim 5 are both good for general use.
The ASUS ROG Strix G15 is solid for general use because of its powerful AMD Ryzen 9 processor, ample RAM, and large storage combined with a quality IPS screen and significant portability given its light weight and compact dimensions, though its battery life is modest.
Engineering and Design
7.6/10
8.0/10
7.8/10
OVERALL CPU SCORE
8.3/10
5.6/10
OVERALL GPU SCORE
8.4/10
16.0 GB
RAM
16.0 GB
Although they have very similar scores, PerfectRec considers Lenovo Legion Slim 5 to be very good for engineering and design, while the ASUS ROG Strix G15 is good.
The Lenovo Legion Slim 5 is considered very good for engineering and design use because it has a newer CPU that may better handle design software, a more powerful GPU for tasks like 3D rendering, and a higher resolution screen with a more preferred aspect ratio for productivity. In contrast, the ASUS ROG Strix G15, while solid for engineering tasks, offers slightly less GPU power, a standard full HD screen, and an older CPU, which together make it good, but not as optimal as the Lenovo for demanding engineering and design workloads.
Content Creation
7.7/10
7.5/10
7.8/10
OVERALL CPU SCORE
8.3/10
1920 x 1080
RESOLUTION
1920 x 1200
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS ROG Strix G15 and Lenovo Legion Slim 5 are both 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
7.2/10
7.4/10
7.8/10
OVERALL CPU SCORE
8.3/10
16.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
1920 x 1200
7.5/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Slim 5 and ASUS ROG Strix G15 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
4.6 lbs
WEIGHT
5.2 lbs
0.9in
THICKNESS
0.9in
Although they have very similar scores, PerfectRec considers ASUS ROG Strix G15 to have good portability, while the Lenovo Legion Slim 5 has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8/10
7.4/10
The ASUS ROG Strix G15 and Lenovo Legion Slim 5 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 ROG Strix G15 and the Lenovo Legion Slim 5 compare to other laptops
"The ASUS ROG Strix G15 is a successful high-performance 15-inch laptop. The Asus ROG Strix impresses with an elaborate design and fast hardware. The latter can unleash its potential well in the large 15-inch case and achieve a decent performance boost compared to the previous generation. Especially the stunning 300 Hz display as well as the RTX 3070 and its generous TDP give gamers their money's worth. Asus didn't neglect seemingly small details, either, such as the keyboard and the maintenance options. The ROG Strix G15 offers a lot of pure performance and excellent workmanship in a 15-inch format, but connectivity leaves something to be desired."
"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 ROG Strix G15 or the Lenovo Legion Slim 5
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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