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Updated January 10, 2024·
The ASUS ROG Zephyrus G15 is more expensive and offers superior performance with a strong graphics card, making it well-suited for gaming and intensive engineering applications. Conversely, the Lenovo IdeaPad Slim 7i Pro is less expensive, has a better screen resolution and touch capability, and is lighter and thinner, which makes it more portable and suitable for general use. The Lenovo also has superior scores in portability and keyboard quality, while the ASUS excels in battery life and performance for demanding software. Both laptops offer 16GB of RAM, but the ASUS has double the storage space. The decision ultimately hinges on whether you prioritize gaming and heavy workloads or affordability and portability. 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 Zephyrus G15
- Very good for engineering and design
- Good for gaming and AI
- Very good for content creation
- Very good overall build quality
- Best in class speakers
Advantages of the Lenovo IdeaPad Slim 7i Pro
- Very good portability
- Very good keyboard
Key differences
General Use
7.9
7.3
2560 x 1440
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
309.0 nits
DISPLAY BRIGHTNESS
395.0 nits
9.5 Hours
BATTERY LIFE
8.5 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
7.5/10
PORTABILITY SCORE
8.7/10
The ASUS ROG Zephyrus G15 and Lenovo IdeaPad Slim 7i Pro are both good for general use, though the ASUS ROG Zephyrus G15 is somewhat better.
The ASUS ROG Zephyrus G15, with its more powerful AMD Ryzen CPU and dedicated Nvidia graphics card, offers better performance, making it excellent for general use that may include demanding applications and multitasking; however, it's less portable and has shorter battery life compared to the Lenovo IdeaPad Slim 7i Pro, which offers good performance with a less powerful Intel CPU and integrated graphics while being lighter and thinner, hence more portable, but with a lower battery life for general use.
Gaming and AI
7.5
6.1
7.4/10
OVERALL GPU SCORE
3.7/10
2560 x 1440
RESOLUTION
2880 x 1800
165Hz
REFRESH RATE
90Hz
Yes
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
6.5/10
FAN NOISE SCORE
7.5/10
The ASUS ROG Zephyrus G15 is good for gaming and AI, while the Lenovo IdeaPad Slim 7i Pro is only fair.
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
8.0
7.0
7.5/10
OVERALL CPU SCORE
5.0/10
7.4/10
OVERALL GPU SCORE
3.7/10
16.0 GB
RAM
16.0 GB
The ASUS ROG Zephyrus G15 is very good for engineering and design, while the Lenovo IdeaPad Slim 7i Pro is good.
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
8.0
7.4
7.5/10
OVERALL CPU SCORE
5.0/10
2560 x 1440
RESOLUTION
2880 x 1800
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS ROG Zephyrus G15 is very good for content creation, while the Lenovo IdeaPad Slim 7i Pro is good.
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.
Screen Quality
7.9
7.7
15.6in
SIZE
14.0in
2560 x 1440
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
165Hz
REFRESH RATE
90Hz
309.0 nits
BRIGHTNESS
395.0 nits
The ASUS ROG Zephyrus G15 has a better screen than the Lenovo IdeaPad Slim 7i Pro for gaming and AI, and content creation.
For general use, where panel type, resolution, and brightness are key factors, both the ASUS ROG Zephyrus G15 and Lenovo IdeaPad Slim 7i Pro offer displays that are sharp, bright, and with wide viewing angles, providing a comfortable and clear viewing experience for everyday tasks such as browsing and video streaming. In terms of engineering and design, these laptops excel with their color accuracy and range, covering significant portions of DCI-P3 and Adobe RGB color spaces, which is essential for professionals who need precise color reproduction for tasks like photo editing and graphic design. However, for gaming and 3D work, the lower refresh rates on these models limit the smoothness and responsiveness compared to displays optimized for such purposes, making them less ideal for fast-paced, high frame rate experiences.
Portability
Good
Very Good
15.6in
SIZE
14.0in
4.1 lbs
WEIGHT
3.0 lbs
0.7in
THICKNESS
0.6in
The Lenovo IdeaPad Slim 7i Pro has very good portability, while the ASUS ROG Zephyrus G15 has good portability.
The most portable laptops are small, thin, and light.
Build Quality
8.5
7.8
The ASUS ROG Zephyrus G15 has very good build quality, while the Lenovo IdeaPad Slim 7i Pro has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$1,637
$799
$0
$500
$1,000
$1,500
$2,000
$2,500
The ASUS ROG Zephyrus G15 has a price of $1,637 and the Lenovo IdeaPad Slim 7i Pro costs $799.
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Key similarities
Software Development
7.4
7.3
7.5/10
OVERALL CPU SCORE
5.0/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
2880 x 1800
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
The ASUS ROG Zephyrus G15 and Lenovo IdeaPad Slim 7i Pro are both 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.
Battery
9.5 Hours
8.5 Hours
The ASUS ROG Zephyrus G15 has 9.5 hours of battery life. The Lenovo IdeaPad Slim 7i Pro has 8.5 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.
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We’re constantly working to improve.
How the ASUS ROG Zephyrus G15 and the Lenovo IdeaPad Slim 7i Pro compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Zephyrus G15 | Lenovo IdeaPad Slim 7i Pro |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,637 | $799 | ||
Release Date | |||
Release Date | May 1, 2021 | October 1, 2021 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 9.6'' x 0.78'' | 12.3'' x 8.7'' x 0.62'' | |
Weight | |||
Weight | 4.19 lbs | 3.04 lbs | |
Width | |||
Width | 13.98" | 12.29" | |
Depth | |||
Depth | 9.57" | 8.74" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 5900HS | Intel i5-11300H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 4 | |
RAM Slots | |||
RAM Slots | 1 | 0 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 9.5 Hours | 8.5 Hours | |
Battery Capacity | |||
Battery Capacity | 90 Wh | 60.7 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 14" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1440 | 2880 x 1800 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 90Hz | |
Display Brightness | |||
Display Brightness | 309 nits | 395 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 7.8/10 | |
Portability Score | |||
Portability Score | 7.5/10 | 8.8/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 6.5/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.5/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.5/10 | 7.5/10 | |
Webcam | |||
Webcam | No Webcam | 720p | |
Fingerprint Reader | |||
Fingerprint Reader | Yes | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 1 | |
USB-C ports | |||
USB-C ports | 2 | 2 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
ASUS ROG Zephyrus G15
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Dig into reviews and images
NotebookCheck
Florian Glaser | February 2021
"As long as you're aware of the fact that the GeForce RTX 3080 laptop version can only unfold its potential to a limited extent due to Asus's low TDP setting and that it can be slower than a fast RTX 3070 laptop, the ROG Zephyrus G15 GA503Q cuts a fine figure. One of the biggest highlights turns out to be the WQHD panel, since it attracts customers with 165 Hz, relatively fast response times, FreeSync, and good color-space coverage. Other selling points are the surprisingly rich sound, the long battery life, and the sleek design. In terms of looks, the white edition stands out nicely from the competition."
Lenovo IdeaPad Slim 7i Pro
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Dig into reviews and images
NotebookCheck
Allen Ngo | October 2021
"The main selling point of the IdeaPad Slim 7i Pro versus a regular IdeaPad Slim 7 is its faster Core H-series CPU. In reality, the Core i7-11370H is only marginally faster than the U-series Core i7-1165G7 to the point where most users are not likely to notice the benefits. The slight performance uptick comes at the cost of slightly higher power consumption as well meaning owners will have to deal with potentially warmer temperatures or louder fans to compensate. Unless if you happen to be a power user, then the regular non-Pro model will be more than enough. Once you go 90 Hz, you can't go back."
Get a great deal on the ASUS ROG Zephyrus G15 or the Lenovo IdeaPad Slim 7i Pro
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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