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Updated June 22, 2024·
The Dell Alienware m15 R7 is a high-performance gaming laptop with a premium price tag, offering top-tier gaming and engineering capabilities thanks to its AMD Ryzen 9 6900HX processor and Nvidia RTX 3070 Ti graphics card. It has a 15.6-inch QHD display with a 240Hz refresh rate, making it excellent for fast-paced gaming and engineering tasks that require high color accuracy. However, it's heavier and less portable, with a shorter battery life compared to the Lenovo Legion Pro 5i (2024). On the other hand, the Lenovo Legion Pro 5i (2024) is an upper midrange laptop that's significantly less expensive, yet still delivers strong performance with its Intel i7-14700HX and Nvidia RTX 4070. Its larger 16-inch QHD+ display with a 16:10 aspect ratio is great for productivity and general use, and it offers better battery life and portability. While it's also suitable for gaming and engineering tasks, its performance may not quite match the Alienware due to slightly less powerful specs. If you prioritize the best possible performance for gaming and engineering tasks and are willing to pay a premium for it, the Alienware is the way to go. However, if you want a balance of performance, portability, and battery life at a more reasonable price, the Lenovo Legion Pro 5i (2024) is the better 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 Dell Alienware m15 R7
- Very good overall build quality
Advantages of the Lenovo Legion Pro 5i (2024)
- Very good for gaming and AI
Key differences
Gaming and AI
7.8
8.5
8.7/10
OVERALL GPU SCORE
8.9/10
2560 x 1440
RESOLUTION
2560 x 1600
240Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.0/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion Pro 5i (2024) 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
8.7
8.5/10
OVERALL CPU SCORE
9.8/10
8.7/10
OVERALL GPU SCORE
8.9/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion Pro 5i (2024) and Dell Alienware m15 R7 are both very good for engineering and design, though the Lenovo Legion Pro 5i (2024) 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.
Screen Quality
8.2
8.1
15.6in
SIZE
16.0in
2560 x 1440
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
240Hz
REFRESH RATE
165Hz
300.0 nits
BRIGHTNESS
368.0 nits
The Dell Alienware m15 R7 has a better screen than the Lenovo Legion Pro 5i for gaming and AI, while the Lenovo Legion Pro 5i has a better screen for content creation, and software development.
PerfectRec’s screen quality scores take into account various important factors that are relevant for different use cases.
Battery
5.0 Hours
3.5 Hours
The Dell Alienware m15 R7 has 5 hours of battery life. The Lenovo Legion Pro 5i has 3.5 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
7.4
The Dell Alienware m15 R7 has very good build quality, while the Lenovo Legion Pro 5i (2024) has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,200
$1,500
$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 Pro 5i (2024) costs $1,500.
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Key similarities
General Use
7.5
7.8
2560 x 1440
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
300.0 nits
DISPLAY BRIGHTNESS
368.0 nits
5.0 Hours
BATTERY LIFE
3.5 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
6.4/10
PORTABILITY SCORE
6.6/10
The Lenovo Legion Pro 5i (2024) and Dell Alienware m15 R7 are both good for general use.
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.
Content Creation
7.5
7.9
8.5/10
OVERALL CPU SCORE
9.8/10
2560 x 1440
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Pro 5i (2024) and Dell Alienware m15 R7 are both 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
7.3
7.7
8.5/10
OVERALL CPU SCORE
9.8/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
2560 x 1600
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Pro 5i (2024) and Dell Alienware m15 R7 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.
Portability
Fair
Fair
15.6in
SIZE
16.0in
5.9 lbs
WEIGHT
5.6 lbs
0.9in
THICKNESS
0.9in
The Lenovo Legion Pro 5i (2024) and Dell Alienware m15 R7 both have only fair portability.
The most portable laptops are small, thin, and light.
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How the Dell Alienware m15 R7 and the Lenovo Legion Pro 5i (2024) compare to other laptops
Spec Comparison
 |  | |
| Dell Alienware m15 R7 | Lenovo Legion Pro 5i (2024) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,200 | $1,500 | ||
Release Date | |||
Release Date | May 1, 2022 | January 1, 2024 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 10.7'' x 0.94'' | 14.3'' x 10.3'' x 0.97'' | |
Weight | |||
Weight | 5.93 lbs | 5.6 lbs | |
Width | |||
Width | 14.02" | 14.31" | |
Depth | |||
Depth | 10.73" | 10.25" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 6900HX | Intel i7-14700HX | |
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 | 3.5 Hours | |
Battery Capacity | |||
Battery Capacity | 86 Wh | 80 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 | 165Hz | |
Display Brightness | |||
Display Brightness | 300 nits | 368 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 7.4/10 | |
Portability Score | |||
Portability Score | 6.5/10 | 6.6/10 | |
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 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7.5/10 | 7/10 | |
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 | 4 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 2 | 3 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
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."
Lenovo Legion Pro 5i (2024)
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Dig into reviews and images
PCMag
Brian Westover | August 2023
"The midpriced Lenovo Legion Pro 5i Gen 8 follows some of our favorite gaming machines, including last year's model and the higher-end Legion Pro 7i Gen 8 tested earlier this year. But pedigree doesn't count for much in the computer world, and gaming laptops require a certain level of power and graphics performance to justify their prices. The Pro 5i Gen 8 just doesn't do that, offering middling CPU and GPU performance rather than the sort of muscle that would make it a great value."
Get a great deal on the Dell Alienware m15 R7 or the Lenovo Legion Pro 5i (2024)
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.
By the numbers
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