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Updated January 12, 2024·
If you prioritize a laptop that is more budget-friendly and offers reasonable performance for everyday tasks, the Dell Inspiron 15 3511 could be a good choice. On the other hand, if you need a laptop with higher performance for gaming, 3D work, or intensive engineering tasks, the Lenovo Legion Slim 5, while more expensive, will provide significantly better performance. Remember, though, that the higher performance of the Lenovo comes with less portability due to its heavier weight and typically consumes more battery, so it may not be as mobile or long-lasting per charge as the Dell. 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
Advantages of the Lenovo Legion Slim 5
- Very good for engineering and design
- Good for gaming and AI
- Good overall display quality
- Good overall build quality
- Good speakers
- Very good keyboard
Key differences
Gaming and AI
6.2
7.7
3.6/10
OVERALL GPU SCORE
8.4/10
1920 x 1080
RESOLUTION
1920 x 1200
60Hz
REFRESH RATE
144Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.5/10
FAN NOISE SCORE
6.5/10
The Lenovo Legion Slim 5 is good for gaming and AI, while the Dell Inspiron 15 3511 is only fair.
The Dell Inspiron 15 3511 has an integrated Intel Iris Xe graphics chip and a screen that refreshes at a maximum of 60 times per second, suitable for less demanding games, while the Lenovo Legion Slim 5 is equipped with a more powerful Nvidia RTX 4060 graphics card and a screen that refreshes 144 times per second, providing a smoother and more immersive gaming and 3D experience.
Engineering and Design
7.0
8.0
4.9/10
OVERALL CPU SCORE
8.3/10
3.6/10
OVERALL GPU SCORE
8.4/10
32.0 GB
RAM
16.0 GB
The Lenovo Legion Slim 5 is very good for engineering and design, while the Dell Inspiron 15 3511 is good.
The Lenovo Legion Slim 5 outperforms the Dell Inspiron 15 3511 in engineering and design use due to its more powerful AMD Ryzen CPU, superior Nvidia RTX GPU, and higher quality screen that offers better brightness and color coverage, which are very important for these tasks. While the Dell Inspiron is lighter and hence more portable, the Legion Slim 5 compensates with better keyboard quality and reduced operating noise, making it a more suitable choice for intensive engineering and design work.
Screen Quality
6.0
7.2
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
144Hz
230.0 nits
BRIGHTNESS
300.0 nits
The Lenovo Legion Slim 5 has a better screen than the Dell Inspiron 15 3511 for general use, gaming and AI, and engineering and design.
If you prioritize a vibrant display and work in fields like engineering or design, the Lenovo Legion Slim 5 offers superior color coverage, providing a wider range of colors for detailed tasks. However, while both the Dell Inspiron 15 3511 and Lenovo Legion Slim 5 give satisfactory visuals for everyday activities due to decent resolution and brightness, neither is ideal for gaming or 3D work because of their lack of high refresh rates, which are crucial for smooth motion and quick responsiveness. The Inspiron's fair screen quality across different use cases reflects compromises made for cost-effectiveness, while the Legion's better display aligns with its focus on providing a richer visual experience for creatives.
Portability
Good
Fair
15.6in
SIZE
16.0in
3.7 lbs
WEIGHT
5.2 lbs
0.7in
THICKNESS
0.9in
The Dell Inspiron 15 3511 has good portability, while the Lenovo Legion Slim 5 has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
6.2
7.4
The Lenovo Legion Slim 5 has 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 Legion Slim 5 costs $1,000.
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Key similarities
General Use
7.6
7.6
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
230.0 nits
DISPLAY BRIGHTNESS
300.0 nits
6.5 Hours
BATTERY LIFE
7.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
7.7/10
PORTABILITY SCORE
6.7/10
The Lenovo Legion Slim 5 and Dell Inspiron 15 3511 are both good for general use.
The Dell Inspiron 15 3511's balance of a capable CPU, ample RAM, and a quality IPS screen make it a solid choice for general use, enhanced by its decent battery life and portability. The Lenovo Legion Slim 5, also suitable for general activities, offers a high-performance CPU and GPU combination, better screen resolution and refresh rate, but it's slightly less portable due to its larger screen and heavier weight.
Content Creation
7.5
7.5
4.9/10
OVERALL CPU SCORE
8.3/10
1920 x 1080
RESOLUTION
1920 x 1200
32.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Dell Inspiron 15 3511 and Lenovo Legion Slim 5 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
7.4
4.9/10
OVERALL CPU SCORE
8.3/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
1920 x 1200
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Slim 5 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.
Battery
6.5 Hours
7.0 Hours
The Dell Inspiron 15 3511 has 6.5 hours of battery life. The Lenovo Legion Slim 5 has 7 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.
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How the Dell Inspiron 15 3511 and the Lenovo Legion Slim 5 compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3511 | Lenovo Legion Slim 5 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$560 | $1,000 | ||
Release Date | |||
Release Date | January 1, 2021 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.74'' | 14.2'' x 10.3'' x 0.99'' | |
Weight | |||
Weight | 3.7 lbs | 5.29 lbs | |
Width | |||
Width | 14.11" | 14.16" | |
Depth | |||
Depth | 9.27" | 10.25" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i5-1135G7 | AMD Ryzen 5 7640HS | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 2 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6.5 Hours | 7 Hours | |
Battery Capacity | |||
Battery Capacity | 41 Wh | 80 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 1920 x 1200 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 144Hz | |
Display Brightness | |||
Display Brightness | 230 nits | 300 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 6.3/10 | 7.4/10 | |
Portability Score | |||
Portability Score | 7.8/10 | 6.7/10 | |
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 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 7/10 | |
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 | 2 | |
USB-C ports | |||
USB-C ports | 0 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 1 | 3 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
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 Slim 5
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Dig into reviews and images
PCMag
Mark Knapp | August 2023
"The Lenovo Legion Slim 5 Gen 8 acknowledges that a gaming laptop doesn’t have to be as thick as possible and can still ensure adequate cooling when the muscles need flexing. To this end, in the Slim 5 Gen 8, it finds a neat balance of refined, trimmed-down design that still lets its internals cruise (even above their max power ratings). Lenovo then added in some high-end build quality with an altogether excellent keyboard that’s useful for both work and play."
Get a great deal on the Dell Inspiron 15 3511 or the Lenovo Legion Slim 5
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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