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Updated January 10, 2024·
The Asus ZenBook Pro Duo 15 offers premium features like high-end performance, dual displays, and advanced graphics, ideal for intensive tasks such as 3D modeling, machine learning, and gaming. If these are your priorities and budget is less of a concern, it could serve you well. On the other hand, the Lenovo Flex 5 16 may be more budget-friendly, offering sufficient performance for general use and some engineering applications, with the added versatility of a 2-in-1 design that enhances portability and ease of use. The battery life is likely to be longer on the Flex due to lower power requirements. Consider how each feature aligns with your needs and how much you're willing to invest. 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 Pro Duo 15
- Very good for general use
- Excellent for engineering and design
- Good for gaming and AI
- Very good for software development
- Very good for content creation
- Very good overall display quality
- Best in class speakers
Advantages of the Lenovo Flex 5 16
- Very good battery life
Key differences
General Use
8.5
7.6
3840 x 2160
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
332.0 nits
DISPLAY BRIGHTNESS
400.0 nits
7.0 Hours
BATTERY LIFE
11.5 Hours
7.5/10
KEYBOARD QUALITY SCORE
7.0/10
7.1/10
PORTABILITY SCORE
7.4/10
The ASUS ZenBook Pro Duo 15 is very good for general use, while the Lenovo Flex 5 16 is good.
The ASUS ZenBook Pro Duo 15 outshines the Lenovo Flex 5 16 in general use due to its superior CPU, double the RAM, a high-quality OLED screen, and better graphics capability, making it more suitable for performance-intensive tasks; however, its heavier weight and shorter battery life make it less portable than the lighter Lenovo Flex 5 16, which also offers a longer battery life but has a less powerful CPU and half the memory. Additionally, while both have good quality keyboards and speakers, the ASUS has superior heat management, making it less prone to overheating during heavy usage, whereas the Lenovo Flex 5 16, despite having less robust specs, offers a unique 2-in-1 convertible design and better portability due to its lighter frame and longer-lasting battery.
Gaming and AI
7.8
6.2
7.8/10
OVERALL GPU SCORE
3.7/10
3840 x 2160
RESOLUTION
2560 x 1600
60Hz
REFRESH RATE
60Hz
Yes
SUPPORTS DLSS
No
No
MUX SWITCH / ADVANCED OPTIMUS
No
7.7/10
FAN NOISE SCORE
7.5/10
The ASUS ZenBook Pro Duo 15 is good for gaming and AI, while the Lenovo Flex 5 16 is only fair.
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
9.0
7.2
9.2/10
OVERALL CPU SCORE
6.9/10
7.8/10
OVERALL GPU SCORE
3.7/10
32.0 GB
RAM
16.0 GB
The ASUS ZenBook Pro Duo 15 is excellent for engineering and design, while the Lenovo Flex 5 16 is good.
The ASUS ZenBook Pro Duo 15 excels in engineering and design because it boasts a high-performance CPU, significant RAM, and a powerful GPU paired with high-quality OLED screen, making it well-suited for demanding tasks despite its lesser portability due to higher weight.
Content Creation
8.7
7.6
9.2/10
OVERALL CPU SCORE
6.9/10
3840 x 2160
RESOLUTION
2560 x 1600
32.0 GB
RAM
16.0 GB
OLED
DISPLAY TECHNOLOGY
IPS
The ASUS ZenBook Pro Duo 15 is very good for content creation, while the Lenovo Flex 5 16 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
8.3
7.5
9.2/10
OVERALL CPU SCORE
6.9/10
32.0 GB
RAM
16.0 GB
3840 x 2160
RESOLUTION
2560 x 1600
7.5/10
KEYBOARD QUALITY SCORE
7.0/10
The ASUS ZenBook Pro Duo 15 is very good for software development, while the Lenovo Flex 5 16 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.
Screen Quality
8.3
7.3
15.6in
SIZE
16.0in
3840 x 2160
RESOLUTION
2560 x 1600
OLED
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
60Hz
332.0 nits
BRIGHTNESS
400.0 nits
The ASUS Zenbook Pro Duo 15 has a better screen than the Lenovo Flex 5 16 for general use, gaming and AI, engineering and design, software development, and content creation.
The ASUS ZenBook Pro Duo 15 offers excellent visuals for general use and engineering tasks due to its high-resolution display and superior color accuracy, which are essential for detailed work and color-critical applications. Despite its advanced screen features, it falls short for gaming and 3D because of a lower refresh rate, which is crucial for smooth motion and fast-paced visuals in those areas. On the other hand, the Lenovo Flex 5 16 provides a balanced experience with decent resolution and brightness for everyday tasks and sufficient color range for engineering and design, but it also lacks the high refresh rate desired for optimal gaming and 3D performance.
Battery
7.0 Hours
11.5 Hours
The ASUS Zenbook Pro Duo 15 has 7 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.
Build Quality
7.6
7.0
The ASUS ZenBook Pro Duo 15 and Lenovo Flex 5 16 both have good build quality, though the ASUS ZenBook Pro Duo 15 has somewhat better build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,000
$779
$0
$500
$1,000
$1,500
$2,000
$2,500
$3,000
The ASUS ZenBook Pro Duo 15 has a price of $2,000 and the Lenovo Flex 5 16 costs $779.
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Key similarities
Portability
Good
Good
15.6in
SIZE
16.0in
5.1 lbs
WEIGHT
4.6 lbs
0.8in
THICKNESS
0.7in
The Lenovo Flex 5 16 and ASUS ZenBook Pro Duo 15 both have good portability.
The most portable laptops are small, thin, and light.
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How the ASUS ZenBook Pro Duo 15 and the Lenovo Flex 5 16 compare to other laptops
Spec Comparison
 |  | |
| ASUS ZenBook Pro Duo 15 | Lenovo Flex 5 16 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,000 | $779 | ||
Release Date | |||
Release Date | February 1, 2023 | April 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.8'' x 0.85'' | 14.1'' x 10'' x 0.74'' | |
Weight | |||
Weight | 5.16 lbs | 4.63 lbs | |
Width | |||
Width | 14.17" | 14.09" | |
Depth | |||
Depth | 9.81" | 9.99" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-12900H | Intel i7-1255U | |
RAM | |||
RAM | 32 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 4 | |
RAM Slots | |||
RAM Slots | 0 | 0 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 7 Hours | 11.5 Hours | |
Battery Capacity | |||
Battery Capacity | 92 Wh | 52.5 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 16" | |
Display Technology | |||
Display Technology | OLED | IPS | |
Resolution | |||
Resolution | 3840 x 2160 | 2560 x 1600 | |
Refresh Rate | |||
Refresh Rate | 60Hz | 60Hz | |
Display Brightness | |||
Display Brightness | 332 nits | 400 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.6/10 | 7/10 | |
Portability Score | |||
Portability Score | 7.1/10 | 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 | 7.8/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 7.5/10 | 7/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.6/10 | 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 Pro Duo 15
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Dig into reviews and images
PCWorld
Jared Newman | August 2021
"Benchmarks aside, the Asus ZenBook Pro Duo is hard to compare with other PCs. Its closest competition may be a multi-monitor desktop, or a laptop with an attached travel monitor. The Pro Duo is more portable and versatile than either of those options, especially with the software tools Asus has thrown on top. For a certain niche of artists, media creators, and gamers, all that might add up to something special, even if it’s unattainable for the rest of us."
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 Pro Duo 15 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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