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Company ProductName Specs
Company ProductName Specs
Advantages of the ASUS ROG Strix G18
- Good battery life
Advantages of the Lenovo Legion 9i
- Best in class for engineering and design
- Best in class overall display quality
- Very good overall build quality
- Excellent keyboard
Key differences
Screen Quality
8.7
9.7
18.0in
SIZE
16.0in
2560 x 1600
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
240Hz
REFRESH RATE
165Hz
422.0 nits
BRIGHTNESS
682.0 nits
The ASUS ROG Strix G18 has a better screen than the Lenovo Legion 9i for content creation, while the Lenovo Legion 9i has a better screen for general use, gaming and AI, and engineering and design.
PerfectRec’s screen quality scores take into account various important factors that are relevant for different use cases.
Battery
8.0 Hours
3.0 Hours
The ASUS ROG Strix G18 has 8 hours of battery life. The Lenovo Legion 9i has 3 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
Fair
18.0in
SIZE
16.0in
6.8 lbs
WEIGHT
5.7 lbs
1.0in
THICKNESS
0.8in
The Lenovo Legion 9i has only fair portability, while the ASUS ROG Strix G18 has poor portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8
8.5
The Lenovo Legion 9i has 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.
Cost
$3,700
$3,999
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS ROG Strix G18 has a price of $3,700 and the Lenovo Legion 9i costs $3,999.
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Key similarities
General Use
8.8
8.4
2560 x 1600
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
422.0 nits
DISPLAY BRIGHTNESS
682.0 nits
8.0 Hours
BATTERY LIFE
3.0 Hours
8.0/10
KEYBOARD QUALITY SCORE
9.0/10
5.6/10
PORTABILITY SCORE
6.6/10
The ASUS ROG Strix G18 and Lenovo Legion 9i are both very good for general use.
PerfectRec’s General Use Score takes into account the many different features of the laptop that make it more or less suitable for general productivity, web browsing, streaming, video calls, and running a wide variety of apps and programs.
Gaming and AI
9.3
9.2
9.9/10
OVERALL GPU SCORE
9.9/10
2560 x 1600
RESOLUTION
3200 x 2000
240Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.2/10
FAN NOISE SCORE
6.5/10
The ASUS ROG Strix G18 and Lenovo Legion 9i are both excellent for gaming and AI.
PerfectRec’s Gaming and AI Score strongly emphasizes graphics processing capability, while also taking into account other factors that impact suitability for gaming and AI work.
Engineering and Design
9.4
9.7
9.9/10
OVERALL CPU SCORE
9.9/10
9.9/10
OVERALL GPU SCORE
9.9/10
32.0 GB
RAM
32.0 GB
Although they have very similar scores, PerfectRec considers Lenovo Legion 9i to be best in class for engineering and design, while the ASUS ROG Strix G18 is excellent.
PerfectRec’s Engineering and Design Score takes into account the many different features of the laptop that make it more or less suitable for graphic design and 3D rendering work.
Content Creation
8.9
8.7
9.9/10
OVERALL CPU SCORE
9.9/10
2560 x 1600
RESOLUTION
3200 x 2000
32.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The ASUS ROG Strix G18 and Lenovo Legion 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
8.3
9.9/10
OVERALL CPU SCORE
9.9/10
32.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3200 x 2000
8.0/10
KEYBOARD QUALITY SCORE
9.0/10
The ASUS ROG Strix G18 and Lenovo Legion 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.
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How the ASUS ROG Strix G18 and the Lenovo Legion 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Strix G18 | Lenovo Legion 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$3,700 | $3,999 | ||
Release Date | |||
Release Date | April 1, 2023 | February 1, 2024 | |
Overall Dimensions | |||
Overall Dimensions | 15.7'' x 11.6'' x 1.06'' | 14.1'' x 10.9'' x 0.89'' | |
Weight | |||
Weight | 6.83 lbs | 5.73 lbs | |
Width | |||
Width | 15.71" | 14.08" | |
Depth | |||
Depth | 11.57" | 10.93" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-13980HX | Intel i9-14900HX | |
RAM | |||
RAM | 32 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 2048 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 3 Hours | |
Battery Capacity | |||
Battery Capacity | 90 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 18" | 16" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 2560 x 1600 | 3200 x 2000 | |
Refresh Rate | |||
Refresh Rate | 240Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 422 nits | 682 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.8/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 5.6/10 | 6.7/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.3/10 | 6.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.6/10 | 9.8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 3 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | 4 | |
Shopping
ASUS ROG Strix G18
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Dig into reviews and images
NotebookCheck
Florian Glaser | March 2023
"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."
Lenovo Legion 9i
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Dig into reviews and images
PCMag
Matthew Buzzi | December 2023
"The Lenovo Legion 9i is meant as a top-end flagship showcase for enthusiasts, and on that, it delivers. You'll find flashier designs in this price tier—Razer’s all-metal build in a similarly sized laptop like the Blade 16, or monstrous 18-inch machines—but this is a well-thought-out laptop. The chassis is trim for a 16-inch powerhouse, the lid is unique, and bespoke liquid cooling takes performance to the next level."
Get a great deal on the ASUS ROG Strix G18 or the Lenovo Legion 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.
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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
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CEO and Laptops Editor
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.
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