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What we think
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Updated January 10, 2024·
The Dell Alienware m15 R7 is a premium, high-performance laptop with a powerful AMD processor and Nvidia RTX graphics, making it well-suited for gaming, 3D rendering, and engineering tasks. It's also quite hefty, which may impact portability, and it has a shorter battery life, so frequent charging might be necessary. On the other hand, the Lenovo IdeaPad Slim 7i Pro is more affordable and offers excellent portability with a lighter build and longer battery life, but it has an Intel integrated GPU which is less capable for intensive tasks. The IdeaPad is a great choice for general use and has a higher-resolution touch display, which could be a plus for productivity tasks and media consumption. 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 for engineering and design
- Good for gaming and AI
- Very good overall display quality
- Very good overall build quality
Advantages of the Lenovo IdeaPad Slim 7i Pro
- Very good portability
- Good battery life
Key differences
Gaming and AI
7.8
6.1
8.7/10
OVERALL GPU SCORE
3.7/10
2560 x 1440
RESOLUTION
2880 x 1800
240Hz
REFRESH RATE
90Hz
Yes
SUPPORTS DLSS
No
Yes
MUX SWITCH / ADVANCED OPTIMUS
No
7.0/10
FAN NOISE SCORE
7.5/10
The Dell Alienware m15 R7 is good for gaming and AI, while the Lenovo IdeaPad Slim 7i Pro is only fair.
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
7.0
8.5/10
OVERALL CPU SCORE
5.0/10
8.7/10
OVERALL GPU SCORE
3.7/10
16.0 GB
RAM
16.0 GB
The Dell Alienware m15 R7 is very good for engineering and design, while the Lenovo IdeaPad Slim 7i Pro is good.
The Dell Alienware m15 R7 stands out for engineering and design use with its high-performance AMD Ryzen CPU and Nvidia RTX GPU, making it suitable for demanding tasks, but it's heavier and less portable. The Lenovo IdeaPad Slim 7i Pro has a good screen with higher resolution and is lightweight, enhancing its portability, but it has a less powerful Intel i5 CPU and integrated graphics, which may not handle intensive tasks as well.
Screen Quality
8.2
7.7
15.6in
SIZE
14.0in
2560 x 1440
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
240Hz
REFRESH RATE
90Hz
300.0 nits
BRIGHTNESS
395.0 nits
The Dell Alienware m15 R7 has a better screen than the Lenovo IdeaPad Slim 7i Pro for gaming and AI.
Both the Dell Alienware m15 R7 and the Lenovo IdeaPad Slim 7i Pro have screens with high resolution and brightness which makes them suitable for general use, offering sharp visuals and easy visibility in various lighting conditions. Their wide color gamuts ensure accurate color reproduction essential for engineering and design tasks, where detail and color precision are crucial. However, their lower refresh rates compared to gaming-specific laptops make them less ideal for gaming and 3D applications, which benefit from higher refresh rates for smoother motion and better responsiveness.
Battery
5.0 Hours
8.5 Hours
The Dell Alienware m15 R7 has 5 hours of battery life. The Lenovo IdeaPad Slim 7i Pro has 8.5 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
Fair
Very Good
15.6in
SIZE
14.0in
5.9 lbs
WEIGHT
3.0 lbs
0.9in
THICKNESS
0.6in
The Lenovo IdeaPad Slim 7i Pro has very good portability, while the Dell Alienware m15 R7 has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
8.5
7.8
The Dell Alienware m15 R7 has very good build quality, while the Lenovo IdeaPad Slim 7i Pro has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,200
$799
$0
$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 IdeaPad Slim 7i Pro costs $799.
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Key similarities
General Use
7.5
7.3
2560 x 1440
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
300.0 nits
DISPLAY BRIGHTNESS
395.0 nits
5.0 Hours
BATTERY LIFE
8.5 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
6.4/10
PORTABILITY SCORE
8.7/10
The Dell Alienware m15 R7 and Lenovo IdeaPad Slim 7i Pro are both good for general use.
The Dell Alienware m15 R7 is good for general use as it has a high-performance CPU and ample RAM, guaranteeing smooth multitasking and responsiveness for everyday tasks, although its bulk and shorter battery life may limit portability. Conversely, the Lenovo IdeaPad Slim 7i Pro also offers solid CPU performance and plenty of RAM for general use, alongside superior portability due to its lighter design and longer battery life, but may trade-off some screen quality and peak performance compared to the Alienware.
Content Creation
7.5
7.4
8.5/10
OVERALL CPU SCORE
5.0/10
2560 x 1440
RESOLUTION
2880 x 1800
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Dell Alienware m15 R7 and Lenovo IdeaPad Slim 7i Pro 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
7.3
8.5/10
OVERALL CPU SCORE
5.0/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
2880 x 1800
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo IdeaPad Slim 7i Pro 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.
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How the Dell Alienware m15 R7 and the Lenovo IdeaPad Slim 7i Pro compare to other laptops
Spec Comparison
 |  | |
| Dell Alienware m15 R7 | Lenovo IdeaPad Slim 7i Pro |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,200 | $799 | ||
Release Date | |||
Release Date | May 1, 2022 | October 1, 2021 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 10.7'' x 0.94'' | 12.3'' x 8.7'' x 0.62'' | |
Weight | |||
Weight | 5.93 lbs | 3.04 lbs | |
Width | |||
Width | 14.02" | 12.29" | |
Depth | |||
Depth | 10.73" | 8.74" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 6900HX | Intel i5-11300H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 4 | |
RAM Slots | |||
RAM Slots | 2 | 0 | |
Storage | |||
Storage | 512 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 5 Hours | 8.5 Hours | |
Battery Capacity | |||
Battery Capacity | 86 Wh | 60.7 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 14" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1440 | 2880 x 1800 | |
Refresh Rate | |||
Refresh Rate | 240Hz | 90Hz | |
Display Brightness | |||
Display Brightness | 300 nits | 395 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 7.8/10 | |
Portability Score | |||
Portability Score | 6.5/10 | 8.8/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7.5/10 | 7.5/10 | |
Webcam | |||
Webcam | 720p | 720p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 3 | 1 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 2 | 2 | |
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."
Lenovo IdeaPad Slim 7i Pro
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NotebookCheck
Allen Ngo | October 2021
"The main selling point of the IdeaPad Slim 7i Pro versus a regular IdeaPad Slim 7 is its faster Core H-series CPU. In reality, the Core i7-11370H is only marginally faster than the U-series Core i7-1165G7 to the point where most users are not likely to notice the benefits. The slight performance uptick comes at the cost of slightly higher power consumption as well meaning owners will have to deal with potentially warmer temperatures or louder fans to compensate. Unless if you happen to be a power user, then the regular non-Pro model will be more than enough. Once you go 90 Hz, you can't go back."
Get a great deal on the Dell Alienware m15 R7 or the Lenovo IdeaPad Slim 7i Pro
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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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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