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Vivobook S 15
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Flex 5 14
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What we think

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The PerfectRec laptop team Learn more
Updated January 10, 2024·

The ASUS Vivobook S 15 offers a larger screen and slightly better build, but the Lenovo Flex 5 14 wins in battery life and portability, also offering a touchscreen with a higher resolution and a better aspect ratio. The Vivobook might have an edge for general use and engineering tasks, but the Flex 5 14 is a more viable option for on-the-go use and tasks that benefit from a touchscreen. Both are well-suited for general use and have similar performance for 3D and engineering applications, without being ideal for intensive gaming. 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 14.
Advantages of the Lenovo Flex 5 14
  • Very good portability
  • Very good battery life
  • Good keyboard

Key differences

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Screen Quality

6.3
Vivobook S 15
Flex 5 14
6.4
15.6in
SIZE
14.0in
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
60Hz
REFRESH RATE
60Hz
267.0 nits
BRIGHTNESS
277.0 nits
The ASUS Vivobook S 15 and the Lenovo Flex 5 14 have similar screen quality.

Battery

9.0 Hours
Vivobook S 15
Flex 5 14
11.5 Hours
The ASUS Vivobook S 15 has 9 hours of battery life. The Lenovo Flex 5 14 has 11.5 hours of battery life.

Portability

Good
Vivobook S 15
Flex 5 14
Very Good
15.6in
SIZE
14.0in
3.9 lbs
WEIGHT
3.4 lbs
0.7in
THICKNESS
0.7in
The Lenovo Flex 5 14 has very good portability, while the ASUS Vivobook S 15 has good portability.
The most portable laptops are small, thin, and light.

Cost

$800
Vivobook S 15
Flex 5 14
$950
Product image
Product image

$400

$600

$800

$1,000

$1,200

$1,400

The ASUS Vivobook S 15 has a price of $800 and the Lenovo Flex 5 14 costs $950.
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Key similarities

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General Use

7.7
Vivobook S 15
Flex 5 14
7.7
1920 x 1080
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
267.0 nits
DISPLAY BRIGHTNESS
277.0 nits
9.0 Hours
BATTERY LIFE
11.5 Hours
6.7/10
KEYBOARD QUALITY SCORE
7.0/10
7.7/10
PORTABILITY SCORE
8.3/10
The ASUS Vivobook S 15 and Lenovo Flex 5 14 are both good for general use.

Gaming and AI

6.5
Vivobook S 15
Flex 5 14
6.4
2.4/10
OVERALL GPU SCORE
2.4/10
1920 x 1080
RESOLUTION
1920 x 1200
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 14 are both only fair for gaming and AI.

Engineering and Design

7.2
Vivobook S 15
Flex 5 14
7.1
7.4/10
OVERALL CPU SCORE
6.8/10
2.4/10
OVERALL GPU SCORE
2.4/10
16.0 GB
RAM
16.0 GB
The ASUS Vivobook S 15 and Lenovo Flex 5 14 are both good for engineering and design.

Content Creation

7.6
Vivobook S 15
Flex 5 14
7.6
7.4/10
OVERALL CPU SCORE
6.8/10
1920 x 1080
RESOLUTION
1920 x 1200
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS Vivobook S 15 and Lenovo Flex 5 14 are both good for content creation.

Software Development

7.4
Vivobook S 15
Flex 5 14
7.4
7.4/10
OVERALL CPU SCORE
6.8/10
16.0 GB
RAM
16.0 GB
1920 x 1080
RESOLUTION
1920 x 1200
6.7/10
KEYBOARD QUALITY SCORE
7.0/10
The Lenovo Flex 5 14 and ASUS Vivobook S 15 are both good for software development.

Build Quality

7.0
Vivobook S 15
Flex 5 14
7.0
The ASUS Vivobook S 15 and Lenovo Flex 5 14 both have good build quality.

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How the ASUS Vivobook S 15 and the Lenovo Flex 5 14 compare to other laptops

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Spec Comparison

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ASUS Vivobook S 15Lenovo Flex 5 14
ASUS Vivobook S 15Lenovo Flex 5 14

GENERAL

Price
$800
$950
Release Date
May 1, 2023December 1, 2022
Overall Dimensions
14.2'' x 9.2'' x 0.74''12.3'' x 8.9'' x 0.7''
Weight
3.97 lbs3.42 lbs

INTERNAL

Processor
AMD Ryzen 7 5800HAMD Ryzen 7 7730U
Graphics
Vega 8 Vega 8
Mux Switch / Advanced Optimus
NoNo
RAM
16 GB16 GB
DDR Memory Version
45

BATTERY

Battery Life
9 Hours11.5 Hours
Battery Capacity
70 Wh52.5 Wh

SCREEN

Diagonal Size
15.6"14"
Display Technology
IPSIPS
Resolution
1920 x 10801920 x 1200
Refresh Rate
60Hz60Hz
Display Brightness
267 nits277 nits

RELIABILITY, APPEARANCE & ACOUSTICS

Build Quality Score
7/107/10
Portability Score
7.7/108.3/10
Gaming Laptop Appearance
NoNo
Fan Noise Score
7.5/107.5/10
Keyboard Lighting Color
WhiteWhite
Warranty Period
1 year1 year

HARDWARE FEATURES

Keyboard Quality Score
6.8/107/10
Speaker Quality Score
6/106/10
Webcam
720p1080p
Fingerprint Reader
YesYes
Backlit Keyboard
YesYes
Number Pad
YesNo

CONNECTIVITY

USB Type-A
22
USB-C ports
11
USB-C Charging
YesYes
Display Outputs
32
Thunderbolt Ports
00

Shopping

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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 14

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Dig into reviews and images

NotebookCheck

Allen Ngo | May 2021
"The highlight of the latest IdeaPad Flex 5 14 is clearly its AMD CPU. The octa-core Ryzen 7 5700U is insanely fast even when compared to the best Tiger Lake Ultrabooks in the market or even Core H CPUs in many gaming laptops. It's a lot of raw processing power for what is supposed to be a budget 14-inch convertible. If your daily workloads can benefit from extra multi-thread CPU performance, then look no further than the inexpensive AMD-powered Lenovo IdeaPad Flex 5 14. For regular on-the-road browsing or video streaming, however, a slimmer and lighter 10th gen Core Yoga, Spectre, or XPS would be a more balanced option."

Get a great deal on the ASUS Vivobook S 15 or the Lenovo Flex 5 14

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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About the laptop team

Joe Golden, Ph.D

CEO and Laptops Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.

Jason Lew

Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.

Chandradeep Chowdhury

Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.

Craig Russell

Laptops Expert
Craig is a UK-based laptops expert. Craig works in IT, where he recommends and supports laptops and PCs for clients and has been recommending laptops on Reddit for five years.

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