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Updated January 10, 2024·
The ASUS Vivobook S 15 is often slightly more expensive but offers more storage and a bigger battery, which could translate to slightly better performance and longer use between charges. It comes with an AMD processor and integrated graphics, suitable for general use and some light engineering. The Lenovo Flex 5 16, often slightly less expensive, has a sharper touchscreen display with a higher resolution, which might be preferable for creative tasks or if you prefer to use a stylus or touch interface. It is equipped with an Intel processor and graphics, and may have better color accuracy for media work. The Flex 5 also folds back for versatile use as a tablet, but be aware it has half the storage capacity of the Vivobook. In terms of weight, the Flex 5 is slightly heavier, which might affect portability. Both laptops have similar build quality, keyboard comfort, and are marked as suitable for intensive gaming, although actual gaming performance may be limited due to their integrated graphics solutions. 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 Vivobook S 15
- The ASUS Vivobook S 15 has no clear advantages over the Lenovo Flex 5 16.
Advantages of the Lenovo Flex 5 16
- Good overall display quality
- Very good battery life
- Good keyboard
Key differences
Screen Quality
6.3
7.3
15.6in
SIZE
16.0in
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
60Hz
267.0 nits
BRIGHTNESS
400.0 nits
The Lenovo Flex 5 16 has a better screen than the ASUS Vivobook S 15 for general use, gaming and AI, and engineering and design.
The ASUS Vivobook S 15 provides adequate display clarity and brightness for everyday tasks and engineering applications but lacks the color range professionals may seek for precise design work. Meanwhile, the Lenovo Flex 5 16 offers a superior visual experience with both higher brightness and a wider color gamut, making it better suited for engineering and design, delivering more accurate color reproduction. Both laptops, however, fall short for 3D gaming due to modest refresh rates, where faster screen updates are essential for smooth visuals.
Battery
9.0 Hours
11.5 Hours
The ASUS Vivobook S 15 has 9 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.
Cost
$908
$740
$200
$400
$600
$800
$1,000
$1,200
$1,400
The ASUS Vivobook S 15 has a price of $908 and the Lenovo Flex 5 16 costs $740.
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Key similarities
General Use
7.7
7.6
1920 x 1080
RESOLUTION
2560 x 1600
IPS
DISPLAY TECHNOLOGY
IPS
267.0 nits
DISPLAY BRIGHTNESS
400.0 nits
9.0 Hours
BATTERY LIFE
11.5 Hours
6.7/10
KEYBOARD QUALITY SCORE
7.0/10
7.7/10
PORTABILITY SCORE
7.4/10
The ASUS Vivobook S 15 and Lenovo Flex 5 16 are both good for general use.
The ASUS Vivobook S 15 with its Ryzen processor and large battery offers a balance of performance and longevity, suitable for everyday tasks, but its standard Full HD screen and heavier design may limit portability. In contrast, the Lenovo Flex 5 16 with a higher resolution touchscreen and a versatile 2-in-1 design excels in media consumption and portability despite a smaller battery and less storage.
Gaming and AI
6.3
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
7.5/10
FAN NOISE SCORE
7.5/10
The ASUS Vivobook S 15 and Lenovo Flex 5 16 are both only fair for gaming and AI.
The ASUS Vivobook S 15's integrated AMD Vega 8 graphics and standard 60Hz screen refresh rate provide a fair gaming experience for a general laptop but may not deliver high-end gaming performance or optimal visuals for 3D rendering. Similarly, the Lenovo Flex 5 16's integrated Iris Xe graphics and 60Hz refresh rate can handle moderate gaming and 3D tasks, but the higher screen resolution and better color coverage offer a somewhat improved visual experience, though not to the extent of a dedicated gaming laptop.
Engineering and Design
7.1
7.2
7.4/10
OVERALL CPU SCORE
6.9/10
3.7/10
OVERALL GPU SCORE
3.7/10
16.0 GB
RAM
16.0 GB
The Lenovo Flex 5 16 and ASUS Vivobook S 15 are both good for engineering and design.
The ASUS Vivobook S 15, with its AMD Ryzen processor and ample RAM, provides solid computing performance for engineering and design, supported by a decent integrated GPU that, while not top-tier for intense 3D work, can handle moderate design tasks, along with a full HD screen that has reasonable color coverage and brightness. The Lenovo Flex 5 16 offers a higher screen resolution with better color accuracy, making it better for precise design work, and it has an Intel i7 processor with Iris Xe graphics, which is adequate for engineering tasks; additionally, the Flex's 2-in-1 convertible design could benefit users looking for versatility in use but it’s slightly heavier which affects portability.
Content Creation
7.6
7.6
7.4/10
OVERALL CPU SCORE
6.9/10
1920 x 1080
RESOLUTION
2560 x 1600
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS Vivobook S 15 and Lenovo Flex 5 16 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
7.4
7.5
7.4/10
OVERALL CPU SCORE
6.9/10
16.0 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 Vivobook S 15 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.
Portability
Good
Good
15.6in
SIZE
16.0in
3.9 lbs
WEIGHT
4.6 lbs
0.7in
THICKNESS
0.7in
The ASUS Vivobook S 15 and Lenovo Flex 5 16 both have good portability.
The most portable laptops are small, thin, and light.
Build Quality
7.0
7.0
The ASUS Vivobook S 15 and Lenovo Flex 5 16 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 ASUS Vivobook S 15 and the Lenovo Flex 5 16 compare to other laptops
Spec Comparison
 |  | |
| ASUS Vivobook S 15 | Lenovo Flex 5 16 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$908 | $740 | ||
Release Date | |||
Release Date | May 1, 2023 | April 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 14.2'' x 9.2'' x 0.74'' | 14.1'' x 10'' x 0.74'' | |
Weight | |||
Weight | 3.97 lbs | 4.63 lbs | |
Width | |||
Width | 14.17" | 14.09" | |
Depth | |||
Depth | 9.17" | 9.99" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | AMD Ryzen 7 5800H | Intel i7-1255U | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 4 | 4 | |
RAM Slots | |||
RAM Slots | 1 | 0 | |
Storage | |||
Storage | 1024 GB | 512 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 9 Hours | 11.5 Hours | |
Battery Capacity | |||
Battery Capacity | 70 Wh | 52.5 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 15.6" | 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 | 267 nits | 400 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7/10 | 7/10 | |
Portability Score | |||
Portability Score | 7.7/10 | 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 | 7.5/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 6.8/10 | 7/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 6/10 | 6.8/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | Yes | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | Yes | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 2 | |
USB-C ports | |||
USB-C ports | 1 | 1 | |
USB-C Charging | |||
USB-C Charging | Yes | Yes | |
Display Outputs | |||
Display Outputs | 3 | 2 | |
Thunderbolt Version | |||
Thunderbolt Version | N/A | 4 | |
Shopping
ASUS Vivobook S 15
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Dig into reviews and images
NotebookCheck
Mario Petzold | February 2023
"Internals make Asus VivoBook S15 laptop a compelling option. The Asus multimedia laptop may look rather below-average with its modest black chassis, lack of a dedicated GPU, limited RAM and meagre port selection without Thunderbolt support. But your impression of the device will start changing once you set your eyes on its high-contrast OLED capable of producing deep blacks and highly accurate colours. And your opinion will change completely when the VivoBook is switched on. The AMD CPU can effortlessly keep up with powerful rivals from Intel. The integrated Radeon graphics blows away Intel's iGPU when it comes to graphics workloads such as rendering and simpler games."
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 Vivobook S 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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