The ASUS ROG Strix G18 offers robust performance for intensive tasks like 3D rendering, machine learning, and gaming, benefiting from a powerful processor and graphics card, but at the expense of portability due to its larger size and heavier weight. Its keyboard includes a number pad, and the battery life is reasonable for a high-powered machine. On the other hand, the Lenovo Slim Pro 9i is lighter and more portable, with a higher resolution and brighter touchscreen display, and it offers superior general-use performance, color accuracy, and screen clarity. The Slim Pro 9i has longer battery life, making it ideal for on-the-go usage, but it may fall slightly short in gaming or heavy-duty engineering compared to the ASUS. 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 G18
Very good for gaming and AI
Best in class speakers
Advantages of the Lenovo Slim Pro 9i
Best in class overall display quality
Very good overall build quality
Good portability
Key differences
Gaming and AI
8.7/10
7.6/10
8.9/10
OVERALL GPU SCORE
6.9/10
2560 x 1600
RESOLUTION
3072 x 1920
240Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
No
7.2/10
FAN NOISE SCORE
8.0/10
The ASUS ROG Strix G18 is very good for gaming and AI, while the Lenovo Slim Pro 9i is good.
The ASUS ROG Strix G18 surpasses in gaming and 3D tasks primarily due to its more powerful Nvidia RTX 4070 GPU and higher screen refresh rate which results in smoother visuals, while the Lenovo Slim Pro 9i, despite having a slightly less powerful RTX 4050 GPU, offers excellent screen quality with its Mini LED display that might compensate for the lower refresh rate in games and 3D applications that benefit from better color accuracy and contrasts.
Screen Quality
8.7/10
9.6/10
18.0in
SIZE
14.5in
2560 x 1600
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
240Hz
REFRESH RATE
165Hz
422.0 nits
BRIGHTNESS
618.0 nits
The Lenovo Slim Pro 9i has a better screen than the ASUS ROG Strix G18 for general use, gaming and AI, and engineering and design.
The ASUS ROG Strix G18 has a high-resolution display with strong brightness, making it vibrant for everyday tasks and detailed engineering work, but its lower refresh rate hinders the smooth visuals critical for 3D applications. The Lenovo Slim Pro 9i excels with outstanding color accuracy covering wide color gamuts and sharp resolution, ideal for color-sensitive engineering and design tasks; however, like the ASUS, its refresh rate is not tailored for the fast-paced action in gaming and 3D environments. In general use, both laptops offer exceptional screen clarity and visibility, but neither is optimized for the high-refresh demands of gamers and 3D artists.
Battery
8.0 Hours
6.0 Hours
The ASUS ROG Strix G18 has 8 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.
Portability
Poor
Good
18.0in
SIZE
14.5in
6.6 lbs
WEIGHT
3.7 lbs
1.0in
THICKNESS
0.8in
The Lenovo Slim Pro 9i has good portability, while the ASUS ROG Strix G18 has poor portability.
The most portable laptops are small, thin, and light.
Cost
$2,299
$1,500
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The ASUS ROG Strix G18 has a price of $2,299 and the Lenovo Slim Pro 9i costs $1,500.
The Lenovo Slim Pro 9i and ASUS ROG Strix G18 are both very good for general use.
The ASUS ROG Strix G18 is well-regarded for general use because of its high-performance CPU and ample RAM that handle multitasking efficiently, paired with a high-quality screen that enhances the visual experience; however, its size and weight compromise its portability. Conversely, the Lenovo Slim Pro 9i excels in general use thanks to its strong CPU, more generous RAM for advanced multitasking, superior screen with higher pixel density and brightness for sharp and vivid displays, and greater portability due to its lighter weight and more compact size, although it offers slightly lower battery life.
Engineering and Design
8.9/10
8.9/10
9.9/10
OVERALL CPU SCORE
9.0/10
8.9/10
OVERALL GPU SCORE
6.9/10
16.0 GB
RAM
32.0 GB
The ASUS ROG Strix G18 and Lenovo Slim Pro 9i are both very good for engineering and design.
The Lenovo Slim Pro 9i excels in engineering and design tasks due to its higher RAM capacity, superior screen technology with higher pixel density, brightness, and contrast, notably enhancing visual detail and color accuracy for intricate designs. Although the ASUS ROG Strix G18 sports a more powerful CPU and GPU, which is favorable for highly intensive processing tasks, the Lenovo's balance of performance with superior screen features and greater portability makes it exceptionally well-suited for engineering and design use.
Content Creation
8.6/10
8.5/10
9.9/10
OVERALL CPU SCORE
9.0/10
2560 x 1600
RESOLUTION
3072 x 1920
16.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The ASUS ROG Strix G18 and Lenovo Slim Pro 9i 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
8.1/10
8.3/10
9.9/10
OVERALL CPU SCORE
9.0/10
16.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3072 x 1920
8.0/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo Slim Pro 9i and ASUS ROG Strix G18 are both very 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
7.8/10
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 G18 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 G18 and the Lenovo Slim Pro 9i compare to other laptops
"With the ROG Strix G18, Asus has made an almost consistently good debut in the still quite new 18-inch laptop segment. The base unit case shows a few signs of weakness in the area of stability and is something which has an effect on the perceived quality of the input devices (the chassis tends to rattle a bit). Nevertheless, thanks to generous port features (incl. Thunderbolt 4), a striking design, and extensive lighting (keyboard, LED strip on the front), gamers get a fitting gaming platform."
"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 G18 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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