A comparison of specs, key information, reviews, and best pricing from top retailers
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Updated January 10, 2024·
The ASUS ROG Zephyrus G15 offers a higher resolution display, better screen colors, and significantly longer battery life, making it ideal for users who need clearer visuals and mobility without constantly seeking power outlets. However, the MSI GP66 Leopard has a more powerful graphics card which may be preferred for the most demanding 3D rendering, machine learning tasks, and intensive gaming but comes with the tradeoff of a shorter battery life and a heavier build which affects portability. Both have similar processing power and memory, making them capable for general use and engineering, but if portability and display quality are essential for you, consider the ASUS; for top-tier gaming performance at the cost of battery life and weight, the MSI could be your 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 Zephyrus G15
- Very good for engineering and design
- Very good for content creation
- Good portability
- Good battery life
- Best in class speakers
Advantages of the MSI GP66 Leopard
- Very good keyboard
Key differences
Content Creation
8.0
7.4
7.5/10
OVERALL CPU SCORE
7.4/10
2560 x 1440
RESOLUTION
1920 x 1080
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS ROG Zephyrus G15 is very good for content creation, while the MSI GP66 Leopard 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
7.5
15.6in
SIZE
15.6in
2560 x 1440
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
165Hz
REFRESH RATE
144Hz
309.0 nits
BRIGHTNESS
362.0 nits
The ASUS ROG Zephyrus G15 has a better screen than the MSI GP66 Leopard for general use, gaming and AI, engineering and design, and content creation.
For general use, the ASUS ROG Zephyrus G15's high resolution and brightness offer clear and vibrant visuals, whereas the MSI GP66 Leopard, with slightly less impressive brightness and resolution, provides a sufficiently pleasant viewing experience. For engineering and design, the Zephyrus G15's broader color gamut ensures more accurate color representation, which is crucial for detailed work, whereas the Leopard's color range is decent but not as extensive. For gaming and 3D applications, the lower refresh rates of both laptops mean less fluid motion and response times, with the Zephyrus and Leopard both falling short for the most immersive and competitive gaming experiences.
Battery
9.5 Hours
5.0 Hours
The ASUS ROG Zephyrus G15 has 9.5 hours of battery life. The MSI GP66 Leopard has 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.
Portability
Good
Fair
15.6in
SIZE
15.6in
4.1 lbs
WEIGHT
5.2 lbs
0.7in
THICKNESS
0.9in
The ASUS ROG Zephyrus G15 has good portability, while the MSI GP66 Leopard has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$1,637
$1,400
$500
$1,000
$1,500
$2,000
$2,500
The ASUS ROG Zephyrus G15 has a price of $1,637 and the MSI GP66 Leopard costs $1,400.
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Key similarities
General Use
7.9
7.5
2560 x 1440
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
309.0 nits
DISPLAY BRIGHTNESS
362.0 nits
9.5 Hours
BATTERY LIFE
5.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
7.5/10
PORTABILITY SCORE
6.8/10
The ASUS ROG Zephyrus G15 and MSI GP66 Leopard are both good for general use.
The ASUS ROG Zephyrus G15 offers superb portability and battery life, thus scoring higher for general use with its efficient CPU, ample RAM, high-quality display, and lighter weight, making it well-suited for users on the go who need longevity and performance. The MSI GP66 Leopard, while also a solid choice for general use with comparable RAM and a powerful CPU, falls short in battery life and portability but offers a substantial graphics unit, which could benefit users with more stationary, graphics-intensive workloads.
Gaming and AI
7.5
7.8
7.4/10
OVERALL GPU SCORE
8.7/10
2560 x 1440
RESOLUTION
1920 x 1080
165Hz
REFRESH RATE
144Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
6.5/10
FAN NOISE SCORE
6.5/10
The MSI GP66 Leopard and ASUS ROG Zephyrus G15 are both good for gaming and AI.
The ASUS ROG Zephyrus G15 and the MSI GP66 Leopard are excellent choices for gaming and 3D applications due to their powerful GPUs and high screen refresh rates; with ASUS featuring an Nvidia RTX 3070 and a refresh rate of 165Hz, and MSI boasting a more robust Nvidia RTX 3080 but with a slightly lower refresh rate of 144Hz. In terms of screen quality and CPU, both have comparable displays and capable CPUs, ensuring smooth gameplay and efficient 3D processing.
Engineering and Design
8.0
7.9
7.5/10
OVERALL CPU SCORE
7.4/10
7.4/10
OVERALL GPU SCORE
8.7/10
16.0 GB
RAM
16.0 GB
Although they have very similar scores, PerfectRec considers ASUS ROG Zephyrus G15 to be very good for engineering and design, while the MSI GP66 Leopard 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.
Software Development
7.4
7.2
7.5/10
OVERALL CPU SCORE
7.4/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
1920 x 1080
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
The ASUS ROG Zephyrus G15 and MSI GP66 Leopard 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.
Build Quality
8.5
8.0
The ASUS ROG Zephyrus G15 and MSI GP66 Leopard both have very good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
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How the ASUS ROG Zephyrus G15 and the MSI GP66 Leopard compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Zephyrus G15 | MSI GP66 Leopard |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,637 | $1,400 | ||
Release Date | |||
Release Date | May 1, 2021 | May 1, 2021 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 9.6'' x 0.78'' | 14.1'' x 10.5'' x 0.92'' | |
Weight | |||
Weight | 4.19 lbs | 5.25 lbs | |
Width | |||
Width | 13.98" | 14.09" | |
Depth | |||
Depth | 9.57" | 10.51" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 5900HS | Intel i7-11800H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 4 | |
RAM Slots | |||
RAM Slots | 1 | 2 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 9.5 Hours | 5 Hours | |
Battery Capacity | |||
Battery Capacity | 90 Wh | 65 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 15.6" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1440 | 1920 x 1080 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 144Hz | |
Display Brightness | |||
Display Brightness | 309 nits | 362 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 8/10 | |
Portability Score | |||
Portability Score | 7.5/10 | 6.9/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 6.5/10 | 6.5/10 | |
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 | 3 | |
USB-C ports | |||
USB-C ports | 2 | 0 | |
USB-C Charging | |||
USB-C Charging | Yes | No | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
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."
MSI GP66 Leopard
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Dig into reviews and images
NotebookCheck
Christian Hintze | December 2021
"The MSI GP66 Leopard is a good budget high-performance gamer. The MSI also does a lot right outside of the pure performance despite it's low price. For example, the adaptive cooling system really surprised us positively, even in Extreme Performance Mode. And the display is not a budget panel either, but at least outshines the competition in terms of brightness. Of course, you also have to accept a few compromises in this price category. These include the Leopard's poor battery runtimes and the less than optimal build quality, which is also noticeable in the more complicated maintenance."
Get a great deal on the ASUS ROG Zephyrus G15 or the MSI GP66 Leopard
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 MSI
MSI, also known as Micro-Star International, is a Taiwanese technology corporation. MSI is known for their wide range of gaming devices. Their series include the entry-level Cyborg/Thin and Sword/Katana series, the mid-range Bravo/Delta and Crosshair/Pulse series, and their high-end Vector, Raider, Stealth, and Titan GT series. At every performance level, MSI offers a variety of devices with varying balances between performance, battery life, weight, and price, making them a solid option to consider at every price point.
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