A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
The ASUS ROG Flow X13 offers more portability and slightly longer battery life, making it suitable for those on the move, with sufficient performance for general use, 3D, and engineering tasks. The Lenovo Legion 9i, on the other hand, is a powerhouse with a bigger, higher-resolution display and superior performance that suits intensive tasks like gaming, 3D rendering, and engineering, but it is heavier and has a shorter battery life, making it less portable. If you value performance and screen size over portability and battery life, and don't mind spending more, the Legion 9i could be the better choice. 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 Flow X13
- Very good portability
- 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
- Best in class speakers
- Excellent keyboard
Key differences
Gaming and AI
7.8
9.2
7.4/10
OVERALL GPU SCORE
9.8/10
2560 x 1600
RESOLUTION
3200 x 2000
165Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.2/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion 9i is excellent for gaming and AI, while the ASUS ROG Flow X13 is good.
The Lenovo Legion 9i outperforms the ASUS ROG Flow X13 in gaming and 3D tasks due to its higher-end Nvidia RTX 4080 graphics unit compared to the X13's RTX 4070, and it also boasts a brighter display with superior contrast. While both support similar maximum screen refresh rates, the Legion's Mini LED technology further surpasses the X13's IPS display in color representation and luminance.
Engineering and Design
8.5
9.6
9.2/10
OVERALL CPU SCORE
9.9/10
7.4/10
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 Flow X13 is very good.
The ASUS ROG Flow X13's AMD Ryzen 9 CPU and Nvidia RTX 4070 GPU, combined with its 2-in-1 convertible design and touch-enabled IPS screen, make it suitable for engineering and design, yet its lesser RAM compared to Lenovo Legion 9i may limit the complexity of projects it can handle. The Lenovo Legion 9i boasts a more powerful Intel i9 CPU and Nvidia RTX 4080 GPU, along with superior RAM, and a higher resolution Mini LED display, enhancing its ability to run demanding engineering and design software with improved visual fidelity, but its added performance comes with less portability.
Screen Quality
8.4
9.7
13.4in
SIZE
16.0in
2560 x 1600
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
165Hz
REFRESH RATE
165Hz
511.0 nits
BRIGHTNESS
682.0 nits
The Lenovo Legion 9i has a better screen than the ASUS ROG Flow X13 for general use, gaming and AI, engineering and design, content creation, and software development.
For general use, a laptop screen's clarity, sharpness and ability to display content in various lighting conditions matter, so both the ASUS ROG Flow X13 and Lenovo Legion 9i are favored for their high resolution and brightness. In engineering and design work, accurate color reproduction is critical, making the Lenovo Legion 9i ideal due to its superior coverage of color gamuts like DCI-P3 and Adobe RGB. However, for gaming and 3D applications where smooth motion is crucial, both laptops fall short due to lower refresh rates, which are not as conducive to the fast-paced visuals these tasks often require.
Battery
8.0 Hours
3.0 Hours
The ASUS ROG Flow X13 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
Very Good
Fair
13.4in
SIZE
16.0in
2.8 lbs
WEIGHT
5.6 lbs
0.7in
THICKNESS
1.0in
The ASUS ROG Flow X13 has very good portability, while the Lenovo Legion 9i has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$2,500
$3,420
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS ROG Flow X13 has a price of $2,500 and the Lenovo Legion 9i costs $3,420.
Let Us Help Find Your Perfect Laptop
Find your new laptop
Key similarities
General Use
8.1
8.4
2560 x 1600
RESOLUTION
3200 x 2000
IPS
DISPLAY TECHNOLOGY
Mini LED
511.0 nits
DISPLAY BRIGHTNESS
682.0 nits
8.0 Hours
BATTERY LIFE
3.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
9.0/10
8.7/10
PORTABILITY SCORE
6.3/10
The Lenovo Legion 9i and ASUS ROG Flow X13 are both very good for general use.
The ASUS ROG Flow X13 offers great general usability with its high-end AMD CPU and a solid amount of RAM, coupled with a high-quality, touch-enabled IPS screen that enhances versatility as a 2-in-1 laptop-tablet device, offering good portability and battery life. In comparison, the Lenovo Legion 9i, despite being less portable, excels in power with its top-tier Intel CPU and double the RAM, along with a superior Mini LED display, making it ideal for demanding applications but with a compromise on battery longevity.
Content Creation
8.2
8.7
9.2/10
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 Flow X13 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
8.0
8.3
9.2/10
OVERALL CPU SCORE
9.9/10
16.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3200 x 2000
8.5/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion 9i and ASUS ROG Flow X13 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
8.5
8.5
The ASUS ROG Flow X13 and Lenovo Legion 9i both have very 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 Flow X13 and the Lenovo Legion 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Flow X13 | Lenovo Legion 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,500 | $3,420 | ||
Release Date | |||
Release Date | May 1, 2023 | October 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 11.8'' x 8.4'' x 0.7'' | 14.1'' x 10.9'' x 1.01'' | |
Weight | |||
Weight | 2.87 lbs | 5.64 lbs | |
Width | |||
Width | 11.77" | 14.08" | |
Depth | |||
Depth | 8.35" | 10.93" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 7940HS | Intel i9-13980HX | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 2 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 3 Hours | |
Battery Capacity | |||
Battery Capacity | 75 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 13.4" | 16" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 2560 x 1600 | 3200 x 2000 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 511 nits | 682 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 8.8/10 | 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 | 8.5/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7.5/10 | 9.8/10 | |
Webcam | |||
Webcam | 1080p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 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 | N/A | 4 | |
Shopping
ASUS ROG Flow X13
See more
Dig into reviews and images
NotebookCheck
Sebastian Bade | February 2021
"The Asus ROG Flow X13 is not an off-the-shelf convertible. This quickly becomes clear when you take a closer look at the technical specs. The AMD Ryzen 9 5980HS is a state-of-the-art SoC with 8 cores and 16 threads, which also makes the 2-in-1 interesting as a work device. With 32 GB of RAM and a 1 TB SSD, gamers are also well taken care of. The dedicated Nvidia GeForce GTX 1650 Max-Q fits well into the overall concept and ensures a solid 3D performance. With the eGPU dock, which is equipped with a GeForce RTX 3080, the small convertible transforms into a full-fledged desktop replacement in terms of performance."
Lenovo Legion 9i
See more
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 Flow X13 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.
Give feedback
We're constantly perfecting our model
Laptop guides you might be interested in
More comparisons for you
Compare ASUS ROG Flow X13 vs. ASUS ROG Flow Z13
VS
Compare ASUS ROG Flow X13 vs. ASUS ROG Zephyrus G14VS
Compare ASUS ROG Flow X13 vs. Razer Blade 15VS
Compare Lenovo Legion 9i vs. Apple MacBook Pro 16 (Late 2023)
VS
Compare Lenovo Legion 9i vs. Asus ROG Strix Scar 17 X3DVS
Compare Lenovo Legion 9i vs. ASUS ROG Zephyrus G16 (2024)VS
FAQs
FAQs about laptops
Why trust us
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
170,595
Recommendations made
36,963
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.
Featured in
