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What we think
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Updated January 10, 2024·
If you prioritize gaming or any 3D or machine learning tasks and don't mind a slightly heavier and less portable laptop, the Lenovo Legion Slim 7 might be the better choice due to a more powerful graphics unit and better performance in intensive tasks. If portability and a touchscreen are more important to you, and you're mainly focused on general use like browsing and productivity applications, the Dell Inspiron 14 7420 offers a lighter design and may also save you some money. Both laptops have similar storage and memory, but you'll enjoy longer battery life with the Lenovo. 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 14 7420
- Very good portability
Advantages of the Lenovo Legion Slim 7 15.6"
- Good for engineering and design
- Good for gaming and AI
- Good overall display quality
- Very good speakers
Key differences
Gaming and AI
6.2
7.4
3.7/10
OVERALL GPU SCORE
7.1/10
1920 x 1200
RESOLUTION
1920 x 1080
60Hz
REFRESH RATE
165Hz
No
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.5/10
FAN NOISE SCORE
7.5/10
The Lenovo Legion Slim 7 15.6" is good for gaming and AI, while the Dell Inspiron 14 7420 is only fair.
The Dell Inspiron 14 7420 is less suited for gaming and 3D applications due to its integrated GPU, which is less powerful than dedicated GPUs, and its standard screen refresh rate of 60Hz. In contrast, the Lenovo Legion Slim 7 boasts a high-performance Nvidia RTX 3060 dedicated GPU and a much higher screen refresh rate of 165Hz, which are both critical for a superior gaming experience and smoother 3D rendering.
Engineering and Design
6.9
7.8
6.9/10
OVERALL CPU SCORE
7.4/10
3.7/10
OVERALL GPU SCORE
7.1/10
16.0 GB
RAM
16.0 GB
The Lenovo Legion Slim 7 15.6" is good for engineering and design, while the Dell Inspiron 14 7420 is only fair.
The Dell Inspiron 14 7420 is favored for engineering and design due to its high-resolution touchscreen and Intel Iris Xe graphics suitable for less graphically intense tasks, while the Lenovo Legion Slim 7 with its AMD Ryzen 7 processor and Nvidia RTX 3060 GPU offers more power for demanding engineering software and better screen quality for detailed design work. However, the Dell is slightly lighter and thus more portable, with both offering a premium keyboard quality, but the Lenovo's superb screen brightness and higher refresh rate may be preferable for design precision despite its slightly heavier build.
Screen Quality
6.2
7.7
14.0in
SIZE
15.6in
1920 x 1200
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
165Hz
260.0 nits
BRIGHTNESS
350.0 nits
The Lenovo Legion Slim 7 has a better screen than the Dell Inspiron 14 7420 for general use, gaming and AI, engineering and design, and software development.
If you prioritize a vivid display for tasks like document editing or web browsing, both the Dell and Lenovo laptops will serve you well with adequate brightness and resolution. However, professionals in engineering or design who need true color representation may prefer the Lenovo for its superior coverage of color gamuts like DCI-P3 and Adobe RGB. Gamers and those working with 3D applications will find both options lacking due to insufficient refresh rates, although they do offer reasonable resolution and panel type.
Battery
7.5 Hours
9.0 Hours
The Dell Inspiron 14 7420 has 7.5 hours of battery life. The Lenovo Legion Slim 7 has 9 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
Very Good
Good
14.0in
SIZE
15.6in
3.6 lbs
WEIGHT
4.1 lbs
0.6in
THICKNESS
0.6in
The Dell Inspiron 14 7420 has very good portability, while the Lenovo Legion Slim 7 15.6" has good portability.
The most portable laptops are small, thin, and light.
Cost
$801
$1,200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Dell Inspiron 14 7420 has a price of $801 and the Lenovo Legion Slim 7 15.6" costs $1,200.
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Key similarities
General Use
7.5
7.7
1920 x 1200
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
260.0 nits
DISPLAY BRIGHTNESS
350.0 nits
7.5 Hours
BATTERY LIFE
9.0 Hours
8.0/10
KEYBOARD QUALITY SCORE
8.5/10
8.3/10
PORTABILITY SCORE
7.6/10
The Lenovo Legion Slim 7 15.6" and Dell Inspiron 14 7420 are both good for general use.
The Dell Inspiron 14 7420, with its efficient Intel i7 processor, 16GB of RAM, and higher resolution touchscreen, offers a balance of performance, screen quality and portability with satisfactory battery life, making it well-suited for a variety of general tasks.
Content Creation
7.3
7.7
6.9/10
OVERALL CPU SCORE
7.4/10
1920 x 1200
RESOLUTION
1920 x 1080
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Legion Slim 7 15.6" and Dell Inspiron 14 7420 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
7.5
6.9/10
OVERALL CPU SCORE
7.4/10
16.0 GB
RAM
16.0 GB
1920 x 1200
RESOLUTION
1920 x 1080
8.0/10
KEYBOARD QUALITY SCORE
8.5/10
The Lenovo Legion Slim 7 15.6" and Dell Inspiron 14 7420 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.
Build Quality
7.4
7.6
The Lenovo Legion Slim 7 15.6" and Dell Inspiron 14 7420 both have good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
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How the Dell Inspiron 14 7420 and the Lenovo Legion Slim 7 15.6" compare to other laptops
Spec Comparison
 |  | |
| Dell Inspiron 14 7420 | Lenovo Legion Slim 7 15.6" |
GENERAL | |||
|---|---|---|---|
| Price | |||
$801 | $1,200 | ||
Release Date | |||
Release Date | May 1, 2022 | May 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 12.4'' x 9'' x 0.66'' | 14'' x 9.9'' x 0.69'' | |
Weight | |||
Weight | 3.61 lbs | 4.19 lbs | |
Width | |||
Width | 12.36" | 14.02" | |
Depth | |||
Depth | 8.96" | 9.92" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-1255U | AMD Ryzen 7 5800H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 4 | |
RAM Slots | |||
RAM Slots | 2 | 1 | |
Storage | |||
Storage | 512 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 7.5 Hours | 9 Hours | |
Battery Capacity | |||
Battery Capacity | 54 Wh | 71 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 14" | 15.6" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1200 | 1920 x 1080 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 260 nits | 350 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.4/10 | 7.6/10 | |
Portability Score | |||
Portability Score | 8.3/10 | 7.6/10 | |
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 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6.8/10 | 8/10 | |
Webcam | |||
Webcam | 1080p | 720p | |
Fingerprint Reader | |||
Fingerprint Reader | Yes | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 1 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 2 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Ports | |||
Thunderbolt Ports | 0 | 0 | |
Shopping
Dell Inspiron 14 7420
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Dig into reviews and images
NotebookCheck
Allen Ngo | June 2022
"Notable qualities of the Inspiron 7420 2-in-1 include the 16:10 aspect ratio, strong hinges, 12th gen Intel CPU with optional GeForce MX graphics, and easy serviceability. Such features would typically cost hundreds of dollars more on higher-end alternatives from competing manufacturers. The value proposition is therefore relatively high for users looking to maximize bang for the buck."
Lenovo Legion Slim 7 15.6"
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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 14 7420 or the Lenovo Legion Slim 7 15.6"
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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