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What we think
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Updated January 10, 2024·
The Dell Alienware X17 R2 offers higher performance, particularly for intensive engineering tasks, gaming, or 3D/machine learning applications, with its more powerful processor and graphics card. However, it comes at a higher cost and is less portable due to its larger size and weight. The Lenovo Legion Slim 7 16", on the other hand, is lighter and more affordable, making it better suited for general use and portability, while still capable for lighter gaming and productivity tasks. 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 Alienware X17 R2
- Excellent for engineering and design
- Very good overall build quality
- Best in class speakers
Advantages of the Lenovo Legion Slim 7 16"
- Very good for software development
- Good portability
- Good battery life
Key differences
Gaming and AI
8.9
8.2
9.3/10
OVERALL GPU SCORE
8.3/10
1920 x 1080
RESOLUTION
2560 x 1600
480Hz
REFRESH RATE
240Hz
Yes
SUPPORTS DLSS
Yes
Yes
MUX SWITCH / ADVANCED OPTIMUS
Yes
7.0/10
FAN NOISE SCORE
7.5/10
The Dell Alienware X17 R2 and Lenovo Legion Slim 7 16" are both very good for gaming and AI, though the Dell Alienware X17 R2 is somewhat better.
The Dell Alienware X17 R2 excels in gaming and 3D applications thanks to its more powerful Nvidia RTX 3080 Ti GPU and a higher screen refresh rate of 480, which makes fast-paced visuals smoother. In comparison, the Lenovo Legion Slim 7 16" has a moderately capable Nvidia RTX 4060 GPU and a lower screen refresh rate of 240, but it offers a higher resolution display, which results in sharper images, albeit with potentially less fluid motion in fast-moving games.
Screen Quality
8.5
8.7
17.3in
SIZE
16.0in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
480Hz
REFRESH RATE
240Hz
367.0 nits
BRIGHTNESS
502.0 nits
The Lenovo Legion Slim 7 has a better screen than the Dell Alienware X17 R2 for general use, engineering and design, and content creation.
For general use, the Dell Alienware X17 R2 and Lenovo Legion Slim 7 both offer sharp, bright displays with high resolutions suitable for everyday tasks and viewing content, ensuring clear and vivid images. Both laptops are also excellent for engineering and design due to their wide color coverage, providing accurate color reproduction for professionals who need precision for their work. However, for gaming and 3D applications where smooth motion is crucial, their lower refresh rates might not deliver the optimal experience compared to displays designed specifically for high refresh rate performance.
Battery
2.0 Hours
7.0 Hours
The Dell Alienware X17 R2 has 2 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
Fair
Good
17.3in
SIZE
16.0in
6.8 lbs
WEIGHT
4.4 lbs
0.8in
THICKNESS
0.6in
The Lenovo Legion Slim 7 16" has good portability, while the Dell Alienware X17 R2 has only fair portability.
The most portable laptops are small, thin, and light.
Build Quality
8.5
7.6
The Dell Alienware X17 R2 has very good build quality, while the Lenovo Legion Slim 7 16" has good build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,000
$1,344
$500
$1,000
$1,500
$2,000
$2,500
$3,000
The Dell Alienware X17 R2 has a price of $2,000 and the Lenovo Legion Slim 7 16" costs $1,344.
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Key similarities
General Use
8.2
8.2
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
367.0 nits
DISPLAY BRIGHTNESS
502.0 nits
2.0 Hours
BATTERY LIFE
7.0 Hours
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
6.0/10
PORTABILITY SCORE
7.5/10
The Dell Alienware X17 R2 and Lenovo Legion Slim 7 16" are both very good for general use.
The Dell Alienware X17 R2, with a powerful CPU, abundant RAM, and high-performing GPU, excels in demanding applications while also providing a decent screen size and quality; however, it is heavier and has lower portability and battery life.
Engineering and Design
9.1
8.6
9.4/10
OVERALL CPU SCORE
9.1/10
9.3/10
OVERALL GPU SCORE
8.3/10
32.0 GB
RAM
16.0 GB
Although they have very similar scores, PerfectRec considers Dell Alienware X17 R2 to be excellent for engineering and design, while the Lenovo Legion Slim 7 16" is very good.
The Dell Alienware X17 R2 boasts higher RAM and a more powerful GPU in the form of the Nvidia RTX 3080 Ti which is advantageous for demanding engineering and design tasks, while the Lenovo Legion Slim 7 has a lighter build and a higher-resolution screen that can be beneficial for detailed visuals and easier portability.
Content Creation
8.3
8.3
9.4/10
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 Dell Alienware X17 R2 and Lenovo Legion Slim 7 16" are both very 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
7.8
8.0
9.4/10
OVERALL CPU SCORE
9.1/10
32.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
8.5/10
KEYBOARD QUALITY SCORE
8.5/10
Although they have very similar scores, PerfectRec considers Lenovo Legion Slim 7 16" to be very good for software development, while the Dell Alienware X17 R2 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.
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How the Dell Alienware X17 R2 and the Lenovo Legion Slim 7 16" compare to other laptops
Spec Comparison
 |  | |
| Dell Alienware X17 R2 | Lenovo Legion Slim 7 16" |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,000 | $1,344 | ||
Release Date | |||
Release Date | December 1, 2021 | May 1, 2023 | |
Overall Dimensions | |||
Overall Dimensions | 15.7'' x 11.8'' x 0.82'' | 14.1'' x 10.2'' x 0.69'' | |
Weight | |||
Weight | 6.82 lbs | 4.4 lbs | |
Width | |||
Width | 15.72" | 14.08" | |
Depth | |||
Depth | 11.79" | 10.21" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-12900HK | AMD Ryzen 7 7840HS | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 1 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 2 Hours | 7 Hours | |
Battery Capacity | |||
Battery Capacity | 87 Wh | 99.9 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 17.3" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 480Hz | 240Hz | |
Display Brightness | |||
Display Brightness | 367 nits | 502 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 8.5/10 | 7.6/10 | |
Portability Score | |||
Portability Score | 6.1/10 | 7.5/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8.5/10 | 8.5/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.5/10 | 8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
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 | 2 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 4 | 3 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | N/A | |
Shopping
Dell Alienware X17 R2
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Dig into reviews and images
NotebookCheck
Allen Ngo | May 2022
"The Alienware x17 R2 recognizes targets a significantly higher TGP of 175 W for a roughly 30 percent performance boost over laptops running on the ~100 W GeForce RTX 3080 Ti like the Razer Blade 15 or Gigabyte Aero YE5. Similar results can be found through the CPU as well. This single aspect of the Alienware is perhaps the biggest differentiating factor between it and other ultrathin gaming laptops. Of course, the "performance at all cost" approach comes with drawbacks. Power consumption in particular is through the roof and battery life suffers because of it even when on the lowest performance settings."
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 Alienware X17 R2 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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