A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec laptop team Learn more
Updated January 12, 2024·
When choosing between the Dell Inspiron 15 3511 and the Lenovo ThinkPad Z13, consider that the Dell may save you money, but the ThinkPad Z13 often offers superior build quality and business-oriented features, which might be critical for professional use. The ThinkPad Z13 is also likely to deliver better performance, especially for demanding tasks. However, it may be heavier and have a shorter battery life compared to the Inspiron, which can affect portability if you're on the go often. Think about whether you prioritize saving money or if the added performance and features of the ThinkPad are worth the extra cost for your specific needs. 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 Inspiron 15 3511
- The Dell Inspiron 15 3511 has no clear advantages over the Lenovo ThinkPad Z13.
Advantages of the Lenovo ThinkPad Z13
- Good overall display quality
- Very good overall build quality
- Excellent portability
- Very good battery life
- Very good speakers
- Excellent keyboard
Key differences
Screen Quality
6.0
7.0
15.6in
SIZE
13.3in
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
60Hz
230.0 nits
BRIGHTNESS
379.0 nits
The Lenovo ThinkPad Z13 has a better screen than the Dell Inspiron 15 3511 for general use, gaming and AI, engineering and design, content creation, and software development.
For general use, the Lenovo ThinkPad Z13's superior panel type, resolution, and brightness make the screen crisper and easier to view under various lighting conditions compared to the Dell Inspiron 15 3511. When it comes to engineering and design, the ThinkPad Z13 stands out with its higher color accuracy and wider color gamuts, allowing for more precise work with color-critical applications. However, in the realm of gaming and 3D applications, both laptops fall short due to their lower refresh rates, which can hinder the smoothness and responsiveness in fast-paced visuals despite the Z13 having a slight edge in resolution and panel quality.
Battery
6.5 Hours
10.0 Hours
The Dell Inspiron 15 3511 has 6.5 hours of battery life. The Lenovo ThinkPad Z13 has 10 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
Good
Excellent
15.6in
SIZE
13.3in
3.7 lbs
WEIGHT
2.7 lbs
0.7in
THICKNESS
0.5in
The Lenovo ThinkPad Z13 has excellent portability, while the Dell Inspiron 15 3511 has good portability.
The most portable laptops are small, thin, and light.
Build Quality
6.2
8.5
The Lenovo ThinkPad Z13 has very good build quality, while the Dell Inspiron 15 3511 has only fair build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$560
$1,000
$200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
The Dell Inspiron 15 3511 has a price of $560 and the Lenovo ThinkPad Z13 costs $1,000.
Let Us Help Find Your Perfect Laptop
Find your new laptop
Key similarities
General Use
7.6
7.8
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
230.0 nits
DISPLAY BRIGHTNESS
379.0 nits
6.5 Hours
BATTERY LIFE
10.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
9.0/10
7.7/10
PORTABILITY SCORE
9.2/10
The Lenovo ThinkPad Z13 and Dell Inspiron 15 3511 are both good for general use.
The Dell Inspiron 15 3511 is recognized for general use due to its ample storage and RAM that facilitate smooth multitasking, while its larger screen offers comfortable viewing despite being slightly less portable due to size and battery life. Conversely, the Lenovo ThinkPad Z13 boasts a better processor for efficient performance, a high-quality screen with touch capability, and a compact design that enhances portability and battery lifespan, making it a robust choice for mobile users who need power and long usage intervals.
Gaming and AI
6.2
6.3
3.6/10
OVERALL GPU SCORE
3.9/10
1920 x 1080
RESOLUTION
1920 x 1200
60Hz
REFRESH RATE
60Hz
No
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.5/10
FAN NOISE SCORE
9.1/10
The Lenovo ThinkPad Z13 and Dell Inspiron 15 3511 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.
Engineering and Design
7.0
7.3
4.9/10
OVERALL CPU SCORE
6.8/10
3.6/10
OVERALL GPU SCORE
3.9/10
32.0 GB
RAM
16.0 GB
The Lenovo ThinkPad Z13 and Dell Inspiron 15 3511 are both good for engineering and design.
The Dell Inspiron 15 3511 is equipped with more RAM and a larger screen, making it suitable for complex engineering designs and multitasking, but it may sacrifice portability due to its larger size and weight compared to the Lenovo ThinkPad Z13, which offers a higher resolution and better screen aspect ratio for sharp and detailed graphics while being more portable and having longer battery life, making it ideal for engineering professionals on the go.
Content Creation
7.5
7.8
4.9/10
OVERALL CPU SCORE
6.8/10
1920 x 1080
RESOLUTION
1920 x 1200
32.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo ThinkPad Z13 and Dell Inspiron 15 3511 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
7.7
4.9/10
OVERALL CPU SCORE
6.8/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
1920 x 1200
6.5/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo ThinkPad Z13 and Dell Inspiron 15 3511 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.
Give feedback
We’re constantly working to improve.
How the Dell Inspiron 15 3511 and the Lenovo ThinkPad Z13 compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3511 | Lenovo ThinkPad Z13 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$560 | $1,000 | ||
Release Date | |||
Release Date | January 1, 2021 | May 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.74'' | 11.6'' x 7.9'' x 0.55'' | |
Weight | |||
Weight | 3.7 lbs | 2.78 lbs | |
Width | |||
Width | 14.11" | 11.59" | |
Depth | |||
Depth | 9.27" | 7.86" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i5-1135G7 | AMD Ryzen 7 6850U | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 0 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6.5 Hours | 10 Hours | |
Battery Capacity | |||
Battery Capacity | 41 Wh | 51.5 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 13.3" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 1920 x 1200 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 60Hz | |
Display Brightness | |||
Display Brightness | 230 nits | 379 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 6.3/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 7.8/10 | 9.3/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | Yes | |
Fan Noise Score | |||
Fan Noise Score | 7.5/10 | 9.1/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.5/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 8.8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | No | Yes | |
Number Pad | |||
Number Pad | Yes | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 3 | 0 | |
USB-C ports | |||
USB-C ports | 0 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 2 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
Shopping
Dell Inspiron 15 3511
See more
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 ThinkPad Z13
See more
Dig into reviews and images
PCMag
Brian Westover | September 2022
"In the premium ultraportable space, the Lenovo ThinkPad Z13 competes with the best of the best, and still manages to shine. The design is an impressive departure from the bland bare-metal laptop that's become so popular in recent years, and the AMD-powered system has performance that's just as impressive. It's a stark alternative to the Intel-based majority, and it stands up well enough to the impressive Apple M2 processor."
Get a great deal on the Dell Inspiron 15 3511 or the Lenovo ThinkPad Z13
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.
Give feedback
We're constantly perfecting our model
Laptop guides you might be interested in
More comparisons for you
Compare Dell Inspiron 15 3511 vs. Acer Aspire 5 15
VS
Compare Dell Inspiron 15 3511 vs. HP Envy x360 15"
VS
Compare Dell Inspiron 15 3511 vs. ASUS Vivobook 16X
VS
Compare Lenovo ThinkPad Z13 vs. LG Ultra 16
VS
Compare Lenovo ThinkPad Z13 vs. ASUS Vivobook 16X
VS
Compare Lenovo ThinkPad Z13 vs. ASUS TUF Gaming F17
VS
FAQs
FAQs about laptops
Why trust us
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.
Featured in
