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Zenbook 14
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Inspiron 15 3520
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What we think

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Updated January 12, 2024·

The ASUS Zenbook 14 and Dell Inspiron 15 3520 are similarly priced, but they cater to different needs. The Zenbook 14 has an OLED display, which means it offers superior visual quality with vibrant colors and deeper blacks, and it's also lighter and more compact, making it easier to carry around. In contrast, the Inspiron 15 has a larger screen size and may have a longer battery life, advantageous for extended work sessions without access to power. If top-notch screen quality and portability are more important to you, go for the ASUS Zenbook 14, while the Dell Inspiron 15 is suitable if you prefer a larger display and potentially longer unplugged usage. 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 ASUS Zenbook 14
  • Good for general use
  • Good for engineering and design
  • Good for software development
  • Very good overall display quality
  • Good overall build quality
  • Very good portability
  • Good speakers
  • Very good keyboard
Advantages of the Dell Inspiron 15 3520
  • The Dell Inspiron 15 3520 has no clear advantages over the ASUS Zenbook 14.

Key differences

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Engineering and Design

7.2
Zenbook 14
Inspiron 15 3520
6.3
7.1/10
OVERALL CPU SCORE
5.8/10
3.7/10
OVERALL GPU SCORE
3.6/10
8.0 GB
RAM
8.0 GB
The ASUS Zenbook 14 is good for engineering and design, while the Dell Inspiron 15 3520 is only fair.

Screen Quality

8.3
Zenbook 14
Inspiron 15 3520
6.8
14.0in
SIZE
15.6in
2880 x 1800
RESOLUTION
1920 x 1080
OLED
DISPLAY TECHNOLOGY
IPS
90Hz
REFRESH RATE
120Hz
339.0 nits
BRIGHTNESS
259.0 nits
The ASUS Zenbook 14 has a better screen than the Dell Inspiron 15 3520 for general use, gaming and AI, engineering and design, software development, and content creation.

Battery

8.0 Hours
Zenbook 14
Inspiron 15 3520
6.5 Hours
The ASUS Zenbook 14 has 8 hours of battery life. The Dell Inspiron 15 3520 has 6.5 hours of battery life.

Portability

Very Good
Zenbook 14
Inspiron 15 3520
Good
14.0in
SIZE
15.6in
3.0 lbs
WEIGHT
3.6 lbs
0.6in
THICKNESS
0.8in
The ASUS Zenbook 14 has very good portability, while the Dell Inspiron 15 3520 has good portability.
The most portable laptops are small, thin, and light.

Build Quality

7.8
Zenbook 14
Inspiron 15 3520
6.2
The ASUS Zenbook 14 has good build quality, while the Dell Inspiron 15 3520 has only fair build quality.

Cost

$300
Zenbook 14
Inspiron 15 3520
$325
Product image
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The ASUS Zenbook 14 has a price of $300 and the Dell Inspiron 15 3520 costs $325.
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Key similarities

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General Use

7.2
Zenbook 14
Inspiron 15 3520
6.9
2880 x 1800
RESOLUTION
1920 x 1080
OLED
DISPLAY TECHNOLOGY
IPS
339.0 nits
DISPLAY BRIGHTNESS
259.0 nits
8.0 Hours
BATTERY LIFE
6.5 Hours
8.0/10
KEYBOARD QUALITY SCORE
6.5/10
8.6/10
PORTABILITY SCORE
7.6/10
Although they have very similar scores, PerfectRec considers ASUS Zenbook 14 to be good for general use, while the Dell Inspiron 15 3520 is only fair.

Gaming and AI

6.1
Zenbook 14
Inspiron 15 3520
6.0
3.7/10
OVERALL GPU SCORE
3.6/10
2880 x 1800
RESOLUTION
1920 x 1080
90Hz
REFRESH RATE
120Hz
No
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
6.5/10
FAN NOISE SCORE
7.5/10
The ASUS Zenbook 14 and Dell Inspiron 15 3520 are both only fair for gaming and AI.

Content Creation

7.3
Zenbook 14
Inspiron 15 3520
7.0
7.1/10
OVERALL CPU SCORE
5.8/10
2880 x 1800
RESOLUTION
1920 x 1080
8.0 GB
RAM
8.0 GB
OLED
DISPLAY TECHNOLOGY
IPS
The ASUS Zenbook 14 and Dell Inspiron 15 3520 are both good for content creation.

Software Development

7.2
Zenbook 14
Inspiron 15 3520
6.7
7.1/10
OVERALL CPU SCORE
5.8/10
8.0 GB
RAM
8.0 GB
2880 x 1800
RESOLUTION
1920 x 1080
8.0/10
KEYBOARD QUALITY SCORE
6.5/10
Although they have very similar scores, PerfectRec considers ASUS Zenbook 14 to be good for software development, while the Dell Inspiron 15 3520 is only fair.

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How the ASUS Zenbook 14 and the Dell Inspiron 15 3520 compare to other laptops

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Spec Comparison

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ASUS Zenbook 14Dell Inspiron 15 3520
ASUS Zenbook 14Dell Inspiron 15 3520

GENERAL

Price
$300
$325
Release Date
May 1, 2022May 1, 2022
Overall Dimensions
12.4'' x 8.7'' x 0.67''14.1'' x 9.3'' x 0.83''
Weight
3.06 lbs3.65 lbs
Width
12.35"14.11"
Depth
8.69"9.27"

INTERNAL

Processor
Intel i5-1240PIntel i3-1215U
RAM
8 GB8 GB
DDR Memory Version
54
RAM Slots
02
Storage
256 GB256 GB

BATTERY

Battery Life
8 Hours6.5 Hours
Battery Capacity
75 Wh41 Wh

SCREEN

Diagonal Size
14"15.6"
Display Technology
OLEDIPS
Resolution
2880 x 18001920 x 1080
Refresh Rate
90Hz120Hz
Display Brightness
339 nits259 nits

RELIABILITY, APPEARANCE & ACOUSTICS

Build Quality Score
7.8/106.3/10
Portability Score
8.6/107.7/10
Gaming Laptop Appearance
NoNo
Premium Business Laptop
NoNo
Fan Noise Score
6.5/107.5/10

HARDWARE FEATURES

Keyboard Quality Score
8/106.5/10
Speaker Quality Score
7.5/106.5/10
Webcam
720p720p
Fingerprint Reader
YesNo
Backlit Keyboard
YesNo
Number Pad
NoYes

CONNECTIVITY

USB Type-A
12
USB-C ports
21
USB-C Charging
YesNo
Display Outputs
31
Thunderbolt Version
4N/A

Shopping

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ASUS Zenbook 14

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Dig into reviews and images

NotebookCheck

Florian Glaser | August 2022
"Users who travel frequently and are looking for a portable laptop are in the right place with the Asus ZenBook 14. The sleek case is extremely light (1.2 kg) and surprisingly thin (1.5 cm). Outdoor use is also enjoyable thanks to the bright Full HD display, which is something that can rarely be said about laptops with TN or IPS panels. The excellent battery life complements this as well. Longer trips are no problem with the ZenBook 14. Another plus point is the high-performance Ryzen 7 5700U, which often leaves the Intel competition in the dust thanks to its large number of cores."

Dell Inspiron 15 3520

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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. Plus, those alternatives are much more enjoyable after work."

Get a great deal on the ASUS Zenbook 14 or the Dell Inspiron 15 3520

About ASUS

ASUS, a Taiwanese electronics brand, is one of the largest personal computer vendor by market share. The majority of their laptops are targeted towards personal use or gaming. Their most popular product lines include the budget-friendly VivoBook, more premium ZenBook, and their TUF and ROG gaming laptops, the latter of which has a reputation for excellent gaming performance.

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.

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Why trust us

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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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Laptops evaluated
48,640
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Recommendations made
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About the laptop team

Joe Golden, Ph.D

CEO and Laptops Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.

Jason Lew

Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.

Chandradeep Chowdhury

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.

Craig Russell

Laptops Expert
Craig is a UK-based laptops expert. Craig works in IT, where he recommends and supports laptops and PCs for clients and has been recommending laptops on Reddit for five years.

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