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What we think
The PerfectRec laptop team Learn more
Updated January 10, 2024·
The Dell G15 5520 offers high performance in 3D, machine learning, and engineering tasks and is suitable for intensive gaming with its powerful processor and graphics card. However, it's heavier and has a shorter battery life, which affects portability. On the other hand, the Lenovo Slim Pro 7 14 has a better screen with higher resolution and touchscreen capabilities, is lighter, and has a longer battery life, making it more portable and suitable for on-the-go use, but with less power for demanding software or games compared to the Dell. The Lenovo also has a more modern appearance, and for general use, it provides high quality across the board. If portability and screen quality are your main concerns, go with the Lenovo, but if you need more power for demanding tasks and gaming, the Dell would be the better choice. 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 keyboard
Advantages of the Lenovo Slim Pro 7 14
- Very good for general use
- Very good for content creation
- Very good portability
- Very good battery life
Key differences
Gaming and AI
7.7
6.7
7.3/10
OVERALL GPU SCORE
4.8/10
1920 x 1080
RESOLUTION
2560 x 1600
165Hz
REFRESH RATE
90Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
6.7/10
FAN NOISE SCORE
8.0/10
The Dell G15 5520 is good for gaming and AI, while the Lenovo Slim Pro 7 14 is only fair.
The Dell G15 5520 with its Nvidia RTX 3060 and a high screen refresh rate is well-equipped for smooth gaming and 3D applications, while the Lenovo Slim Pro 7 14's Nvidia RTX 3050 and a moderately high refresh rate, also provides a solid experience but with possibly less graphic intensity.
Screen Quality
7.1
7.4
15.6in
SIZE
14.5in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
165Hz
REFRESH RATE
90Hz
251.0 nits
BRIGHTNESS
334.0 nits
The Dell G15 5520 has a better screen than the Lenovo Slim Pro 7 14 for gaming and AI, while the Lenovo Slim Pro 7 14 has a better screen for general use, engineering and design, content creation, and software development.
For general use, both the Dell G15 and Lenovo Slim Pro 7 have displays with sufficient resolution and brightness, providing clear and vibrant images for everyday tasks. Engineers and designers will appreciate that both laptops offer good color accuracy and wide color gamuts, ensuring that the colors on the screen closely match their intended designs. However, gamers and 3D artists may find the screens lacking due to their lower refresh rates, which can result in less smooth visuals during fast-paced action or animation.
Battery
6.0 Hours
12.0 Hours
The Dell G15 5520 has 6 hours of battery life. The Lenovo Slim Pro 7 14 has 12 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
14.5in
5.5 lbs
WEIGHT
3.5 lbs
1.0in
THICKNESS
0.6in
The Lenovo Slim Pro 7 14 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
$1,200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Dell G15 5520 has a price of $1,000 and the Lenovo Slim Pro 7 14 costs $1,200.
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Key similarities
General Use
7.9
8.0
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
251.0 nits
DISPLAY BRIGHTNESS
334.0 nits
6.0 Hours
BATTERY LIFE
12.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
7.0/10
6.3/10
PORTABILITY SCORE
8.4/10
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 7 14 to be very good for general use, while the Dell G15 5520 is good.
The Lenovo Slim Pro 7 14 outperforms the Dell G15 5520 in terms of general use primarily due to its superior screen quality, with higher resolution and brightness, coupled with excellent portability thanks to its lighter weight and significantly longer battery life. While both laptops share similar CPU and RAM characteristics, which are very important for performance, the Lenovo's advantages in the screen and portability departments, as well as a slightly better battery life, make it more suitable for general use situations where mobility and long periods of use away from power sources are crucial.
Engineering and Design
8.2
7.7
9.1/10
OVERALL CPU SCORE
7.9/10
7.3/10
OVERALL GPU SCORE
4.8/10
16.0 GB
RAM
16.0 GB
Although they have very similar scores, PerfectRec considers Dell G15 5520 to be very good for engineering and design, while the Lenovo Slim Pro 7 14 is good.
The Dell G15 5520 stands out for engineering and design use with its powerful Intel i7 processor, substantial RAM, and Nvidia RTX 3060 graphics unit, essential for demanding tasks, complemented by a high refresh rate IPS screen that supports a decent color space coverage for design accuracy. Conversely, the Lenovo Slim Pro 7 14 boasts a high resolution, superior screen quality with greater brightness and color space coverage, a more portable design, and quieter operation, but with a slightly less potent AMD Ryzen processor and Nvidia RTX 3050 GPU which, while still robust, may not handle the most intensive engineering simulations as smoothly as the Dell.
Content Creation
7.9
8.0
9.1/10
OVERALL CPU SCORE
7.9/10
1920 x 1080
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
Although they have very similar scores, PerfectRec considers Lenovo Slim Pro 7 14 to be very good for content creation, while the Dell G15 5520 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
7.5
7.8
9.1/10
OVERALL CPU SCORE
7.9/10
16.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
8.5/10
KEYBOARD QUALITY SCORE
7.0/10
The Lenovo Slim Pro 7 14 and Dell G15 5520 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 Slim Pro 7 14 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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How the Dell G15 5520 and the Lenovo Slim Pro 7 14 compare to other laptops
Spec Comparison
 |  | |
| Dell G15 5520 | Lenovo Slim Pro 7 14 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,000 | $1,200 | ||
Release Date | |||
Release Date | May 1, 2022 | February 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 14.1'' x 10.7'' x 1.06'' | 12.9'' x 8.9'' x 0.61'' | |
Weight | |||
Weight | 5.55 lbs | 3.5 lbs | |
Width | |||
Width | 14.06" | 12.91" | |
Depth | |||
Depth | 10.74" | 8.92" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-12700H | AMD Ryzen 7 7735HS | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 0 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 6 Hours | 12 Hours | |
Battery Capacity | |||
Battery Capacity | 56 Wh | 73 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 14.5" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 90Hz | |
Display Brightness | |||
Display Brightness | 251 nits | 334 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.4/10 | 7.8/10 | |
Portability Score | |||
Portability Score | 6.4/10 | 8.4/10 | |
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 | 8/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 7/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 8.8/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
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 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | N/A | |
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 Slim Pro 7 14
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Dig into reviews and images
PCWorld
Matthew S. Smith | May 2023
"The Lenovo Slim Pro 7 is an attractive, portable laptop that’s ideal if you need a combination of CPU and GPU performance. It also nails the fundamentals with solid connectivity, an enjoyable keyboard, a large touchpad, and top-notch webcam. Display quality is a weakness, but it’s an acceptable compromise for the laptop’s extremely competitive $1,199 MSRP. The Slim Pro 7 is a versatile, affordable laptop and hard to beat for the price."
Get a great deal on the Dell G15 5520 or the Lenovo Slim Pro 7 14
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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