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Updated January 10, 2024·
Choosing between the Dell G15 5520 and the Lenovo IdeaPad Slim 7i Pro largely depends on your needs. The Dell G15 is bulkier and slightly heavier, making it less portable but it offers better performance for gaming and engineering applications due to its powerful graphics card. Its display has a higher refresh rate but lower resolution, suitable for fast-paced games but not as sharp for detailed work. The Lenovo, on the other hand, is more portable with a lighter build and longer battery life. It has a higher resolution touchscreen that's better for multitasking and viewing high-resolution content but lacks the gaming performance of the Dell. If you primarily work with graphics-intensive applications or game frequently, the Dell G15 may be preferable, whereas if portability, battery life, and a sharper display are your priorities, the Lenovo Slim 7i Pro could serve you best. 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 G15 5520
- Very good for engineering and design
- Good for gaming and AI
- Very good speakers
Advantages of the Lenovo IdeaPad Slim 7i Pro
- Very good portability
Key differences
General Use
7.9
7.3
1920 x 1080
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
251.0 nits
DISPLAY BRIGHTNESS
395.0 nits
6.0 Hours
BATTERY LIFE
8.5 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
6.3/10
PORTABILITY SCORE
8.7/10
The Dell G15 5520 and Lenovo IdeaPad Slim 7i Pro are both good for general use, though the Dell G15 5520 is somewhat better.
The Dell G15 5520 features a high-performance CPU and graphics unit, making it suitable for both general use and gaming, but its heavier weight makes it less portable and it has a shorter battery life compared to the Lenovo IdeaPad Slim 7i Pro, which offers a very high-resolution screen and longer battery life, ideal for users valuing portability and screen quality for everyday tasks.
Gaming and AI
7.7
6.1
7.3/10
OVERALL GPU SCORE
3.7/10
1920 x 1080
RESOLUTION
2880 x 1800
165Hz
REFRESH RATE
90Hz
Yes
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
6.7/10
FAN NOISE SCORE
7.5/10
The Dell G15 5520 is good for gaming and AI, while the Lenovo IdeaPad Slim 7i Pro is only fair.
The Dell G15 5520 provides a better gaming and 3D experience with its more powerful Nvidia RTX 3060 graphics and a higher screen refresh rate of up to 165Hz, enabling smoother visuals and gameplay. In contrast, the Lenovo IdeaPad Slim 7i Pro has integrated Intel Iris Xe graphics and a lower refresh rate of 90Hz, which offers decent performance but is less optimal for high-end gaming and intensive 3D tasks.
Engineering and Design
8.2
7.0
9.1/10
OVERALL CPU SCORE
5.0/10
7.3/10
OVERALL GPU SCORE
3.7/10
16.0 GB
RAM
16.0 GB
The Dell G15 5520 is very good for engineering and design, while the Lenovo IdeaPad Slim 7i Pro is good.
The Dell G15 5520 is equipped with a higher-performing CPU and GPU, offering superior speed and graphics for demanding engineering and design tasks compared to the Lenovo IdeaPad Slim 7i Pro which has capable but less powerful processor and integrated graphics. However, the Slim 7i Pro offers a higher-resolution display with touchscreen capabilities and is significantly lighter and more portable, with a longer battery life and higher portability score, though at the cost of gaming-specific features like hardware ray tracing and DLSS found in the Dell.
Content Creation
7.9
7.4
9.1/10
OVERALL CPU SCORE
5.0/10
1920 x 1080
RESOLUTION
2880 x 1800
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Dell G15 5520 and Lenovo IdeaPad Slim 7i Pro are both good for content creation, though the Dell G15 5520 is somewhat better.
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.
Screen Quality
7.1
7.7
15.6in
SIZE
14.0in
1920 x 1080
RESOLUTION
2880 x 1800
IPS
DISPLAY TECHNOLOGY
IPS
165Hz
REFRESH RATE
90Hz
251.0 nits
BRIGHTNESS
395.0 nits
The Dell G15 5520 has a better screen than the Lenovo IdeaPad Slim 7i Pro for content creation, while the Lenovo IdeaPad Slim 7i Pro has a better screen for general use, and engineering and design.
For general use, both the Dell G15 and Lenovo IdeaPad Slim 7i Pro offer excellent resolution and brightness, with the Lenovo edging out with a slightly superior panel type that enhances viewing angles and color reproduction. When it comes to engineering and design, while both laptops provide good coverage of professional color gamuts like DCI-P3 and Adobe RGB, the Lenovo again has a slight advantage, ensuring that colors are more accurately represented. However, neither is ideal for 3D and gaming, as they both lack a high refresh rate which is crucial for smooth motion rendering, although their resolutions and panel types provide a moderate level of detail and image quality.
Battery
6.0 Hours
8.5 Hours
The Dell G15 5520 has 6 hours of battery life. The Lenovo IdeaPad Slim 7i Pro has 8.5 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
Fair
Very Good
15.6in
SIZE
14.0in
5.5 lbs
WEIGHT
3.0 lbs
1.0in
THICKNESS
0.6in
The Lenovo IdeaPad Slim 7i Pro has very good portability, while the Dell G15 5520 has only fair portability.
The most portable laptops are small, thin, and light.
Cost
$1,000
$799
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
The Dell G15 5520 has a price of $1,000 and the Lenovo IdeaPad Slim 7i Pro costs $799.
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Key similarities
Software Development
7.5
7.3
9.1/10
OVERALL CPU SCORE
5.0/10
16.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2880 x 1800
8.5/10
KEYBOARD QUALITY SCORE
8.0/10
The Dell G15 5520 and Lenovo IdeaPad Slim 7i Pro 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
7.8
The Lenovo IdeaPad Slim 7i Pro and Dell G15 5520 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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We’re constantly working to improve.
How the Dell G15 5520 and the Lenovo IdeaPad Slim 7i Pro compare to other laptops
Spec Comparison
 |  | |
| Dell G15 5520 | Lenovo IdeaPad Slim 7i Pro |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,000 | $799 | ||
Release Date | |||
Release Date | May 1, 2022 | October 1, 2021 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 10.7'' x 1.06'' | 12.3'' x 8.7'' x 0.62'' | |
Weight | |||
Weight | 5.55 lbs | 3.04 lbs | |
Width | |||
Width | 14.06" | 12.29" | |
Depth | |||
Depth | 10.74" | 8.74" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-12700H | Intel i5-11300H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 4 | |
RAM Slots | |||
RAM Slots | 2 | 0 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6 Hours | 8.5 Hours | |
Battery Capacity | |||
Battery Capacity | 56 Wh | 60.7 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 14" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2880 x 1800 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 90Hz | |
Display Brightness | |||
Display Brightness | 251 nits | 395 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.4/10 | 7.8/10 | |
Portability Score | |||
Portability Score | 6.4/10 | 8.8/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 6.8/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 8/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 8.8/10 | 7.5/10 | |
Webcam | |||
Webcam | 720p | 720p | |
Fingerprint Reader | |||
Fingerprint Reader | No | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 3 | 1 | |
USB-C ports | |||
USB-C ports | 1 | 2 | |
USB-C Charging | |||
USB-C Charging | No | Yes | |
Display Outputs | |||
Display Outputs | 2 | 2 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | 4 | |
Shopping
Dell G15 5520
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Rtings
Olivier Martin, Ryan Lim, and John Peroramas | April 2023
"The Dell G15 (2022) is a 15.6-inch budget gaming laptop, and is great for gaming. You can configure the laptop with powerful Intel 12th Gen. CPUs and various NVIDIA dedicated GPUs, all of which deliver a smooth gaming experience at 1080p. There's also a QHD 240Hz display option if you want better visuals, though you'll have to pair it with the top-end NVIDIA GeForce RTX 3070 Ti to get good frame rates. It doesn't get overly hot or loud under load, and there's no noticeable throttling on the CPU or GPU. Unfortunately, the 120Hz panel has a slow response time, causing noticeable ghosting, and it doesn't support variable refresh rate."
Lenovo IdeaPad Slim 7i Pro
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Dig into reviews and images
NotebookCheck
Allen Ngo | October 2021
"The main selling point of the IdeaPad Slim 7i Pro versus a regular IdeaPad Slim 7 is its faster Core H-series CPU. In reality, the Core i7-11370H is only marginally faster than the U-series Core i7-1165G7 to the point where most users are not likely to notice the benefits. The slight performance uptick comes at the cost of slightly higher power consumption as well meaning owners will have to deal with potentially warmer temperatures or louder fans to compensate. Unless if you happen to be a power user, then the regular non-Pro model will be more than enough. Once you go 90 Hz, you can't go back."
Get a great deal on the Dell G15 5520 or the Lenovo IdeaPad Slim 7i Pro
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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Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
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