A comparison of specs, key information, reviews, and best pricing from top retailers
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Updated January 10, 2024·
The ASUS ROG Zephyrus G15 is more expensive, offering better performance for 3D, machine learning, and intensive gaming due to a superior GPU and processor, also featuring a higher resolution screen and longer battery life, which enhances portability. In comparison, the Dell G15 5520 is less expensive, slightly heavier, and has a shorter battery life, but it still provides sufficient power for general and engineering use with a capable processor and GPU. The choice depends on your budget and whether you need a higher-end gaming laptop (ASUS) or a more budget-friendly option for everyday tasks and some gaming (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 ASUS ROG Zephyrus G15
- Very good for content creation
- Very good overall build quality
- Good portability
- Best in class speakers
Advantages of the Dell G15 5520
- Very good keyboard
Key differences
Screen Quality
7.9
7.1
15.6in
SIZE
15.6in
2560 x 1440
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
165Hz
REFRESH RATE
165Hz
309.0 nits
BRIGHTNESS
251.0 nits
The ASUS ROG Zephyrus G15 has a better screen than the Dell G15 5520 for general use, gaming and AI, engineering and design, and content creation.
The ASUS ROG Zephyrus G15, with its high-resolution display and impressive brightness, provides sharp and vibrant visuals that are ideal for general use and detailed enough for precision work required in engineering and design. However, despite these qualities, its lower refresh rate hampers the smoothness needed in fast-paced gaming or 3D rendering. On the other hand, the Dell G15's good screen quality stems from sufficient resolution and brightness for daily tasks and professional design work, but like the ASUS, it falls short for gaming and 3D applications due to a less-than-ideal refresh rate.
Battery
9.5 Hours
6.0 Hours
The ASUS ROG Zephyrus G15 has 9.5 hours of battery life. The Dell G15 5520 has 6 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
Fair
15.6in
SIZE
15.6in
4.1 lbs
WEIGHT
5.5 lbs
0.7in
THICKNESS
1.0in
The ASUS ROG Zephyrus G15 has good portability, while the Dell G15 5520 has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
8.5
7.4
The ASUS ROG Zephyrus G15 has very good build quality, while the Dell G15 5520 has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$1,637
$1,000
$500
$1,000
$1,500
$2,000
$2,500
The ASUS ROG Zephyrus G15 has a price of $1,637 and the Dell G15 5520 costs $1,000.
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Key similarities
General Use
7.9
7.9
2560 x 1440
RESOLUTION
1920 x 1080
IPS
DISPLAY TECHNOLOGY
IPS
309.0 nits
DISPLAY BRIGHTNESS
251.0 nits
9.5 Hours
BATTERY LIFE
6.0 Hours
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
7.5/10
PORTABILITY SCORE
6.3/10
The Dell G15 5520 and ASUS ROG Zephyrus G15 are both good for general use.
The ASUS ROG Zephyrus G15 is favored for general use due to its superior screen quality, better battery life, and lighter weight, making it more portable compared to the Dell G15 5520. However, the Dell G15 5520 is also a competent choice with a good quality keyboard and solid build but has a shorter battery life and heavier build which impacts its portability.
Gaming and AI
7.5
7.7
7.4/10
OVERALL GPU SCORE
7.3/10
2560 x 1440
RESOLUTION
1920 x 1080
165Hz
REFRESH RATE
165Hz
Yes
SUPPORTS DLSS
Yes
No
MUX SWITCH / ADVANCED OPTIMUS
No
6.5/10
FAN NOISE SCORE
6.7/10
The Dell G15 5520 and ASUS ROG Zephyrus G15 are both good for gaming and AI.
PerfectRec’s Gaming and AI Score strongly emphasizes graphics processing capability, while also taking into account other factors that impact suitability for gaming and AI work.
Engineering and Design
8.0
8.2
7.5/10
OVERALL CPU SCORE
9.1/10
7.4/10
OVERALL GPU SCORE
7.3/10
16.0 GB
RAM
16.0 GB
The Dell G15 5520 and ASUS ROG Zephyrus G15 are both very good for engineering and design.
PerfectRec’s Engineering and Design Score takes into account the many different features of the laptop that make it more or less suitable for graphic design and 3D rendering work.
Content Creation
8.0
7.9
7.5/10
OVERALL CPU SCORE
9.1/10
2560 x 1440
RESOLUTION
1920 x 1080
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
Although they have very similar scores, PerfectRec considers ASUS ROG Zephyrus G15 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
7.4
7.5
7.5/10
OVERALL CPU SCORE
9.1/10
16.0 GB
RAM
16.0 GB
2560 x 1440
RESOLUTION
1920 x 1080
6.5/10
KEYBOARD QUALITY SCORE
8.5/10
The Dell G15 5520 and ASUS ROG Zephyrus G15 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.
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How the ASUS ROG Zephyrus G15 and the Dell G15 5520 compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Zephyrus G15 | Dell G15 5520 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,637 | $1,000 | ||
Release Date | |||
Release Date | May 1, 2021 | May 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 14'' x 9.6'' x 0.78'' | 14.1'' x 10.7'' x 1.06'' | |
Weight | |||
Weight | 4.19 lbs | 5.55 lbs | |
Width | |||
Width | 13.98" | 14.06" | |
Depth | |||
Depth | 9.57" | 10.74" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 9 5900HS | Intel i7-12700H | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 5 | |
RAM Slots | |||
RAM Slots | 1 | 2 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 9.5 Hours | 6 Hours | |
Battery Capacity | |||
Battery Capacity | 90 Wh | 56 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 15.6" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1440 | 1920 x 1080 | |
Refresh Rate | |||
Refresh Rate | 165Hz | 165Hz | |
Display Brightness | |||
Display Brightness | 309 nits | 251 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 7.4/10 | |
Portability Score | |||
Portability Score | 7.5/10 | 6.4/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | Yes | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 6.5/10 | 6.8/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.5/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.5/10 | 8.8/10 | |
Webcam | |||
Webcam | No Webcam | 720p | |
Fingerprint Reader | |||
Fingerprint Reader | Yes | No | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | No | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 3 | |
USB-C ports | |||
USB-C ports | 2 | 1 | |
USB-C Charging | |||
USB-C Charging | Yes | No | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
ASUS ROG Zephyrus G15
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Dig into reviews and images
NotebookCheck
Florian Glaser | February 2021
"As long as you're aware of the fact that the GeForce RTX 3080 laptop version can only unfold its potential to a limited extent due to Asus's low TDP setting and that it can be slower than a fast RTX 3070 laptop, the ROG Zephyrus G15 GA503Q cuts a fine figure. One of the biggest highlights turns out to be the WQHD panel, since it attracts customers with 165 Hz, relatively fast response times, FreeSync, and good color-space coverage. Other selling points are the surprisingly rich sound, the long battery life, and the sleek design. In terms of looks, the white edition stands out nicely from the competition."
Dell G15 5520
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Dig into reviews and images
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."
Get a great deal on the ASUS ROG Zephyrus G15 or the Dell G15 5520
About ASUS
ASUS, a Taiwanese electronics brand, is one of the largest personal computer vendor by market share. The majority of their laptops are targeted towards personal use or gaming. Their most popular product lines include the budget-friendly VivoBook, more premium ZenBook, and their TUF and ROG gaming laptops, the latter of which has a reputation for excellent gaming performance.
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.
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