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What we think
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Updated January 12, 2024·
If you prioritize affordability and mainly engage in general use like browsing and light productivity tasks, the Dell Inspiron 15 3511 is a suitable choice and will save you money. On the other hand, if you're looking for higher performance for gaming, 3D rendering, or engineering software, the Lenovo Legion Slim 7 16" offers a more robust processor and graphics card, though it comes at a higher cost. The Lenovo also has a better screen with a higher resolution and refresh rate, which can be beneficial for creative work or an enhanced viewing experience. However, the Dell will be lighter and may offer longer battery life, making it more portable. Consider what your primary use will be and if the extra power and improved display of the Lenovo justify the additional expense for your 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 Legion Slim 7 16".
Advantages of the Lenovo Legion Slim 7 16"
- Very good for general use
- Very good for engineering and design
- Very good for gaming and AI
- Very good for software development
- Very good for content creation
- Very good overall display quality
- Good overall build quality
- Very good speakers
- Very good keyboard
Key differences
General Use
7.6
8.2
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
230.0 nits
DISPLAY BRIGHTNESS
502.0 nits
6.5 Hours
BATTERY LIFE
7.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
7.7/10
PORTABILITY SCORE
7.5/10
The Lenovo Legion Slim 7 16" is very good for general use, while the Dell Inspiron 15 3511 is good.
The Lenovo Legion Slim 7 16" offers better overall performance due to its superior AMD processor and Nvidia graphics, more RAM and a higher resolution screen with greater color accuracy and brightness, which enhances general use experiences, especially for tasks that demand visual clarity and graphical capabilities. While the Dell Inspiron 15 3511 is lighter and offers a practical choice for everyday tasks with its adequate Intel CPU and integrated graphics, its lower screen brightness and lesser color coverage make it less suitable for visually intensive tasks despite its slightly higher portability.
Gaming and AI
6.2
8.2
3.6/10
OVERALL GPU SCORE
8.3/10
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
7.5/10
The Lenovo Legion Slim 7 16" is very good for gaming and AI, while the Dell Inspiron 15 3511 is only fair.
The Lenovo Legion Slim 7 has a more powerful Nvidia RTX 4060 GPU and a higher screen refresh rate of 240 Hz, making it very good for gaming and 3D applications, whereas the Dell Inspiron 15 3511, with an Intel Iris Xe integrated GPU and a 60 Hz screen refresh rate, offers fair performance for these tasks.
Engineering and Design
7.0
8.6
4.9/10
OVERALL CPU SCORE
9.1/10
3.6/10
OVERALL GPU SCORE
8.3/10
32.0 GB
RAM
16.0 GB
The Lenovo Legion Slim 7 16" is very good for engineering and design, while the Dell Inspiron 15 3511 is good.
The Lenovo Legion Slim 7 16" is considered very good for engineering and design use because of its powerful AMD Ryzen processor, superior Nvidia RTX GPU for demanding graphics work, and a higher-resolution display offering superior screen quality. Conversely, the Dell Inspiron 15 3511, while also suitable for engineering and design tasks with a capable Intel processor and adequate integrated GPU, ranks lower mainly due to its standard resolution display and less robust GPU, yet offers more RAM which could be beneficial for certain applications. Both laptops are fairly portable with good but not exceptional battery life; however, the Legion's keyboard and speakers are rated higher in quality, and it operates quieter than the Inspiron.
Content Creation
7.5
8.3
4.9/10
OVERALL CPU SCORE
9.1/10
1920 x 1080
RESOLUTION
2560 x 1600
32.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Slim 7 16" 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
8.0
4.9/10
OVERALL CPU SCORE
9.1/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Slim 7 16" 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
502.0 nits
The Lenovo Legion Slim 7 has a better screen than the Dell Inspiron 15 3511 for general use, gaming and AI, engineering and design, content creation, and software development.
The Dell Inspiron 15 3511's screen, being fair for general use and engineering, suggests it has adequate resolution and brightness, but limited color coverage making it less suitable for professional design tasks that demand precise colors. The Lenovo Legion Slim 7, with its very good screen quality for the same applications, likely offers higher resolution, brightness, and wider color gamuts, enhancing visual clarity and color fidelity which are critical for detailed engineering and design work. However, both laptops have screens that are not ideal for gaming and 3D purposes due to lower refresh rates, which are less capable of delivering the fluid visuals desired in these scenarios.
Build Quality
6.2
7.6
The Lenovo Legion Slim 7 16" 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
$1,344
$0
$500
$1,000
$1,500
$2,000
The Dell Inspiron 15 3511 has a price of $560 and the Lenovo Legion Slim 7 16" costs $1,344.
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Key similarities
Battery
6.5 Hours
7.0 Hours
The Dell Inspiron 15 3511 has 6.5 hours of battery life. The Lenovo Legion Slim 7 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.
Portability
Good
Good
15.6in
SIZE
16.0in
3.7 lbs
WEIGHT
4.4 lbs
0.7in
THICKNESS
0.6in
The Dell Inspiron 15 3511 and Lenovo Legion Slim 7 16" both have good portability.
The most portable laptops are small, thin, and light.
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How the Dell Inspiron 15 3511 and the Lenovo Legion Slim 7 16" compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 15 3511 | Lenovo Legion Slim 7 16" |
GENERAL | |||
|---|---|---|---|
| Price | |||
$560 | $1,344 | ||
Release Date | |||
Release Date | January 1, 2021 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 9.3'' x 0.74'' | 14.1'' x 10.2'' x 0.69'' | |
Weight | |||
Weight | 3.7 lbs | 4.4 lbs | |
Width | |||
Width | 14.11" | 14.08" | |
Depth | |||
Depth | 9.27" | 10.21" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i5-1135G7 | AMD Ryzen 7 7840HS | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 1 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6.5 Hours | 7 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 | 502 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 6.3/10 | 7.6/10 | |
Portability Score | |||
Portability Score | 7.8/10 | 7.5/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.5/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.5/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.5/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | No | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 3 | 3 | |
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 7 16"
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Dig into reviews and images
NotebookCheck
Benjamin Herzig | November 2022
"The Lenovo Legion Slim 7 is a slim Legion notebook that is just as excellent with Nvidia & Intel. However, the Legion Slim 7i slightly sullied by lacklustre battery life. You get a slim aluminium chassis, great input devices, decent port selection, fast high-quality WQXGA display and great performance. Supporting Thunderbolt 4 is one advantage of the Intel/Nvidia model tested in this review. Moreover, this variant has slightly higher CPU performance as well as better GPU performance in certain applications (e.g. CUDA-based apps). The Lenovo Legion S7i is thin, premium and performant – but less efficient than its AMD counterpart."
Get a great deal on the Dell Inspiron 15 3511 or the Lenovo Legion Slim 7 16"
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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