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What we think
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Updated June 22, 2024·
For general use and portability, the Dell Inspiron 15 3511 is a solid choice with its lower midrange price, lighter weight, and longer battery life, making it suitable for everyday tasks and on-the-go convenience. However, if high performance for gaming, 3D rendering, or machine learning is your priority, the Lenovo Legion Pro 7i (2024) stands out with its powerful i9 processor and RTX 4080 graphics card, albeit at a premium price and with a bulkier design that's less portable. The Legion Pro 7i also offers a higher resolution and refresh rate display, which is ideal for fast-motion content and engineering tasks that benefit from the increased pixel density and color accuracy. Consider the Dell for budget-friendly general use and the Lenovo for top-tier performance in intensive applications. 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
- Good portability
- Good battery life
Advantages of the Lenovo Legion Pro 7i (2024)
- Very good for general use
- Excellent for engineering and design
- Excellent for gaming and AI
- Very good for content creation
- Very good overall display quality
- Very good overall build quality
- Best in class speakers
- Excellent keyboard
Key differences
Gaming and AI
6.2
9.1
3.6/10
OVERALL GPU SCORE
9.8/10
1920 x 1080
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
240Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.5/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion Pro 7i (2024) is excellent for gaming and AI, while the Dell Inspiron 15 3511 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
7.0
9.0
4.9/10
OVERALL CPU SCORE
9.9/10
3.6/10
OVERALL GPU SCORE
9.8/10
32.0 GB
RAM
16.0 GB
The Lenovo Legion Pro 7i (2024) is excellent for engineering and design, while the Dell Inspiron 15 3511 is good.
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.
Content Creation
7.5
8.3
4.9/10
OVERALL CPU SCORE
9.9/10
1920 x 1080
RESOLUTION
2560 x 1600
32.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Pro 7i (2024) is very good for content creation, while the Dell Inspiron 15 3511 is good.
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
7.9
4.9/10
OVERALL CPU SCORE
9.9/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
6.5/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion Pro 7i (2024) and Dell Inspiron 15 3511 are both good for software development, though the Lenovo Legion Pro 7i (2024) is somewhat better.
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
6.0
8.7
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
240Hz
230.0 nits
BRIGHTNESS
469.0 nits
The Lenovo Legion Pro 7i has a better screen than the Dell Inspiron 15 3511 for general use, gaming and AI, engineering and design, 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
5.0 Hours
The Dell Inspiron 15 3511 has 6.5 hours of battery life. The Lenovo Legion Pro 7i has 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
Good
Fair
15.6in
SIZE
16.0in
3.7 lbs
WEIGHT
5.7 lbs
0.7in
THICKNESS
1.0in
The Dell Inspiron 15 3511 has good portability, while the Lenovo Legion Pro 7i (2024) has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
6.2
8.5
The Lenovo Legion Pro 7i (2024) 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
$2,100
$0
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The Dell Inspiron 15 3511 has a price of $560 and the Lenovo Legion Pro 7i (2024) costs $2,100.
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Key similarities
General Use
7.6
8.1
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
230.0 nits
DISPLAY BRIGHTNESS
469.0 nits
6.5 Hours
BATTERY LIFE
5.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
9.0/10
7.7/10
PORTABILITY SCORE
6.4/10
Although they have very similar scores, PerfectRec considers Lenovo Legion Pro 7i (2024) to be very good for general use, while the Dell Inspiron 15 3511 is good.
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.
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How the Dell Inspiron 15 3511 and the Lenovo Legion Pro 7i (2024) compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3511 | Lenovo Legion Pro 7i (2024) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$560 | $2,100 | ||
Release Date | |||
Release Date | January 1, 2021 | February 1, 2024 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.74'' | 14.3'' x 10.3'' x 1.02'' | |
Weight | |||
Weight | 3.7 lbs | 5.78 lbs | |
Width | |||
Width | 14.11" | 14.31" | |
Depth | |||
Depth | 9.27" | 10.32" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i5-1135G7 | Intel i9-14900HX | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6.5 Hours | 5 Hours | |
Battery Capacity | |||
Battery Capacity | 41 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 240Hz | |
Display Brightness | |||
Display Brightness | 230 nits | 469 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 6.3/10 | 8.5/10 | |
Portability Score | |||
Portability Score | 7.8/10 | 6.4/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.5/10 | 6.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.5/10 | 9/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 9.8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | No | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 3 | 4 | |
USB-C ports | |||
USB-C ports | 0 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
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 Legion Pro 7i (2024)
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Dig into reviews and images
NotebookCheck
Florian Glaser | February 2023
"Passionate gamers who want to play demanding modern titles with maximum details and don't mind spending the moolah will find the Lenovo Legion 7 Pro to be the right choice. The bright, sharp, and color-accurate 16:10 QHD 240 Hz display makes for an immersive viewing experience. The hardware is housed in a stylish chassis that feels premium and scores well in terms of workmanship and stability. Other aspects such as sound quality, input devices, and connectivity also seem to be near-perfect."
Get a great deal on the Dell Inspiron 15 3511 or the Lenovo Legion Pro 7i (2024)
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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