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Inspiron 15 3511
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Slim Pro 7 14
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Advantages of the Dell Inspiron 15 3511
  • The Dell Inspiron 15 3511 has no clear advantages over the Lenovo Slim Pro 7 14.
Advantages of the Lenovo Slim Pro 7 14
  • Very good for general use
  • Very good for content creation
  • Good overall display quality
  • Good overall build quality
  • Very good portability
  • Very good battery life
  • Very good speakers
  • Good keyboard

Key differences

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Gaming and AI

6.2
Inspiron 15 3511
Slim Pro 7 14
6.7
3.6/10
OVERALL GPU SCORE
4.8/10
1920 x 1080
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
90Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.5/10
FAN NOISE SCORE
8.0/10
The Lenovo Slim Pro 7 14 and Dell Inspiron 15 3511 are both only fair for gaming and AI, though the Lenovo Slim Pro 7 14 is somewhat better.

Engineering and Design

7.0
Inspiron 15 3511
Slim Pro 7 14
7.7
4.9/10
OVERALL CPU SCORE
7.9/10
3.6/10
OVERALL GPU SCORE
4.8/10
32.0 GB
RAM
16.0 GB
The Lenovo Slim Pro 7 14 and Dell Inspiron 15 3511 are both good for engineering and design, though the Lenovo Slim Pro 7 14 is somewhat better.

Screen Quality

6.0
Inspiron 15 3511
Slim Pro 7 14
7.4
15.6in
SIZE
14.5in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
90Hz
230.0 nits
BRIGHTNESS
334.0 nits
The Lenovo Slim Pro 7 14 has a better screen than the Dell Inspiron 15 3511 for general use, gaming and AI, engineering and design, content creation, and software development.

Battery

6.5 Hours
Inspiron 15 3511
Slim Pro 7 14
12.0 Hours
The Dell Inspiron 15 3511 has 6.5 hours of battery life. The Lenovo Slim Pro 7 14 has 12 hours of battery life.

Portability

Good
Inspiron 15 3511
Slim Pro 7 14
Very Good
15.6in
SIZE
14.5in
3.7 lbs
WEIGHT
3.5 lbs
0.7in
THICKNESS
0.6in
The Lenovo Slim Pro 7 14 has very good portability, while the Dell Inspiron 15 3511 has good portability.
The most portable laptops are small, thin, and light.

Build Quality

6.2
Inspiron 15 3511
Slim Pro 7 14
7.8
The Lenovo Slim Pro 7 14 has good build quality, while the Dell Inspiron 15 3511 has only fair build quality.

Cost

$560
Inspiron 15 3511
Slim Pro 7 14
$1,200
Product image
Product image

$0

$500

$1,000

$1,500

$2,000

The Dell Inspiron 15 3511 has a price of $560 and the Lenovo Slim Pro 7 14 costs $1,200.
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Key similarities

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General Use

7.6
Inspiron 15 3511
Slim Pro 7 14
8.0
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
230.0 nits
DISPLAY BRIGHTNESS
334.0 nits
6.5 Hours
BATTERY LIFE
12.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
7.0/10
7.7/10
PORTABILITY SCORE
8.4/10
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 7 14 to be very good for general use, while the Dell Inspiron 15 3511 is good.

Content Creation

7.5
Inspiron 15 3511
Slim Pro 7 14
8.0
4.9/10
OVERALL CPU SCORE
7.9/10
1920 x 1080
RESOLUTION
2560 x 1600
32.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 7 14 to be very good for content creation, while the Dell Inspiron 15 3511 is good.

Software Development

7.3
Inspiron 15 3511
Slim Pro 7 14
7.8
4.9/10
OVERALL CPU SCORE
7.9/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
6.5/10
KEYBOARD QUALITY SCORE
7.0/10
The Lenovo Slim Pro 7 14 and Dell Inspiron 15 3511 are both good for software development.

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How the Dell Inspiron 15 3511 and the Lenovo Slim Pro 7 14 compare to other laptops

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Spec Comparison

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Dell Inspiron 15 3511Lenovo Slim Pro 7 14
Dell Inspiron 15 3511Lenovo Slim Pro 7 14

GENERAL

Price
$560
$1,200
Release Date
January 1, 2021February 1, 2023
Overall Dimensions
14.1'' x 9.3'' x 0.74''12.9'' x 8.9'' x 0.61''
Weight
3.7 lbs3.5 lbs
Width
14.11"12.91"
Depth
9.27"8.92"

INTERNAL

Processor
Intel i5-1135G7AMD Ryzen 7 7735HS
RAM
32 GB16 GB
DDR Memory Version
45
RAM Slots
20
Storage
1024 GB1024 GB

BATTERY

Battery Life
6.5 Hours12 Hours
Battery Capacity
41 Wh73 Wh

SCREEN

Diagonal Size
15.6"14.5"
Display Technology
IPSIPS
Resolution
1920 x 10802560 x 1600
Refresh Rate
60Hz90Hz
Display Brightness
230 nits334 nits

RELIABILITY, APPEARANCE & ACOUSTICS

Build Quality Score
6.3/107.8/10
Portability Score
7.8/108.4/10
Gaming Laptop Appearance
NoNo
Premium Business Laptop
NoNo
Fan Noise Score
7.5/108/10

HARDWARE FEATURES

Keyboard Quality Score
6.5/107/10
Speaker Quality Score
6.5/108/10
Webcam
720p1080p
Fingerprint Reader
NoNo
Backlit Keyboard
NoYes
Number Pad
YesNo

CONNECTIVITY

USB Type-A
31
USB-C ports
02
USB-C Charging
NoYes
Display Outputs
13
Thunderbolt Ports
00

Shopping

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Dell Inspiron 15 3511

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Dig into reviews and images

PCMag

Zachary Cuevas | November 2021
"The Dell Inspiron 15 3000 (3511) is a solid, if unremarkable, 15-inch budget laptop. It improves on many of the issues we had with the previous 3505 model, and with the inclusion of Windows 11, the 3511 is already a step above its competition. The lack of a USB-C port, the subpar speakers, and the dim display are drawbacks to factor in, but it's still one of the better 15-inch budget laptops on the market, especially when you consider it's under $400."

Lenovo Slim Pro 7 14

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Dig into reviews and images

PCWorld

Matthew S. Smith | May 2023
"The Lenovo Slim Pro 7 is an attractive, portable laptop that’s ideal if you need a combination of CPU and GPU performance. It also nails the fundamentals with solid connectivity, an enjoyable keyboard, a large touchpad, and top-notch webcam. Display quality is a weakness, but it’s an acceptable compromise for the laptop’s extremely competitive $1,199 MSRP. The Slim Pro 7 is a versatile, affordable laptop and hard to beat for the price."

Get a great deal on the Dell Inspiron 15 3511 or the Lenovo Slim Pro 7 14

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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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

380
Laptops evaluated
48,640
Laptops stats compiled
13
Proprietary Laptops ratings developed
126,795
Recommendations made
27,473
Consumer hours saved

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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