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Updated January 12, 2024·
If you're on a tight budget and mainly handling everyday tasks like web browsing, office work, and media consumption, the Dell Inspiron 15 3511 offers sufficient performance at a lower cost. However, if you require a high-performance machine for gaming, graphic design, 3D modeling, or intensive engineering applications, the Lenovo Legion 7i Pro, despite being pricier, delivers superior graphics, faster processing power, and enhanced features for those purposes. The tradeoff is that the Lenovo is usually more expensive and less portable due to its gaming-oriented design, which can affect battery life and ease of transport. Consider your primary activities and whether the additional investment in the Lenovo aligns with your needs for advanced capabilities and performance. 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
- Very good for general use
- Excellent for engineering and design
- Excellent for gaming and AI
- Very good for software development
- Very good for content creation
- Very good overall display quality
- Very good overall build quality
- Best in class speakers
- Excellent keyboard
Key differences
General Use
7.6
8.4
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
The Lenovo Legion Pro 7i is very good for general use, while the Dell Inspiron 15 3511 is good.
The Dell Inspiron 15 3511 is tailored for general use with a balanced configuration that favors portability and affordability, offering decent screen quality, reasonable battery life, and satisfactory build quality, while providing good performance through ample RAM and a solid CPU.
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 is excellent for gaming and AI, while the Dell Inspiron 15 3511 is only fair.
The Dell Inspiron 15 3511 has an integrated GPU and a screen refresh rate of 60Hz, which are less favorable for gaming and 3D applications compared to the Lenovo Legion Pro 7i, which boasts a high-end Nvidia RTX 4080 GPU and a 240Hz screen refresh rate, offering superior performance and smoother visuals for demanding tasks.
Engineering and Design
7.0
9.3
4.9/10
OVERALL CPU SCORE
9.9/10
3.6/10
OVERALL GPU SCORE
9.8/10
32.0 GB
RAM
32.0 GB
The Lenovo Legion Pro 7i is excellent for engineering and design, while the Dell Inspiron 15 3511 is good.
The Lenovo Legion Pro 7i is excellent for engineering and design due to its top-tier CPU, the Intel i9-13900HX, along with an Nvidia RTX 4080 GPU and high-resolution screen, which significantly outperform the Dell Inspiron 15 3511's lower-tier Intel i5-1135G7 CPU, integrated graphics, and standard resolution display. Although the Dell is lighter and potentially more portable, the Lenovo offers better keyboard and speaker quality, but with the tradeoff of being heavier and possibly noisier under load.
Content Creation
7.5
8.5
4.9/10
OVERALL CPU SCORE
9.9/10
1920 x 1080
RESOLUTION
2560 x 1600
32.0 GB
RAM
32.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Pro 7i 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
8.2
4.9/10
OVERALL CPU SCORE
9.9/10
32.0 GB
RAM
32.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
6.5/10
KEYBOARD QUALITY SCORE
9.0/10
The Lenovo Legion Pro 7i is very good for software development, while the Dell Inspiron 15 3511 is good.
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.
When considering screen quality for general use, the Lenovo Legion Pro 7i excels with its higher resolution and brightness, making text sharper and content more vibrant compared to the Dell Inspiron 15 3511. For engineering and design, the Lenovo's superior color gamut coverage ensures more accurate color reproduction which is essential for professional editing and modeling work. However, for gaming and 3D applications, both laptops fall short as their refresh rates are not as high as dedicated gaming laptops, impacting the smoothness of fast-paced visuals.
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
6.1 lbs
0.7in
THICKNESS
0.9in
The Dell Inspiron 15 3511 has good portability, while the Lenovo Legion Pro 7i has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
6.2
8.5
The Lenovo Legion Pro 7i 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
$2,000
$0
$500
$1,000
$1,500
$2,000
$2,500
$3,000
The Dell Inspiron 15 3511 has a price of $560 and the Lenovo Legion Pro 7i costs $2,000.
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How the Dell Inspiron 15 3511 and the Lenovo Legion Pro 7i compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3511 | Lenovo Legion Pro 7i |
GENERAL | |||
|---|---|---|---|
| Price | |||
$560 | $2,000 | ||
Release Date | |||
Release Date | January 1, 2021 | March 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.74'' | 14.3'' x 10.3'' x 0.94'' | |
Weight | |||
Weight | 3.7 lbs | 6.17 lbs | |
Width | |||
Width | 14.11" | 14.3" | |
Depth | |||
Depth | 9.27" | 10.32" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i5-1135G7 | Intel i9-13900HX | |
RAM | |||
RAM | 32 GB | 32 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 | 6.5/10 | |
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
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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
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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