A comparison of specs, key information, reviews, and best pricing from top retailers
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Company ProductName Specs
Company ProductName Specs
Advantages of the Dell Alienware m15 R7
- The Dell Alienware m15 R7 has no clear advantages over the Lenovo Legion 7i.
Advantages of the Lenovo Legion 7i
- Very good for general use
- Very good for gaming and AI
- Very good for content creation
- Good portability
- Best in class speakers
- Excellent keyboard
Key differences
General Use
7.5
8.1
2560 x 1440
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
300.0 nits
DISPLAY BRIGHTNESS
500.0 nits
5.0 Hours
BATTERY LIFE
5.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
9.0/10
6.4/10
PORTABILITY SCORE
7.2/10
The Lenovo Legion 7i is very good for general use, while the Dell Alienware m15 R7 is good.
PerfectRec’s General Use Score takes into account the many different features of the laptop that make it more or less suitable for general productivity, web browsing, streaming, video calls, and running a wide variety of apps and programs.
Gaming and AI
7.8
8.7
8.7/10
OVERALL GPU SCORE
8.9/10
2560 x 1440
RESOLUTION
2560 x 1600
240Hz
REFRESH RATE
240Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.0/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion 7i is very good for gaming and AI, while the Dell Alienware m15 R7 is good.
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
8.2
8.9
8.5/10
OVERALL CPU SCORE
9.9/10
8.7/10
OVERALL GPU SCORE
8.9/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion 7i and Dell Alienware m15 R7 are both very good for engineering and design, though the Lenovo Legion 7i is somewhat better.
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
7.5
8.3
8.5/10
OVERALL CPU SCORE
9.9/10
2560 x 1440
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion 7i is very good for content creation, while the Dell Alienware m15 R7 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
7.3
7.9
8.5/10
OVERALL CPU SCORE
9.9/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
2560 x 1600
8.5/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion 7i and Dell Alienware m15 R7 are both good for software development, though the Lenovo Legion 7i is somewhat better.
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
8.2
8.7
15.6in
SIZE
16.0in
2560 x 1440
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
240Hz
REFRESH RATE
240Hz
300.0 nits
BRIGHTNESS
500.0 nits
The Lenovo Legion 7i has a better screen than the Dell Alienware m15 R7 for general use, gaming and AI, engineering and design, content creation, and software development.
PerfectRec’s screen quality scores take into account various important factors that are relevant for different use cases.
Portability
Fair
Good
15.6in
SIZE
16.0in
5.9 lbs
WEIGHT
4.9 lbs
0.9in
THICKNESS
0.7in
The Lenovo Legion 7i has good portability, while the Dell Alienware m15 R7 has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$2,200
$1,605
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The Dell Alienware m15 R7 has a price of $2,200 and the Lenovo Legion 7i costs $1,605.
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Key similarities
Battery
5.0 Hours
5.0 Hours
The Dell Alienware m15 R7 has 5 hours of battery life. The Lenovo Legion 7i 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.
Build Quality
8.5
8.5
The Dell Alienware m15 R7 and Lenovo Legion 7i 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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We’re constantly working to improve.
How the Dell Alienware m15 R7 and the Lenovo Legion 7i compare to other laptops
Spec Comparison
 |  | |
| Dell Alienware m15 R7 | Lenovo Legion 7i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,200 | $1,605 | ||
Release Date | |||
Release Date | May 1, 2022 | March 1, 2024 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 10.7'' x 0.94'' | 14.1'' x 10.3'' x 0.78'' | |
Weight | |||
Weight | 5.93 lbs | 4.94 lbs | |
Width | |||
Width | 14.02" | 14.08" | |
Depth | |||
Depth | 10.73" | 10.33" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 6900HX | Intel i9-14900HX | |
RAM | |||
RAM | 16 GB | 16 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 Hours | 5 Hours | |
Battery Capacity | |||
Battery Capacity | 86 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1440 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 240Hz | 240Hz | |
Display Brightness | |||
Display Brightness | 300 nits | 500 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 6.5/10 | 7.2/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7/10 | 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 | 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 | 3 | 2 | |
USB-C ports | |||
USB-C ports | 1 | 3 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 2 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
Dell Alienware m15 R7
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Dig into reviews and images
Tom's Hardware
Brandon Hill | October 2022
"The Alienware M15 offers solid gaming and leading endurance. It makes the most of its CPU and GPU while delivering stellar battery life for a gaming laptop. Opening the lid presents a full-size keyboard with honeycomb cutouts above it on the deck. An oblong RBG lightning element surrounds the entire rear panel and can be color-synced with the other lights on the laptop. There’s not a lot to dislike about the M15 Its productivity performance lagged in some areas, particularly in the storage benchmark, and it’s a bit heavy. Alienware has a clear winner here with the M15 based on its strong overall performance and endurance."
Get a great deal on the Dell Alienware m15 R7 or the Lenovo Legion 7i
About Dell
Dell is a highly recognizable American technology company, and is one of the largest personal computer vendor by market share. Their laptops are very popular for both personal and professional use, and they also own the Alienware brand which makes mid to high end gaming laptops. Their premium XPS range of laptops offer great build quality and portability, while Latitude and Precision laptops are known for reliability, repairability and performance for business users.
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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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.
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About the laptop team
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CEO and Laptops Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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Staff Expert & Software Engineer
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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.
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