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Updated January 10, 2024·
The ASUS ROG Strix G18, being more expensive and larger, is suitable for intensive gaming, 3D rendering, machine learning, and engineering tasks due to its powerful processor, high-end graphics, and generous battery size, but it's heavier and less portable. Conversely, the Lenovo Flex 5 14 is more affordable, with a lighter and more compact build, and its touchscreen makes it versatile for general use. However, it cannot match the ASUS in performance for demanding applications; it's best for everyday tasks and light creative work. 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 ROG Strix G18
- Very good for general use
- Very good for engineering and design
- Very good for gaming and AI
- Very good for software development
- Very good for content creation
- Very good overall display quality
- Best in class speakers
- Very good keyboard
Advantages of the Lenovo Flex 5 14
- Very good portability
- Very good battery life
Key differences
General Use
8.3
7.7
2560 x 1600
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
422.0 nits
DISPLAY BRIGHTNESS
277.0 nits
8.0 Hours
BATTERY LIFE
11.5 Hours
8.0/10
KEYBOARD QUALITY SCORE
7.0/10
5.6/10
PORTABILITY SCORE
8.3/10
The ASUS ROG Strix G18 is very good for general use, while the Lenovo Flex 5 14 is good.
The ASUS ROG Strix G18 excels for general use due to its high-end CPU and GPU which grant powerful performance, alongside a high-quality screen; however, its heavier weight and shorter battery life hamper its portability compared to the Lenovo Flex 5 14. In contrast, the Flex 5 offers moderate performance suitable for everyday tasks, a touchscreen, and better battery life in a more portable design, making it versatile for users on the go.
Gaming and AI
8.7
6.2
8.9/10
OVERALL GPU SCORE
3.6/10
2560 x 1600
RESOLUTION
1920 x 1200
240Hz
REFRESH RATE
60Hz
Yes
SUPPORTS DLSS
No
Yes
MUX SWITCH / ADVANCED OPTIMUS
No
7.2/10
FAN NOISE SCORE
7.5/10
The ASUS ROG Strix G18 is very good for gaming and AI, while the Lenovo Flex 5 14 is only fair.
The ASUS ROG Strix G18 excels in gaming and 3D due to its powerful Nvidia RTX 4070 GPU and a high screen refresh rate of 240 Hz, providing superior graphics and smooth visuals. On the other hand, the Lenovo Flex 5 14, with its integrated AMD Ryzen 7 7730U Vega 8 graphics and a standard 60 Hz screen refresh rate, delivers a fair performance that's adequate for less demanding games and 3D tasks.
Engineering and Design
8.9
7.0
9.9/10
OVERALL CPU SCORE
6.9/10
8.9/10
OVERALL GPU SCORE
3.6/10
16.0 GB
RAM
16.0 GB
The ASUS ROG Strix G18 is very good for engineering and design, while the Lenovo Flex 5 14 is good.
The ASUS ROG Strix G18 has a more powerful CPU and GPU, which are essential for demanding engineering tasks and designing with complex software, and a higher quality screen compared to the Lenovo Flex 5 14, enhancing overall visual experience and productivity. While the Lenovo offers greater portability and a touchscreen, which may benefit certain design workflows, its lower performance hardware makes it less suited for intensive engineering applications compared to the ASUS.
Content Creation
8.6
7.6
9.9/10
OVERALL CPU SCORE
6.9/10
2560 x 1600
RESOLUTION
1920 x 1200
16.0 GB
RAM
16.0 GB
IPS
DISPLAY TECHNOLOGY
IPS
The ASUS ROG Strix G18 is very good for content creation, while the Lenovo Flex 5 14 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
8.1
7.4
9.9/10
OVERALL CPU SCORE
6.9/10
16.0 GB
RAM
16.0 GB
2560 x 1600
RESOLUTION
1920 x 1200
8.0/10
KEYBOARD QUALITY SCORE
7.0/10
The ASUS ROG Strix G18 is very good for software development, while the Lenovo Flex 5 14 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
8.7
6.4
18.0in
SIZE
14.0in
2560 x 1600
RESOLUTION
1920 x 1200
IPS
DISPLAY TECHNOLOGY
IPS
240Hz
REFRESH RATE
60Hz
422.0 nits
BRIGHTNESS
277.0 nits
The ASUS ROG Strix G18 has a better screen than the Lenovo Flex 5 14 for general use, gaming and AI, engineering and design, software development, and content creation.
For general use, the ASUS ROG Strix G18's screen offers sharp images and bright visuals due to its high resolution and good panel type, making it very suitable for everyday tasks like browsing and watching videos. The ASUS excels in engineering and design because it likely covers a wide range of colors accurately, crucial for professionals who need precise color representation. However, for gaming and 3D applications where the smoothness of motion is key, the lower refresh rate of the ASUS may lead to less fluid visuals compared to displays designed specifically for these purposes.
Battery
8.0 Hours
11.5 Hours
The ASUS ROG Strix G18 has 8 hours of battery life. The Lenovo Flex 5 14 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
Poor
Very Good
18.0in
SIZE
14.0in
6.6 lbs
WEIGHT
3.4 lbs
1.0in
THICKNESS
0.7in
The Lenovo Flex 5 14 has very good portability, while the ASUS ROG Strix G18 has poor portability.
The most portable laptops are small, thin, and light.
Build Quality
7.8
7.0
The ASUS ROG Strix G18 and Lenovo Flex 5 14 both have good build quality, though the ASUS ROG Strix G18 has somewhat better build quality.
PerfectRec’s Build Quality Score incorporates case materials, display and keyboard flex, hinge quality, and overall reliability.
Cost
$2,299
$950
$0
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The ASUS ROG Strix G18 has a price of $2,299 and the Lenovo Flex 5 14 costs $950.
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How the ASUS ROG Strix G18 and the Lenovo Flex 5 14 compare to other laptops
Spec Comparison
 |  | |
| ASUS ROG Strix G18 | Lenovo Flex 5 14 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,299 | $950 | ||
Release Date | |||
Release Date | April 1, 2023 | December 1, 2022 | |
Overall Dimensions | |||
Overall Dimensions | 15.7'' x 11.6'' x 1.06'' | 12.3'' x 8.9'' x 0.7'' | |
Weight | |||
Weight | 6.61 lbs | 3.42 lbs | |
Width | |||
Width | 15.71" | 12.32" | |
Depth | |||
Depth | 11.57" | 8.85" | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | Intel i9-13980HX | AMD Ryzen 7 7730U | |
RAM | |||
RAM | 16 GB | 16 GB | |
DDR Memory Version | |||
DDR Memory Version | 5 | 5 | |
RAM Slots | |||
RAM Slots | 2 | 0 | |
Storage | |||
Storage | 1024 GB | 1024 GB | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 11.5 Hours | |
Battery Capacity | |||
Battery Capacity | 90 Wh | 52.5 Wh | |
SCREEN | |||
|---|---|---|---|
Diagonal Size | |||
Diagonal Size | 18" | 14" | |
Display Technology | |||
Display Technology | IPS | IPS | |
Resolution | |||
Resolution | 2560 x 1600 | 1920 x 1200 | |
Refresh Rate | |||
Refresh Rate | 240Hz | 60Hz | |
Display Brightness | |||
Display Brightness | 422 nits | 277 nits | |
RELIABILITY, APPEARANCE & ACOUSTICS | |||
|---|---|---|---|
Build Quality Score | |||
Build Quality Score | 7.8/10 | 7/10 | |
Portability Score | |||
Portability Score | 5.7/10 | 8.3/10 | |
Gaming Laptop Appearance | |||
Gaming Laptop Appearance | Yes | No | |
Premium Business Laptop | |||
Premium Business Laptop | No | No | |
Fan Noise Score | |||
Fan Noise Score | 7.3/10 | 7.5/10 | |
HARDWARE FEATURES | |||
|---|---|---|---|
Keyboard Quality Score | |||
Keyboard Quality Score | 8/10 | 7/10 | |
Speaker Quality Score | |||
Speaker Quality Score | 9.6/10 | 6/10 | |
Webcam | |||
Webcam | 720p | 1080p | |
Fingerprint Reader | |||
Fingerprint Reader | No | Yes | |
Backlit Keyboard | |||
Backlit Keyboard | Yes | Yes | |
Number Pad | |||
Number Pad | Yes | No | |
CONNECTIVITY | |||
|---|---|---|---|
USB Type-A | |||
USB Type-A | 2 | 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 | N/A | |
Shopping
ASUS ROG Strix G18
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Dig into reviews and images
NotebookCheck
Florian Glaser | March 2023
"With the ROG Strix G18, Asus has made an almost consistently good debut in the still quite new 18-inch laptop segment. The base unit case shows a few signs of weakness in the area of stability and is something which has an effect on the perceived quality of the input devices (the chassis tends to rattle a bit). Nevertheless, thanks to generous port features (incl. Thunderbolt 4), a striking design, and extensive lighting (keyboard, LED strip on the front), gamers get a fitting gaming platform."
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 ROG Strix G18 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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