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Updated January 10, 2024·
The MSI Stealth GS66 is lighter and more portable than the GS77, which may be important if you often carry your laptop around. However, the GS77 offers a larger screen with a higher resolution, which is better for tasks that benefit from more screen real estate, like video editing or gaming. The GS77 also has double the storage and memory, which can significantly improve performance in memory-intensive tasks or when multitasking. In summary, if portability is key for you, the GS66 has an edge, while the GS77 excels in display quality, storage, and multitasking capability. 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 MSI Stealth GS66
- Good portability
Advantages of the MSI Stealth GS77
- Very good for general use
- Very good for software development
- Very good for content creation
- Good battery life
Key differences
General Use
7.7
8.4
1920 x 1080
RESOLUTION
2560 x 1440
IPS
DISPLAY TECHNOLOGY
IPS
280.0 nits
DISPLAY BRIGHTNESS
305.0 nits
5.5 Hours
BATTERY LIFE
6.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
7.5/10
PORTABILITY SCORE
6.4/10
The MSI Stealth GS77 is very good for general use, while the MSI Stealth GS66 is good.
The MSI Stealth GS66, with a balance of performance from a solid CPU and ample RAM, stands out for everyday tasks, complemented by its screen quality and easier portability due to its size and weight; however, its battery life might not last as long as some users require. The larger MSI Stealth GS77 offers a similar level of performance with a potentially better screen and a more sizable battery, making it a strong option for extended use, although it sacrifices portability, being bulkier and heavier.
Engineering and Design
8.2
8.7
9.1/10
OVERALL CPU SCORE
9.1/10
7.8/10
OVERALL GPU SCORE
7.8/10
16.0 GB
RAM
32.0 GB
The MSI Stealth GS77 and MSI Stealth GS66 are both very good for engineering and design, though the MSI Stealth GS77 is somewhat better.
The MSI Stealth GS66 excels in engineering and design use due to its capable processor and high-end GPU, along with a high refresh rate screen which is good for fluid visuals; however, it has less RAM and storage compared to the MSI Stealth GS77, which not only offers more working memory and storage capacity beneficial for large projects but also provides a larger, higher-resolution display for more detailed work. While both laptops are quite portable, the GS77's larger screen and slightly heavier build make it less portable than the smaller GS66, though the tradeoff might be worthwhile for the added screen real estate and resolution.
Content Creation
7.7
8.3
9.1/10
OVERALL CPU SCORE
9.1/10
1920 x 1080
RESOLUTION
2560 x 1440
16.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The MSI Stealth GS77 is very good for content creation, while the MSI Stealth GS66 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.
Software Development
7.5
8.1
9.1/10
OVERALL CPU SCORE
9.1/10
16.0 GB
RAM
32.0 GB
1920 x 1080
RESOLUTION
2560 x 1440
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
The MSI Stealth GS77 is very good for software development, while the MSI Stealth GS66 is good.
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.
Screen Quality
8.1
8.3
15.6in
SIZE
17.3in
1920 x 1080
RESOLUTION
2560 x 1440
IPS
DISPLAY TECHNOLOGY
IPS
360Hz
REFRESH RATE
240Hz
280.0 nits
BRIGHTNESS
305.0 nits
The MSI Stealth GS77 has a better screen than the MSI Stealth GS66 for general use, engineering and design, content creation, and software development.
The MSI Stealth GS66, with its good combination of resolution and panel type, provides clear and vibrant images suitable for everyday tasks and engineering work, while its average brightness ensures comfortable viewing in most indoor scenarios. For engineering and design professionals, the decent coverage of color gamuts like DCI-P3 and Adobe RGB on the GS66 allows for precise color work, although it may not satisfy the highest industry standards for color accuracy. However, the lower refresh rate hinders the gaming and 3D experience on the GS66 as it can't deliver as smooth motion rendering as a higher refresh rate display would, which is especially noticeable in fast-paced games or high-speed 3D simulations.
Portability
Good
Fair
15.6in
SIZE
17.3in
4.6 lbs
WEIGHT
6.1 lbs
0.7in
THICKNESS
0.7in
The MSI Stealth GS66 has good portability, while the MSI Stealth GS77 has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$1,799
$2,499
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
The MSI Stealth GS66 has a price of $1,799 and the MSI Stealth GS77 costs $2,499.
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Key similarities
Gaming and AI
7.8
7.9
7.8/10
OVERALL GPU SCORE
7.8/10
1920 x 1080
RESOLUTION
2560 x 1440
360Hz
REFRESH RATE
240Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.5/10
FAN NOISE SCORE
7.5/10
The MSI Stealth GS77 and MSI Stealth GS66 are both good for gaming and AI.
The MSI Stealth GS66 boasts a higher screen refresh rate, beneficial for smoother visuals in fast-paced games, while the MSI Stealth GS77, despite having a slightly lower refresh rate, offers a larger, higher resolution display that provides sharper images, which can enhance the gaming and 3D experience. Both models feature the same powerful GPU which is vital for gaming performance and 3D rendering tasks.
Battery
5.5 Hours
6.0 Hours
The MSI Stealth GS66 has 5.5 hours of battery life. The MSI Stealth GS77 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.
Build Quality
8.0
8.0
The MSI Stealth GS66 and MSI Stealth GS77 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 MSI Stealth GS66 and the MSI Stealth GS77 compare to other laptops
Spec Comparison
 |  | |
| MSI Stealth GS66 | MSI Stealth GS77 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,799 | $2,499 | ||
Release Date | |||
Release Date | April 1, 2022 | May 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.7'' x 0.71'' | 15.7'' x 11.2'' x 0.79'' | |
Weight | |||
Weight | 4.63 lbs | 6.17 lbs | |
Width | |||
Width | 14.17" | 15.65" | |
Depth | |||
Depth | 9.65" | 11.16" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-12700H | Intel i7-12700H | |
RAM | |||
RAM | 16 GB | 32 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 512 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 5.5 Hours | 6 Hours | |
Battery Capacity | |||
Battery Capacity | 99.9 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 17.3" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1440 | |
Refresh Rate | |||
Refresh Rate | 360Hz | 240Hz | |
Display Brightness | |||
Display Brightness | 280 nits | 305 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8/10 | 8/10 | |
Portability Score | |||
Portability Score | 7.5/10 | 6.5/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.5/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 8/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 2 | |
USB-C ports | |||
USB-C ports | 3 | 2 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 4 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | 4 | |
Shopping
MSI Stealth GS66
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Dig into reviews and images
NotebookCheck
Florian Glaser | February 2022
"The MSI Stealth GS66 is powerful enough for QHD. The Core i7-12700H and the GeForce RTX 3070 Ti found in the 12UGS model that we tested run all modern games smoothly in the native QHD resolution. The 15-inch display is very fast with its 240 Hz refresh rate, and it also offers a great color space (almost 100% DCI-P3) on top of that, which should please gamers as well as content creators, although we would have still wished for a higher brightness. Case, input devices, and connectivity (Thunderbolt 4) are at a good level. However, among other things, the GS66 loses points due to the high temperature development in 3D mode and its poor webcam."
MSI Stealth GS77
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Dig into reviews and images
NotebookCheck
Allen Ngo | April 2022
"The MSI Stealth GS77 is better than the GS76... mostly. The GS77 is a few steps forward and a few steps back from the GS76. Improvements are numerous including the stronger and more rigid skeleton, higher resolution webcam, larger clickpad, easier serviceability, relatively similar battery runtimes, newer display options, and higher performance at about the same TDP and TGP levels as before. CPU performance is better than expected even when compared to other laptops with Core i7 or Core i9 processors. The newer model feels more substantial than the outgoing one for higher quality impressions as well."
Get a great deal on the MSI Stealth GS66 or the MSI Stealth GS77
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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