The ASUS ROG Strix G15 is less expensive, offers robust performance particularly for gaming due to its dedicated GPU, and includes features like a backlit RGB keyboard and extra available slots for memory and storage expansion. However, it has a lower battery capacity, heavier weight, and a standard display resolution which might not be ideal for high-precision tasks. On the other hand, the Lenovo Slim Pro 9i, while more costly, boasts a superior display quality with higher resolution and a touchscreen, a more powerful processor with more RAM for intensive engineering and machine learning tasks, a longer battery life, and is lighter making it more portable. Balancing these factors is key; the ASUS may be suitable for gamers and those needing a machine with upgrade potential, while the Lenovo suits professionals seeking top-tier display, performance, and portability. 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
The ASUS ROG Strix G15 has no clear advantages over the Lenovo Slim Pro 9i.
Advantages of the Lenovo Slim Pro 9i
Very good for general use
Very good for engineering and design
Very good for software development
Very good for content creation
Best in class overall display quality
Very good overall build quality
Good battery life
Very good speakers
Very good keyboard
Key differences
General Use
7.7/10
8.5/10
1920 x 1080
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
284.0 nits
DISPLAY BRIGHTNESS
618.0 nits
5.5 Hours
BATTERY LIFE
6.0 Hours
7.5/10
KEYBOARD QUALITY SCORE
8.0/10
7.1/10
PORTABILITY SCORE
7.6/10
The Lenovo Slim Pro 9i is very good for general use, while the ASUS ROG Strix G15 is good.
The Lenovo Slim Pro 9i outshines the ASUS ROG Strix G15 for general use due to its higher-quality screen characteristics, greater RAM capacity, and significant battery life, which contributes to its excellent portability. While both offer powerful CPUs and substantial storage, the Lenovo also benefits from a higher resolution and brightness display, a more portable frame, and a longer battery life, factors that collectively enhance its suitability for a range of everyday tasks.
Gaming and AI
7.0/10
7.6/10
5.6/10
OVERALL GPU SCORE
6.9/10
1920 x 1080
RESOLUTION
3072 x 1920
144Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.2/10
FAN NOISE SCORE
8.0/10
The Lenovo Slim Pro 9i and ASUS ROG Strix G15 are both good for gaming and AI, though the Lenovo Slim Pro 9i is somewhat better.
The ASUS ROG Strix G15 is equipped with an RTX 3050 Ti GPU and a screen refresh rate of 144 Hz, which suits gamers and 3D applications, while the Lenovo Slim Pro 9i features a more advanced RTX 4050 GPU and a superior 165 Hz refresh rate, providing even smoother visuals for gaming and 3D content. Though both have quality screens, the Lenovo's Mini LED display with higher resolution may offer better screen quality, which is somewhat important for these use cases.
Engineering and Design
7.6/10
8.9/10
7.8/10
OVERALL CPU SCORE
9.0/10
5.6/10
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 ROG Strix G15 is good.
The Lenovo Slim Pro 9i is deemed excellent for engineering and design due to a more powerful GPU, a higher-quality and higher-resolution screen, along with double the RAM of the ASUS ROG Strix G15, enhancing multitasking and design work. Although the ASUS has a strong CPU, the Lenovo also offers better portability and a quieter experience, which makes it favorable for professionals who require mobility and a noise-sensitive environment.
Content Creation
7.7/10
8.5/10
7.8/10
OVERALL CPU SCORE
9.0/10
1920 x 1080
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 ROG Strix G15 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
7.2/10
8.3/10
7.8/10
OVERALL CPU SCORE
9.0/10
16.0 GB
RAM
32.0 GB
1920 x 1080
RESOLUTION
3072 x 1920
7.5/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo Slim Pro 9i is very good for software development, while the ASUS ROG Strix G15 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
7.1/10
9.6/10
15.6in
SIZE
14.5in
1920 x 1080
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
144Hz
REFRESH RATE
165Hz
284.0 nits
BRIGHTNESS
618.0 nits
The Lenovo Slim Pro 9i has a better screen than the ASUS ROG Strix G15 for general use, gaming and AI, engineering and design, content creation, and software development.
The Lenovo Slim Pro 9i provides a superior visual experience for general use and engineering due to its high-resolution display offering bright, sharp images and covering a wider color spectrum, making it ideal for tasks requiring color accuracy. The ASUS ROG Strix G15, while offering a good display, may not be as bright or as high in resolution as the Slim Pro 9i, resulting in less detail and vibrancy. However, both laptops may not be optimal for gaming and 3D because they have lower refresh rates, which are crucial for smooth motion and responsive gameplay.
Portability
Good
Good
15.6in
SIZE
14.5in
4.6 lbs
WEIGHT
3.7 lbs
0.9in
THICKNESS
0.8in
The Lenovo Slim Pro 9i and ASUS ROG Strix G15 both have good portability, though the Lenovo Slim Pro 9i has somewhat better portability.
The most portable laptops are small, thin, and light.
Cost
$1,249
$1,500
$500
$1,000
$1,500
$2,000
$2,500
The ASUS ROG Strix G15 has a price of $1,249 and the Lenovo Slim Pro 9i costs $1,500.
The ASUS ROG Strix G15 has 5.5 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.
Build Quality
7.8/10
8.0/10
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 9i to have very good build quality, while the ASUS ROG Strix G15 has 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 Slim Pro 9i 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 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 ROG Strix G15 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.
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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