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·
Given your situation, you'll want to consider several factors between the ASUS ROG Flow X13 and the Lenovo Slim Pro 9i. The ASUS offers a powerful AMD Ryzen processor, excellent for 3D rendering, machine learning, and it's more suitable for gaming due to its higher-end Nvidia RTX 4070 graphics card. It also has a higher portability score, making it easier to carry around. On the other hand, the Lenovo has a higher screen resolution and greater color accuracy, desirable for engineering tasks or creative work that demands precise colors. It features an Intel processor and RTX 4050, which is slightly less powerful than the ASUS's graphics but still capable for demanding tasks. The Lenovo also has double the RAM of the ASUS, helping with multitasking and complex applications. Both have similar battery life. If budget allows, the premium-priced ASUS offers strong performance across a wide range of activities, including gaming; whereas the Lenovo, at a slightly lower price, provides a high-quality screen and more memory for heavy multitasking and precision tasks. 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
Advantages of the Lenovo Slim Pro 9i
- Best in class overall display quality
- Very good speakers
Key differences
Screen Quality
8.4
9.6
13.4in
SIZE
14.5in
2560 x 1600
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
165Hz
REFRESH RATE
165Hz
511.0 nits
BRIGHTNESS
618.0 nits
The Lenovo Slim Pro 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.
The Lenovo Slim Pro 9i boasts superior screen characteristics like resolution and brightness, which are vital for activities such as browsing, video streaming, and document work, ensuring texts appear sharper and images more vivid, enhancing the general use experience. For engineering and design professionals who require accurate color reproduction, the Lenovo's excellent coverage of color gamuts like DCI-P3 and Adobe RGB means that designs and images will display true-to-life colors. However, for gaming and 3D applications that benefit from fluid motion, the lower refresh rates of both laptops' displays make them less ideal, despite their strong performance in other areas.
Battery
8.0 Hours
6.0 Hours
The ASUS ROG Flow X13 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
Very Good
Good
13.4in
SIZE
14.5in
2.8 lbs
WEIGHT
3.7 lbs
0.7in
THICKNESS
0.8in
The ASUS ROG Flow X13 has very good portability, while the Lenovo Slim Pro 9i has good portability.
The most portable laptops are small, thin, and light.
Cost
$2,587
$1,600
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The ASUS ROG Flow X13 has a price of $2,587 and the Lenovo Slim Pro 9i costs $1,600.
Let Us Help Find Your Perfect Laptop
Find your new laptop
Key similarities
General Use
8.1
8.5
2560 x 1600
RESOLUTION
3072 x 1920
IPS
DISPLAY TECHNOLOGY
Mini LED
511.0 nits
DISPLAY BRIGHTNESS
618.0 nits
8.0 Hours
BATTERY LIFE
6.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
8.7/10
PORTABILITY SCORE
7.6/10
The Lenovo Slim Pro 9i and ASUS ROG Flow X13 are both very good for general use.
The ASUS ROG Flow X13 and the Lenovo Slim Pro 9i are both excellent for general use due to their powerful CPUs, substantial RAM, and high-quality screens. However, the ASUS is less portable and has lower battery life compared to the Slim Pro 9i, which offers greater portability and longer battery life, making the Lenovo a better option for those prioritizing mobility and usage away from power sources.
Gaming and AI
7.8
7.6
7.4/10
OVERALL GPU SCORE
6.9/10
2560 x 1600
RESOLUTION
3072 x 1920
165Hz
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 Flow X13 and Lenovo Slim Pro 9i are both good for gaming and AI.
The ASUS ROG Flow X13, with an Nvidia RTX 4070 GPU and a high refresh rate display, offers robust gaming and 3D performance, suitable for demanding visual tasks. In comparison, the Lenovo Slim Pro 9i features an Nvidia RTX 4050 GPU and a similar high refresh rate display, with the added advantage of a higher resolution Mini LED screen, which may offer better screen quality for a visually rich gaming and 3D experience.
Engineering and Design
8.5
8.9
9.2/10
OVERALL CPU SCORE
9.0/10
7.4/10
OVERALL GPU SCORE
6.9/10
16.0 GB
RAM
32.0 GB
The Lenovo Slim Pro 9i and ASUS ROG Flow X13 are both very good for engineering and design.
The Lenovo Slim Pro 9i is excellent for engineering and design due to its higher RAM, advanced Mini LED screen with better display capabilities, and a more color-accurate panel compared to the ASUS ROG Flow X13 which, while very good, has less RAM and a standard IPS screen. Although the ASUS has a high-performance CPU and GPU combo, the Lenovo's equivalent CPU, slightly less robust GPU, additional RAM, and superior display quality give it an edge for engineering tasks where multitasking and high-quality visuals are paramount.
Content Creation
8.2
8.5
9.2/10
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 Lenovo Slim Pro 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
9.0/10
16.0 GB
RAM
32.0 GB
2560 x 1600
RESOLUTION
3072 x 1920
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo Slim Pro 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
8.0
The ASUS ROG Flow X13 and Lenovo Slim Pro 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 Slim Pro 9i compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Flow X13 | Lenovo Slim Pro 9i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,587 | $1,600 | ||
Release Date | |||
Release Date | May 1, 2023 | February 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 11.8'' x 8.4'' x 0.7'' | 12.9'' x 9.6'' x 0.85'' | |
Weight | |||
Weight | 2.87 lbs | 3.7 lbs | |
Width | |||
Width | 11.77" | 12.9" | |
Depth | |||
Depth | 8.35" | 9.64" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 7940HS | Intel i7-13705H | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 0 | 0 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 6 Hours | |
Battery Capacity | |||
Battery Capacity | 75 Wh | 75 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 13.4" | 14.5" | |
Display Technology | |||
Display Technology | IPS | Mini LED | |
Resolution | |||
Resolution | 2560 x 1600 | 3072 x 1920 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 511 nits | 618 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 8/10 | |
Portability Score | |||
Portability Score | 8.8/10 | 7.7/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.3/10 | 8/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7.5/10 | 8/10 | |
Webcam | |||
Webcam | 1080p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 2 | |
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 Slim Pro 9i
See more
Dig into reviews and images
PCWorld
Matthew S. Smith | August 2023
"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 Flow X13 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.
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. Dell Alienware m18 R1
VS
Compare ASUS ROG Flow X13 vs. ASUS ROG Strix G18 (2024)
VS
Compare ASUS ROG Flow X13 vs. Apple MacBook Pro 14 (2023)
VS
Compare Lenovo Slim Pro 9i vs. Acer Predator Triton 300
VS
Compare Lenovo Slim Pro 9i vs. ASUS ROG Flow X13
VS
Compare Lenovo Slim Pro 9i vs. ASUS ROG Zephyrus G14
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
96,795
Recommendations made
20,973
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
