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What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
For better performance in 3D rendering, machine learning, and intensive gaming, the Lenovo Legion 9i with more robust graphics and extra RAM stands out, and it also has a higher-quality display which is important if color accuracy or visual detail is a priority. However, it is heavier and comes at a higher price. In contrast, while the ASUS ROG Strix G18 also delivers strong performance and is priced lower, it is less portable due to its heavier weight and larger screen size. If battery life and costs are significant considerations for you, the ASUS may be the more favorable option despite some concessions in graphics power and display quality. 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
- Good battery life
Advantages of the Lenovo Legion 9i
- Best in class for engineering and design
- Excellent for gaming and AI
- Best in class overall display quality
- Very good overall build quality
- Excellent keyboard
Key differences
Engineering and Design
8.9
9.6
9.9/10
OVERALL CPU SCORE
9.9/10
8.9/10
OVERALL GPU SCORE
9.8/10
16.0 GB
RAM
32.0 GB
The Lenovo Legion 9i is best in class for engineering and design, while the ASUS ROG Strix G18 is very good.
The Lenovo Legion 9i stands out for engineering and design due to its more powerful Nvidia RTX 4080 GPU and higher RAM capacity, ensuring smoother performance with intensive software, whereas the ASUS ROG Strix G18, while still formidable with its RTX 4070 GPU and substantial RAM, offers slightly less computational power. Additionally, the Legion 9i's Mini LED screen with higher resolution provides richer visual detail and more vibrant colors which are crucial for design work, compared to the IPS screen of the ASUS ROG Strix G18.
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 Lenovo Legion 9i has a better screen than the ASUS ROG Strix G18 for general use, gaming and AI, engineering and design, and content creation.
The Lenovo Legion 9i offers superior visual clarity and brightness which is ideal for everyday tasks and professional design work, along with a wider color range that ensures more accurate color representation crucial for engineering and design applications. The ASUS ROG Strix G18, while providing a good overall visual experience, falls short because it may not deliver the same level of brightness and color precision. For gaming and 3D work, both laptops have lower refresh rates, which could lead to less smooth visuals and might not be as suitable for fast-paced gaming or rendering when compared to models with higher refresh rates.
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
6.6 lbs
WEIGHT
5.6 lbs
1.0in
THICKNESS
1.0in
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
$1,900
$3,420
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS ROG Strix G18 has a price of $1,900 and the Lenovo Legion 9i costs $3,420.
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Key similarities
General Use
8.3
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
6.3/10
The Lenovo Legion 9i and ASUS ROG Strix G18 are both very good for general use.
The ASUS ROG Strix G18 features a vibrant IPS screen and a high-capacity battery, suitable for those needing long battery life and a large, clear display, but its size affects portability. In contrast, the Lenovo Legion 9i, with a sharper Mini LED screen and more RAM, enhances multitasking and visual precision at the cost of slightly shorter battery life, but gains in portability due to its lighter weight.
Gaming and AI
8.7
9.2
8.9/10
OVERALL GPU SCORE
9.8/10
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
Although they have very similar scores, PerfectRec considers Lenovo Legion 9i to be excellent for gaming and AI, while the ASUS ROG Strix G18 is very good.
The ASUS ROG Strix G18 features a high refresh rate display and a robust Nvidia RTX 4070 GPU, making it very well-suited for gaming and 3D applications. On the other hand, the Lenovo Legion 9i comes with an even more powerful Nvidia RTX 4080 GPU and a Mini LED screen that offers a higher resolution and brightness, thus providing an exceptional gaming and 3D experience.
Content Creation
8.6
8.7
9.9/10
OVERALL CPU SCORE
9.9/10
2560 x 1600
RESOLUTION
3200 x 2000
16.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
Mini LED
The Lenovo Legion 9i and ASUS ROG Strix G18 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
8.3
9.9/10
OVERALL CPU SCORE
9.9/10
16.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3200 x 2000
8.0/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion 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.
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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 | |||
$1,900 | $3,420 | ||
Release Date | |||
Release Date | April 1, 2023 | October 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 15.7'' x 11.6'' x 1.06'' | 14.1'' x 10.9'' x 1.01'' | |
Weight | |||
Weight | 6.61 lbs | 5.64 lbs | |
Width | |||
Width | 15.71" | 14.08" | |
Depth | |||
Depth | 11.57" | 10.93" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-13980HX | Intel i9-13980HX | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 1024 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 | 5.7/10 | 6.4/10 | |
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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