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What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
For intensive engineering tasks, 3D rendering, machine learning, or gaming, the Dell Alienware m15 R7 offers higher performance due to its more powerful AMD processor and Nvidia RTX 3070 Ti graphics card. The Lenovo Legion 5i Pro, while less expensive, provides good performance with an Intel i7 processor and Nvidia RTX 4060 graphics, and it has a screen with a taller aspect ratio which can be beneficial for productivity tasks. However, the Alienware has a higher screen refresh rate beneficial for fast-paced gaming. If you prefer a laptop that's lighter and a bit more portable, the Lenovo is the lighter of the two. Both have sufficient RAM and storage for general use, but the Alienware has a slightly better battery life for typical usage. If budget is a consideration, the Lenovo offers a balance between cost and performance, while the Alienware is positioned as a premium product with a higher price that matches its performance capabilities. 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
- Very good for gaming and AI
Key differences
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.
For general use, both the Dell Alienware m15 R7 and the Lenovo Legion Pro 5i offer high resolution and brightness, making texts sharp and the display easy to view in various lighting conditions. In engineering and design, these laptops provide wide color gamuts, essential for accurate color reproduction and detailed visuals needed for precise work. However, for gaming and 3D applications, their screens have lower refresh rates, which can result in less fluid motion and a less responsive experience during fast-paced activities.
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 has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,200
$1,000
$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 costs $1,000.
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Key similarities
General Use
7.5
7.5
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 and Dell Alienware m15 R7 are both good for general use.
The Dell Alienware m15 R7 offers a powerful AMD Ryzen 9 CPU and high-refresh-rate screen, making it suitable for fast and smooth operation in general use, but its battery life and portability are limited. The Lenovo Legion 5i Pro, on the other hand, also has a capable Intel i7 CPU and a high pixel density display that delivers sharp visuals, but it too has moderate battery life and is slightly more portable, yet still hefty, making them both adept at handling general computing tasks with consideration for occasional mobility.
Gaming and AI
7.8
8.0
8.7/10
OVERALL GPU SCORE
8.5/10
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
Although they have very similar scores, PerfectRec considers Lenovo Legion Pro 5i to be 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
8.4
8.5/10
OVERALL CPU SCORE
9.6/10
8.7/10
OVERALL GPU SCORE
8.5/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion Pro 5i and Dell Alienware m15 R7 are both very good for engineering and design.
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
7.6
8.5/10
OVERALL CPU SCORE
9.6/10
2560 x 1440
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Pro 5i 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
7.5
8.5/10
OVERALL CPU SCORE
9.6/10
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 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 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 compare to other laptops
Spec Comparison
 |  | |
| Dell Alienware m15 R7 | Lenovo Legion Pro 5i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,200 | $1,000 | ||
Release Date | |||
Release Date | May 1, 2022 | March 1, 2023 | |
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 i7-13700HX | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 512 GB | 512 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
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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
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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