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 Inspiron 15 3525
- The Dell Inspiron 15 3525 has no clear advantages over the Lenovo IdeaPad Slim 5i.
Advantages of the Lenovo IdeaPad Slim 5i
- Good for engineering and design
- Good for software development
- Good overall build quality
- Very good keyboard
Key differences
Engineering and Design
6.5
7.0
5.8/10
OVERALL CPU SCORE
6.9/10
3.6/10
OVERALL GPU SCORE
3.7/10
8.0 GB
RAM
16.0 GB
The Lenovo IdeaPad Slim 5i is good for engineering and design, while the Dell Inspiron 15 3525 is only fair.
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.
Software Development
6.9
7.4
5.8/10
OVERALL CPU SCORE
6.9/10
8.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
1920 x 1200
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
The Lenovo IdeaPad Slim 5i is good for software development, while the Dell Inspiron 15 3525 is only fair.
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
6.8
6.4
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
120Hz
REFRESH RATE
60Hz
259.0 nits
BRIGHTNESS
315.0 nits
The Dell Inspiron 15 3525 has a better screen than the Lenovo IdeaPad Slim 5i for general use, gaming and AI, and engineering and design, while the Lenovo IdeaPad Slim 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
6.5 Hours
8.0 Hours
The Dell Inspiron 15 3525 has 6.5 hours of battery life. The Lenovo IdeaPad Slim 5i has 8 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
6.2
7.6
The Lenovo IdeaPad Slim 5i has good build quality, while the Dell Inspiron 15 3525 has only fair build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
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Key similarities
General Use
7.1
7.5
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
259.0 nits
DISPLAY BRIGHTNESS
315.0 nits
6.5 Hours
BATTERY LIFE
8.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.0/10
7.7/10
PORTABILITY SCORE
7.6/10
The Lenovo IdeaPad Slim 5i and Dell Inspiron 15 3525 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.
Gaming and AI
6.1
6.3
3.6/10
OVERALL GPU SCORE
3.7/10
1920 x 1080
RESOLUTION
1920 x 1200
120Hz
REFRESH RATE
60Hz
No
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.5/10
FAN NOISE SCORE
7.5/10
The Lenovo IdeaPad Slim 5i and Dell Inspiron 15 3525 are both only fair for gaming and AI.
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.
Content Creation
7.1
7.4
5.8/10
OVERALL CPU SCORE
6.9/10
1920 x 1080
RESOLUTION
1920 x 1200
8.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo IdeaPad Slim 5i and Dell Inspiron 15 3525 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.
Portability
Good
Good
15.6in
SIZE
16.0in
3.7 lbs
WEIGHT
4.1 lbs
0.7in
THICKNESS
0.7in
The Dell Inspiron 15 3525 and Lenovo IdeaPad Slim 5i both have good portability.
The most portable laptops are small, thin, and light.
Cost
$449
$449
$200
$300
$400
$500
$600
$700
The Dell Inspiron 15 3525 has a price of $449 and the Lenovo IdeaPad Slim 5i costs $449.
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How the Dell Inspiron 15 3525 and the Lenovo IdeaPad Slim 5i compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3525 | Lenovo IdeaPad Slim 5i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$449 | $449 | ||
Release Date | |||
Release Date | March 1, 2022 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.75'' | 14'' x 9.9'' x 0.7'' | |
Weight | |||
Weight | 3.71 lbs | 4.17 lbs | |
Width | |||
Width | 14.11" | 14.02" | |
Depth | |||
Depth | 9.27" | 9.88" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 5 5625U | Intel i5-1335U | |
Graphics | |||
Graphics | Vega 7 | Iris Xe | |
Mux Switch / Advanced Optimus | |||
Mux Switch / Advanced Optimus | No | No | |
RAM | |||
RAM | 8 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6.5 Hours | 8 Hours | |
Battery Capacity | |||
Battery Capacity | 41 Wh | 56.6 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 1920 x 1200 | |
Refresh Rate | |||
Refresh Rate | 120Hz | 60Hz | |
Display Brightness | |||
Display Brightness | 259 nits | 315 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 6.3/10 | 7.6/10 | |
Portability Score | |||
Portability Score | 7.8/10 | 7.6/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | No | |
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 | 6.5/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 6.5/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | No | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 2 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 3 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
Shopping
Dell Inspiron 15 3525
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Dig into reviews and images
PCMag
Mark Knapp | January 2023
"Dell's Inspiron 15 (3525) is a peppy-enough and affordable-enough home or remote work machine, but it's not very ambitious; it does little to go beyond the basics. More the concern: It’s readily overshadowed by a number of machines that outperform and outclass it. Even if the Inspiron can get the job done today, its competition has the mettle to keep doing the job tomorrow in a way the Inspiron simply can’t promise. Many of its slightly higher-end rivals have to be on sale (and frequently are) to match it on price, but the Inspiron 15 (3525) is outclassed even by some similarly priced options, making it a difficult recommendation."
Lenovo IdeaPad Slim 5i
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Dig into reviews and images
HT Tech
Robin Sinha | February 2021
"The device is made for average work loads and if your work has a lot to do with online browsing, using apps that are not power-hungry and streaming videos. The looks are really good and the device in itself is not a heavy one. And with Intel 11th-gen Core processor, you might sail through most of your work without complaints."
Get a great deal on the Dell Inspiron 15 3525 or the Lenovo IdeaPad Slim 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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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
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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