If you prioritize gaming or intensive tasks like 3D rendering, the ASUS ROG Strix, with its robust performance, may be worth the extra cost, but consider that it's heavier and might have shorter battery life. On the other hand, the Lenovo Slim Pro 9i, being more affordable and lightweight, is better suited for general use and easy to carry around, though it may not handle demanding applications as well as the ASUS. Remember, if long battery life and portability are vital for your daily use, the Lenovo could be the more practical option. 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 (2024)
Excellent for engineering and design
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 (2024) is very good for gaming and AI, while the Lenovo Slim Pro 9i is good.
The ASUS ROG Strix G18 is equipped with a higher-end GPU and a faster screen refresh rate, making it superior for gaming and 3D applications, providing smoother visuals and handling more intensive tasks. The Lenovo Slim Pro 9i, while also capable for gaming with a quality GPU and decent refresh rate, prioritizes a balance between performance and portability, which may affect its ability to perform at the same level in demanding scenarios.
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 ASUS ROG Strix G18 has a better screen than the Lenovo Slim Pro 9i for content creation, while the Lenovo Slim Pro 9i has a better screen for general use, gaming and AI, and engineering and design.
For general use and engineering tasks, the Lenovo Slim Pro 9i stands out with a display that offers sharper images, more accurate colors, and higher brightness, making it ideal for tasks requiring visual precision and comfortable viewing. The ASUS ROG Strix G18, while also having a quality display, falls short in comparison due to slightly less color accuracy and brightness, but still performs well for engineering applications. However, neither is optimal for gaming and 3D applications, as they lack the high refresh rates that provide smoother motion and better responsiveness, which are essential for these activities.
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 (2024) has poor portability.
The most portable laptops are small, thin, and light.
Cost
$2,203
$1,500
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The ASUS ROG Strix G18 (2024) has a price of $2,203 and the Lenovo Slim Pro 9i costs $1,500.
The ASUS ROG Strix G18 (2024) and Lenovo Slim Pro 9i are both very good for general use.
The ASUS ROG Strix G18 offers powerful CPU and RAM, making it excellent for demanding tasks and multitasking, along with a high-quality screen for vivid visuals, but it's less portable and has a shorter battery life; in contrast, the Lenovo Slim Pro 9i provides a balance of great performance, better portability with longer battery life, and a high-quality screen, though it might not match the ASUS in raw power for the most intensive tasks. Both laptops have sufficient storage, comfortable keyboards, quality speakers, and manage heat and noise effectively, contributing to their overall appeal for general use.
Engineering and Design
9.2/10
8.9/10
9.9/10
OVERALL CPU SCORE
9.0/10
8.9/10
OVERALL GPU SCORE
6.9/10
32.0 GB
RAM
32.0 GB
Although they have very similar scores, PerfectRec considers ASUS ROG Strix G18 (2024) to be excellent for engineering and design, while the Lenovo Slim Pro 9i is very good.
The ASUS ROG Strix G18 boasts a high-performance CPU, ample RAM, and a top-tier GPU, providing the raw power needed for engineering tasks and ensuring crisp visuals with its superior screen quality; however, its size makes it less portable. On the other hand, the Lenovo Slim Pro 9i, while also equipped with a robust CPU, significant RAM, and a high-quality GPU, offers a balance of performance and portability, plus it has a comfortable keyboard and speakers to enhance user experience, but it may generate more operating noise under heavy loads.
Content Creation
8.8/10
8.5/10
9.9/10
OVERALL CPU SCORE
9.0/10
2560 x 1600
RESOLUTION
3072 x 1920
32.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The ASUS ROG Strix G18 (2024) 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
8.5/10
8.3/10
9.9/10
OVERALL CPU SCORE
9.0/10
32.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3072 x 1920
8.0/10
KEYBOARD QUALITY SCORE
8.0/10
The ASUS ROG Strix G18 (2024) and Lenovo Slim Pro 9i 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 (2024) has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Give feedback
We’re constantly working to improve.
How the ASUS ROG Strix G18 (2024) 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 (2024) 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.
By the numbers
380
Laptops evaluated
48,640
Laptops stats compiled
13
Proprietary Laptops ratings developed
101,595
Recommendations made
22,013
Consumer hours saved
About the laptop team
Joe Golden, Ph.D
CEO and Laptops Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
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.
Craig Russell
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.