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Updated January 10, 2024·
The ASUS Zenbook Duo 14 is often significantly more expensive than the Lenovo Flex 5 16, yet offers lower battery life and less portability. However, it's lighter with a smaller form factor and dual screens, which improve multitasking for general use, and engineering tasks. The Lenovo, despite being less expensive, has a larger screen with a higher resolution, more RAM for better performance, and a longer battery life, making it well suited for longer work sessions. Both laptops have similar CPUs and GPUs, indicating comparable performance for 3D modeling and machine learning workloads. If you prioritize screen real estate and battery life, consider the Lenovo; if the second screen and portability are more important, the ASUS could be a better fit. 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 Zenbook Duo 14
- Very good portability
- Good speakers
Advantages of the Lenovo Flex 5 16
- Good for engineering and design
- Good overall display quality
- Very good battery life
- Good keyboard
Key differences
Engineering and Design
6.6
7.2
5.5/10
OVERALL CPU SCORE
6.9/10
3.7/10
OVERALL GPU SCORE
3.7/10
8.0 GB
RAM
16.0 GB
The Lenovo Flex 5 16 is good for engineering and design, while the ASUS Zenbook Duo 14 is only fair.
The ASUS Zenbook Duo 14's high-resolution secondary touchscreen and color accurate primary display, along with its top-tier i7 processor and 8 GB of RAM, make it suitable for multitasking and design applications, yet its integrated Iris Xe graphics may limit performance in 3D tasks requiring robust GPU capabilities. On the other hand, the Lenovo Flex 5 16 has a larger, higher-resolution main touchscreen favorable for engineering and design, supported by a similarly capable i7 processor and double the RAM at 16 GB, providing smoother performance for memory-intensive applications, but it also relies on integrated graphics which may not be ideal for highly demanding engineering software or advanced design work.
Screen Quality
6.8
7.3
14.0in
SIZE
16.0in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
60Hz
314.0 nits
BRIGHTNESS
400.0 nits
The Lenovo Flex 5 16 has a better screen than the ASUS Zenbook Duo 14 for general use, gaming and AI, engineering and design, content creation, and software development.
If you prioritize a crisp and vibrant display for everyday tasks like browsing and watching videos, both the ASUS Zenbook Duo 14 and Lenovo Flex 5 16 offer suitable resolution and brightness. For more specialized work such as engineering and design, where exact color representation matters, these laptops may fulfill your needs with their wide color gamuts. However, for gaming or working with 3D applications, you may find the refresh rate lacking, which is crucial for smooth visuals and may detract from the experience despite the resolution and panel type being adequate.
Battery
8.5 Hours
11.5 Hours
The ASUS Zenbook Duo 14 has 8.5 hours of battery life. The Lenovo Flex 5 16 has 11.5 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
Very Good
Good
14.0in
SIZE
16.0in
3.6 lbs
WEIGHT
4.6 lbs
0.6in
THICKNESS
0.7in
The ASUS Zenbook Duo 14 has very good portability, while the Lenovo Flex 5 16 has good portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8
7.0
The ASUS Zenbook Duo 14 and Lenovo Flex 5 16 both have good build quality, though the ASUS Zenbook Duo 14 has somewhat better build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$999
$740
$200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
The ASUS Zenbook Duo 14 has a price of $999 and the Lenovo Flex 5 16 costs $740.
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Key similarities
General Use
7.1
7.6
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
314.0 nits
DISPLAY BRIGHTNESS
400.0 nits
8.5 Hours
BATTERY LIFE
11.5 Hours
6.7/10
KEYBOARD QUALITY SCORE
7.0/10
8.2/10
PORTABILITY SCORE
7.4/10
The Lenovo Flex 5 16 and ASUS Zenbook Duo 14 are both good for general use.
The Lenovo Flex 5 16 trumps the ASUS Zenbook Duo 14 in general use primarily due to its superior memory, which translates to better multitasking, and a higher-resolution, brighter display that enhances viewing experiences. While both laptops are somewhat similar in weight, the Lenovo has an additional advantage with its convertible design and a longer battery life, which make it more versatile and suitable for longer use away from power sources.
Gaming and AI
6.1
6.2
3.7/10
OVERALL GPU SCORE
3.7/10
1920 x 1080
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
60Hz
No
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.0/10
FAN NOISE SCORE
7.5/10
The Lenovo Flex 5 16 and ASUS Zenbook Duo 14 are both only fair for gaming and AI.
The ASUS Zenbook Duo 14 and the Lenovo Flex 5 16 are both equipped with integrated Intel Iris Xe graphics, which provides modest gaming performance but isn't as powerful as dedicated gaming GPUs. Moreover, both laptops have a screen refresh rate of 60Hz, which is standard for many tasks, but for high-end gaming or 3D applications where higher refresh rates can provide smoother visuals, it may not be sufficient.
Content Creation
7.3
7.6
5.5/10
OVERALL CPU SCORE
6.9/10
1920 x 1080
RESOLUTION
2560 x 1600
8.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The Lenovo Flex 5 16 and ASUS Zenbook Duo 14 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
7.0
7.5
5.5/10
OVERALL CPU SCORE
6.9/10
8.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
2560 x 1600
6.7/10
KEYBOARD QUALITY SCORE
7.0/10
The Lenovo Flex 5 16 and ASUS Zenbook Duo 14 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 Zenbook Duo 14 and the Lenovo Flex 5 16 compare to other laptops
Spec Comparison
 |  | |
| ASUS Zenbook Duo 14 | Lenovo Flex 5 16 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$999 | $740 | ||
Release Date | |||
Release Date | August 1, 2021 | April 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 12.8'' x 8.7'' x 0.67'' | 14.1'' x 10'' x 0.74'' | |
Weight | |||
Weight | 3.64 lbs | 4.63 lbs | |
Width | |||
Width | 12.76" | 14.09" | |
Depth | |||
Depth | 8.74" | 9.99" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i7-1195G7 | Intel i7-1255U | |
RAM | |||
RAM | 8 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 4 | |
RAM Slots | |||
RAM Slots | 0 | 0 | |
Storage | |||
Storage | 512 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8.5 Hours | 11.5 Hours | |
Battery Capacity | |||
Battery Capacity | 70 Wh | 52.5 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 14" | 16" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 1920 x 1080 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 60Hz | |
Display Brightness | |||
Display Brightness | 314 nits | 400 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.8/10 | 7/10 | |
Portability Score | |||
Portability Score | 8.2/10 | 7.4/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | No | 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 | 6.8/10 | 7/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 7/10 | 6.8/10 | |
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 | 1 | 2 | |
USB-C ports | |||
USB-C ports | 2 | 1 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Version | |||
Thunderbolt Version | 4 | 4 | |
Shopping
ASUS Zenbook Duo 14
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Dig into reviews and images
NotebookCheck
Allen Ngo | May 2020
"The Asus ZenBook Duo's second screen is like the Apple Touch Bar, but better. Most would agree that having two screens instead of one can really boost productivity and the ZenBook Duo is no different in this regard. It's tough going back to just one screen after becoming accustomed to spacious dual-screen setups. For a laptop form factor, however, users will have to accept some compromises. Firstly, weight is the most obvious drawback as the system is several hundred grams heavier than a regular ZenBook 14. Additionally, colors on the second screen will not be as vivid as the main display."
Lenovo Flex 5 16
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Dig into reviews and images
NotebookCheck
Andreas Osthoff | April 2023
"The Lenovo IdeaPad Flex 5 is a solidly equipped, 2-in-1 in the lower price segment. Performance is definitely sufficient for everyday tasks and in tests the battery proved itself to be very economical. That aside, there is a lot of standard fare on show and a search for real highlights ends in vain. The low color coverage and reflective display can be avoided by going for an optional 2.5K display but this also presumably results in poorer battery life. The cooling uses only one fan and leads to a raised temperature on one side of the device under load. Additionally, there is very loud fan noise, also under load or when gaming. On top of that, we also occasionally noticed electronic noises."
Get a great deal on the ASUS Zenbook Duo 14 or the Lenovo Flex 5 16
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 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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