ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301 Comparison

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ASUS ROG Zephyrus G15 GA503

15.6 inches | January 2021

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ASUS ROG Flow X13 GV301

13.4 inches | January 2021

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ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301 Comparison Overview

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In this review, we will be comparing ROG Zephyrus G15 GA503 and ROG Flow X13 GV301, two laptops by ASUS. ASUS ROG Zephyrus G15 GA503 was introduced to market in January 2021 and ASUS ROG Flow X13 GV301 was launched in January 2021. Both ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 were launched within the same month so we are expecting this to be a fair comparison regarding age and available technology level.

Click for Available Configurations of the Laptops

Here is a brief look at the main features of ASUS ROG Zephyrus G15 GA503 and ASUS ROG Flow X13 GV301 before getting into our more detailed comparison.

ASUS ROG Zephyrus G15 GA503 Key Specs

Launched in January 2021
15.6" IPS LCD, 16:9 Aspect Ratio Display
CPU: AMD Ryzen 7 5800HS
GPU: GeForce RTX 3050 Ti Mobile 4GB
8GB Ram
355 x 243 x 19.9 mm (13.98 x 9.57 x 0.78 inches)
Weight: 1.9 kg (4.19 lbs)

ASUS ROG Flow X13 GV301 Key Specs

Launched in January 2021
13.4" Touchscreen - IPS LCD, 16:10 Aspect Ratio Display
CPU: AMD Ryzen 7 5800HS
GPU: GeForce GTX 1650 Mobile 4GB
16GB Ram
299 x 222 x 15.8 mm (11.77 x 8.74 x 0.62 inches)
Weight: 1.3 kg (2.87 lbs)

Let's read on the following sections in order to better understand in detail how ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 compares and decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose ASUS ROG Zephyrus G15 GA503 over ASUS ROG Flow X13 GV301

Side Bezel Thickness	4.8 mm vs 5.2 mm	0.4 mm thinner bezels
Display Size	15.6 inches vs 13.4 inches	Larger Screen Estate
Refresh Rate	144 Hz vs 120 Hz	Smoother media experience
Screen Type	Matte vs Glossy	potentially less reflections on screen
GPU Fabrication Process	8 nm vs 12 nm	Newer Generation GPU
GPU FLOPS	8.2 TFLOPS vs 3.195 TFLOPS	More RAM Options
Upgradable RAM	Yes vs No	Connect more device at the same time
Number of USB-A Ports	2x USB 3.2 vs 1x USB 3.2	Connects to the local network via Ethernet RJ45
Ethernet RJ45 Port	Yes vs No	Read & Write SD Cards with the built-in reader
SD Card Reader	Yes vs No

Reasons to choose ASUS ROG Flow X13 GV301 over ASUS ROG Zephyrus G15 GA503

Weight	1.30 kg vs 1.90 kg	0.6 kg lighter
Screen-to-Body Ratio	~78.4% vs ~77.8%	Larger screen area ratio
Screen PPI	169 ppi vs 141 ppi	More pixels per inch
2-in-1 Design	Yes vs No	Use like a tablet
Touch Screen	Yes vs No	Interact with your fingers
Screen Resolution	1920 x 1200 pixels vs 1920 x 1080 pixels	Higher pixel count screen
sRGB Color Space	100% vs 62.3%	Wider sRGB Color Space Coverage
Adobe RGB Profile	75% vs 47.3%	Wider Adobe RGB Coverage
Max Brightness	350 nits vs 300 nits	Brighter Screen
Charging Port Position	Left, Right vs Left	Flexible cable positions

Common Strengths of ASUS ROG Flow X13 GV301 and ASUS ROG Zephyrus G15 GA503

Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
USB Power Delivery	Yes vs Yes	Charging via USB port gives flexibility
RAM Type	PCI-E Gen 3.0 (4x) vs PCI-E Gen 3.0 (4x)	Fast RAM type
Upgradable Storage	Yes vs Yes	Option to increase the Storage size
SSD Type	NVMe vs NVMe	Faster Data Transfers
Dolby Atmos Support	Yes vs Yes	3D Surround Sound Support
Wi-Fi Standard	v6 vs v6	Fast and Reliable Wi-Fi Connections
Bluetooth Standard	v5.1 vs v5.1	Fast and Reliable Bluetooth Connections
HDMI Output	1x HDMI 2.0 vs 1x HDMI 2.0	Connect to External Displays via HDMI cable
VGA Output	No vs No	Connect to External Displays via VGA cable
Keyboard Backlight	Yes vs Yes	Easily see the keys under low light

ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the ASUS ROG Zephyrus G15 GA503 and the ASUS ROG Flow X13 GV301.

Physical Specs
Weight	1.9 kg (4.19 lbs)	1.3 kg (2.87 lbs)
Surface Area	863 cm2 (133.8 inches2)	664 cm2 (102.9 inches2)
Screen to Surface Ratio	~77.8%	~78.4%
Side Bezel Thickness	~4.8 mm	~5.2 mm
Weight per Inch of Screen	0.12 kg/inch	0.10 kg/inch
	0.264 lbs/inch	0.22 lbs/inch
Colors	White, Black	Black
Cover Opening Angle	180Â°	360Â°

Comparison of the ASUS ROG Zephyrus G15 GA503 and the ASUS ROG Flow X13 GV301 External Dimensions

Weight

ROG Zephyrus G15 GA503 weighs 1.9 kg (4.19 lbs), whereas the ROG Flow X13 GV301 weighs 1.3 kg (2.87 lbs). There is a notable difference in weight between these two laptops. However, it's important to consider that comparing their weights directly may not provide a complete picture since they also have different display sizes.

Weight Comparison

ASUS ROG Zephyrus G15 GA503 1.90 kg

Avg: 15.0-15.9" 1.95 kg

ASUS ROG Flow X13 GV301 1.30 kg

Avg: 13.0-13.9" 1.22 kg

Thickness Comparison

ASUS ROG Zephyrus G15 GA503 19.90 mm

Avg: 15.0-15.9" 20.17 mm

ASUS ROG Flow X13 GV301 15.80 mm

Avg: 13.0-13.9" 15.38 mm

Another value that we use for comparing the weights of the laptops is the Weight per Inch of Screen, which is calculated by dividing the total weight of the model with its usable diagonal screen size. This value for the ASUS ROG Zephyrus G15 GA503 is 0.12 kg/inch.In comparison, this value for the ASUS ROG Flow X13 GV301 is 0.10 kg/inch.Here are some of the best performing laptops in this area:

Microsoft Surface Go 4: 0.05 kg/inch
LG Gram SuperSlim 15.6 2023: 0.06 kg/inch
Asus ProArt PZ13 HT5306: 0.06 kg/inch
Asus Zenbook A14 UX3407: 0.06 kg/inch
Dell Latitude 7330: 0.07 kg/inch
Lenovo ThinkPad X1 Nano Gen 2: 0.07 kg/inch
LG Gram 14 2022: 0.07 kg/inch
LG Gram 14 2-in-1 2022: 0.07 kg/inch

ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301: Internals (CPU, GPU, RAM, Battery, SSD, etc.) Comparison

CPU Comparison

CPU Model	AMD Ryzen 7 5800HS AMD Ryzen 9 5900HS	AMD Ryzen 7 5800HS AMD Ryzen 9 5900HS AMD Ryzen 9 5980HS
Base Frequency	2.8 GHz	2.8 GHz
Turbo Frequency	4.4 GHz	4.4 GHz
Number of Cores	8	8
Number of Threads	16	16
L3 Cache	16 MB	16 MB
Integrated GPU	Radeon RX Vega 8	Radeon RX Vega 8
CPU Fabrication Process	7 nm	7 nm
Geekbench 5 (Single)	1407	1407
Geekbench 5 (Multi)	7144	7144
Cinebench 23 (Single)	1345	1345
Cinebench 23 (Multi)	10473	10473

Above you can see the CPU options and the CineBench and GeekBench test scores for both laptops, which gives an idea about what kind of performance difference you may experience between the ASUS ROG Zephyrus G15 GA503 and ASUS ROG Flow X13 GV301.

You may also read reviews of latest laptops with the same CPU ( AMD Ryzen 7 5800HS ) and compare them:

GPU Comparison

GPU Model	GeForce RTX 3050 Ti Mobile 4GB GeForce RTX 3060 Mobile 6GB GeForce RTX 3070 Mobile 8GB GeForce RTX 3080 Mobile 8GB	GeForce GTX 1650 Mobile 4GB GeForce RTX 3050 Mobile 4GB GeForce RTX 3050 Ti Mobile 4GB
Base Clock Frequency	735 MHz	1380 MHz
Boost CLock Frequency	1035 MHz	1515 MHz
TGP (Total Graphics Power)	75 W	50 W
Nvidia Optimus	Yes	Yes
Type	Dedicated	Dedicated
FLOPS	5.299 TFLOPS	3.103 TFLOPS
Memory Size	4 GB	4 GB
Memory Type	GDDR6	GDDR6
Memory Bus	128 bit	128 bit
Memory Speed	1500 MHz 12 Gbps effective	1500 MHz 12 Gbps effective
Shading Units Cores	2560	1024
TMUs	80	64
ROPs	32	32

GPU is as critical as the CPU for graphic heavy applications and the table above gives a picture of how the two GPU compares. FLOPS is a measure of a GPU's performance based on the number of floating-point arithmetic calculations that the processor can perform within a second. ASUS ROG Zephyrus G15 GA503 has a FLOPS value of 8.2 TFLOPS whereas the ASUS ROG Flow X13 GV301 ' has a FLOPS value of 3.195 TFLOPS. If graphical performance of the laptop is important for your use type, the ASUS ROG Zephyrus G15 GA503 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB 32GB 40GB 48GB	16GB 32GB
Memory Bus	1x8 GB	2x8 GB
RAM Clock	3200 MHz	3200 MHz
RAM Type	DDR4	LPDDR4X
Upgradable	Yes	No
Max RAM Size	48 GB
Total Slots	2	2
Memory Bus	PCI-E Gen 3.0 (4x)	PCI-E Gen 3.0 (4x)

The ROG Flow X13 GV301 provides a larger RAM capacity of 16 GB, which allows for smoother multitasking and improved performance in memory-demanding tasks compared to the ROG Zephyrus G15 GA503's RAM capacity of 8 GB.

LOCAL LLM Compatibility Evaluation

This quick guide shows what types of large language models (LLMs) each of these laptops could support, based on their respective hardware specifications. It's meant to help you compare their suitability for running AI models locally.

LLM Category	ASUS ROG Zephyrus G15 GA503	ASUS ROG Flow X13 GV301
Small Models(1-3B):Examples: Phi-2, Qwen-1.8B	✔ Run smoothly.	✔ Run smoothly.
Medium Models(7-8B):Examples: Mistral-7B, Qwen-7B	✖ Not supported.	✖ Not supported.
Large Models(13-30B):Examples: Mixtral, Qwen-14B	✖ Not supported.	✖ Not supported.
Extra-Large Models(65B+):Examples: LLaMA2-70B, Qwen1.5-72B	✖ Not supported on most systems. Requires high-end GPU or advanced setup.	✖ Not supported on most systems. Requires high-end GPU or advanced setup.

Note: Optimized (e.g., 4-bit) models may run on limited hardware. Performance depends on runtime and setup.

📌 MoE Models: Some models like Mixtral 8x7B and Qwen3-30B-A3B use a Mixture of Experts (MoE) design, activating only part of the model during inference. This means they can often run efficiently on laptops with 12–16 GB of VRAM when quantized.

BATTERY

BATTERY	90 Wh	62 Wh
Battery Type	Li-Ion	Li-Ion
Replaceable	No	No
Fast Charging	Yes	No
USB Power Delivery	Yes	Yes
Charging Port Position	Left	Left, Right
Charge Power	180 / 200 W	100 W
AC Adapter Weight	490 gramm

Moreover, the ROG Zephyrus G15 GA503 boasts a larger battery capacity of 90 Wh, offering extended usage time compared to the ROG Flow X13 GV301's62 Wh.

Battery Comparison

ASUS ROG Zephyrus G15 GA503 90 Wh

Avg: 15.0-15.9" 62.1 Wh

ASUS ROG Flow X13 GV301 62 Wh

Avg: 13.0-13.9" 53.1 Wh

STORAGE
Both laptops, the ROG Zephyrus G15 GA503 and the ROG Flow X13 GV301 have similar max. storage capacities of 1 TB, allowing for ample space to store files and applications.

Storage Options	512 GB, 1 TB	512 GB, 1 TB
Upgradable	Yes	Yes
Total Slots	2	1
Storage type	SSD (M2)	SSD (M2)
NVMe	Yes	Yes

If your budget allows, we recommend opting for the largest possible disk size, considering the potential increase in storage capacity needs in the future. However, please keep in mind the question 'What will the laptop be used for?' when making this decision. Of course, you can later upgrade the hard disk capacity by getting a larger disk. However, if your laptop has only one disk slot, it may not be as straightforward as a RAM upgrade, where you simply add or replace a module, as moving or cloning files to a new disk may be necessary.

ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301: Display Comparison

The display is an essential aspect to consider when comparing the ASUS ROG Zephyrus G15 GA503 and ASUS ROG Flow X13 GV301 since its is the component that you interact the most and significantly impact the experience.

Screen Area and Dimensions

Now let's look at the comparison of the actual display areas of both laptops below, keeping the bezels around the screens out of the equation. ROG Zephyrus G15 GA503 has a display size of 15.6".On the other hand, ROG Flow X13 GV301 has a smaller 13.4" display.The total usable screen area of the ROG Zephyrus G15 GA503 is 670cm² / 104inch² whereas the ROG Flow X13 GV301's total usable screen area is 521cm² / 81inch².

PPI (Pixels per Inch)
Additionally, the ROG Flow X13 GV301 features a higher pixel density with 169 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

ASUS ROG Zephyrus G15 GA503 141 PPI

Avg: 15.0-15.9" 144 PPI

ASUS ROG Flow X13 GV301 169 PPI

Avg: 13.0-13.9" 186 PPI

Refresh Rate
The ROG Zephyrus G15 GA503 offers a higher refresh rate of 144 Hz, resulting in smoother motion and improved visual experience.

Brightness
The ROG Flow X13 GV301 offers a higher maximum brightness of 350 nits, delivering a brighter screen.

Brightness Comparison

ASUS ROG Zephyrus G15 GA503 300 nits

Avg: 15.0-15.9" 319 nits

ASUS ROG Flow X13 GV301 350 nits

Avg: 13.0-13.9" 438 nits

ASUS ROG Zephyrus G15 GA503 vs ASUS ROG Flow X13 GV301 Connectivity Comparison

In terms of connectivity,

Wifi
Both laptops offer the same Wi-Fi standard (v6), ensuring fast and reliable wireless connections.

Below, you'll find a Wi-Fi Versions Table, along with their release dates and speeds, to provide a brief overview of its development.

Wi-Fi Versions and Speeds

Standard	Speed	Release Date	Network	Frequency Bands (GHz)
Wi-Fi 7	up to 40 Gbps (5 GB/s)	2023	802.11be	2.4, 5, 6
Wi-Fi 6E	up to 9.6 Gbps (1.2 GB/s)	2020	802.11ax	2.4, 5, 6
Wi-Fi 6	up to 9.6 Gbps (1.2 GB/s)	2019	802.11ax	2.4, 5
Wi-Fi 5	up to 6.93 Gbps (866.25 MB/s)	2014	802.11ac	2.4, 5
Wi-Fi 4	up to 600 Mbps (75 MB/s)	2009	802.11n	2.4, 5

* Please note that the provided transfer rates are maximum theoretical values, and real-life performance may vary based on environmental factors.

USB
Both ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 have USB-A ports. ROG Zephyrus G15 GA503 has 2x USB 3.2 USB-A ports, while ROG Flow X13 GV301 has 1x USB 3.2 USB-A ports.
Both ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 feature 2x USB 3.2 USB Type-C ports.

Below, you'll find a table of USB ports, along with their release dates and speeds.
To mitigate the confusion caused by generation names, the USB Implementers Forum (USB-IF) suggests using marketing names like USB 5Gbps, USB 10Gbps, and so forth, based on their respective transfer rates.

USB Type and Speeds

USB Type	Version	Speed	Date	Other Features/Explanations
USB4	Gen 4 (2.0)	80 Gbps	2022	Also known as USB 80Gbps
USB4	Gen 3×2	40 Gbps	2019	Also known as USB 40Gbps
USB 3.2	3.2 Gen 2x2	20 Gbps	2019	Double the data transfer rates of Gen 2
USB 3.2	3.2 Gen 2	10 Gbps	2017	Previously known as USB 3.1
USB 3.2	3.2 Gen 1	5 Gbps	2017	Previously known as USB 3.0
USB 3.1	3.1 Gen 2	10 Gbps	2013	Faster data transfer rates
USB 3.0	3.1 Gen 1	5 Gbps	2010	SuperSpeed USB, improved data transfer rates
USB 2.0	2.0	480 Mbps	2000	High-speed data transfer
USB 1.0	1.0	1.5 Mbps	1996	Original USB standard

Thunderbolt
Neither ROG Zephyrus G15 GA503 nor ROG Flow X13 GV301 has Thunderbolt port.

HDMI
Both ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 feature an HDMI port (1x HDMI 2.0) for connecting to external monitors.

Below, you'll find a comparison table detailing different HDMI versions, including their bandwidth, color depth, maximum resolution, and release dates. This information can be helpful in understanding the capabilities of each HDMI version and choosing the most suitable one for your needs.

HDMI Comparison Table

HDMI Version	Maximum Resolution	Bandwidth (Gbps)	Color Depth (bits)	Release Date
HDMI 2.1-2.1b	7680 x 4320 *(8K)* @ 60p 3840 x 2160 *(4K)* @ 120p	48.0	48	2017
HDMI 2.0-2.0b	3840 x 2160 *(4K)* @ 60p	18.0	48	2013
HDMI 1.4-1.4b	3840 x 2160 *(4K)* @ 30p	10.2	48	2009
HDMI 1.3-1.3a	2560 x 1440 @ 60p	10.2	48	2006
HDMI 1.0-1.2a	1920 x 1200 @ 60p	4.95	24	2002

* Please note that the provided resolution values represent the maximum supported resolution, and actual display quality may depend on other factors such as source content and connected devices.

SD Card Reader
ROG Zephyrus G15 GA503 is equipped with an SD Card Reader for easy access to memory cards. ROG Flow X13 GV301 does not have an SD Card Reader.

Audio Jack
Both ROG Zephyrus G15 GA503 and ROG Flow X13 GV301 are equipped with a 3.5mm Audio Jack, providing seamless connection to headphones and speakers.

To summarize the connectivity and ports details, please refer to the table below to see them listed.

Connectivity and Ports
WiFi Standard (latest: v7)	v6	v6
Bluetooth (latest: v5.4)	v5.1	v5.1
USB-A (latest: 3.2)	2x USB 3.2	1x USB 3.2
USB Type-C (latest: USB4 2.0)	2x USB 3.2	2x USB 3.2
Thunderbolt (latest: 4)	No	No
HDMI (latest: 2.1)	1x HDMI 2.0	1x HDMI 2.0
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Optional	Optional
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	Yes	No
SD CardReader	Yes	No
Proprietary Charging Port	Yes	No