Asus Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404 Comparison

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Asus Zenbook 14 OLED UM3402

14 inches | January 2023

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Asus Zenbook Pro 14 OLED UX6404

14.5 inches | January 2023

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Asus Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404 Comparison Overview

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In this review, we will be comparing Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404, two laptops by Asus. Asus Zenbook 14 OLED UM3402 was introduced to market in January 2023 and Asus Zenbook Pro 14 OLED UX6404 was launched in January 2023. Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 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 Zenbook 14 OLED UM3402 and Asus Zenbook Pro 14 OLED UX6404 before getting into our more detailed comparison.

Asus Zenbook 14 OLED UM3402 Key Specs

Launched in January 2023
14.0" OLED, 16:10 Aspect Ratio Display
CPU: AMD Ryzen 5 5625U
GPU: Radeon RX Vega 7
8GB Ram
313.6 x 220.6 x 16.9 mm (12.35 x 8.69 x 0.67 inches)
Weight: 1.39 kg (3.06 lbs)

Asus Zenbook Pro 14 OLED UX6404 Key Specs

Launched in January 2023
14.5" OLED, 16:10 Aspect Ratio Display
CPU: Intel Core i9 13900H
GPU: GeForce RTX 4060 Mobile 8GB
16GB Ram
321.8 x 223.3 x 17.9 mm (12.67 x 8.79 x 0.7 inches)
Weight: 1.6 kg (3.53 lbs)

Let's read on the following sections in order to better understand in detail how Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 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 Zenbook 14 OLED UM3402 over Asus Zenbook Pro 14 OLED UX6404

Weight	1.39 kg vs 1.60 kg	0.21 kg lighter
Screen PPI	243 ppi vs 234 ppi	More pixels per inch
Screen Opening Angle	180° vs 135°	More flexible screen
Max Brightness	600 nits vs 550 nits	Brighter Screen
CPU Fabrication Process	7 nm vs 10 nm	Newer Generation CPU
Speaker Loudness	81.7 dB vs 78.9 dB	Generates higher sound levels
Fingerprint Sensor	Yes vs No	Easy login with fingerprint
Avg. MSRP Price	$800-1200 vs $2400-2800	Lower Price (*may change depending on config, seller, location, and time)

Reasons to choose Asus Zenbook Pro 14 OLED UX6404 over Asus Zenbook 14 OLED UM3402

Screen-to-Body Ratio	~84.8% vs ~82.2%	Larger screen area ratio
Side Bezel Thickness	4.8 mm vs 6.1 mm	1.3 mm thinner bezels
Display Size	14.5 inches vs 14 inches	Larger Screen Estate
Noise Level	48.8 dB vs 52.5 dB	Less fan noise
Refresh Rate	120 Hz vs 90 Hz	Smoother media experience
GPU Fabrication Process	4 nm vs 7 nm	Newer Generation GPU
GPU FLOPS	14.3 TFLOPS vs 1.108 TFLOPS	Dedicated GPU unit
GPU Type	Dedicated vs Integrated	Flexible cable positions
Charging Port Position	Left, Right vs Right	Faster RAM Type
RAM Type	DDR5 vs LPDDR4X	More RAM Options
Upgradable RAM	Yes vs No	Faster RAM
RAM BUS	PCI-E Gen 4.0 (4x) vs PCI-E Gen 3.0 (4x)	Higher Resolution Camera
Webcam Resolution	1920 x 1080 vs 1920 x 720	Support audio, data, power and video all through one single port
Thunderbolt	v4 vs No

Common Strengths of Asus Zenbook Pro 14 OLED UX6404 and Asus Zenbook 14 OLED UM3402

Launch Dates	January 2023 vs January 2023	Both laptops are recent models
Screen Technology	OLED vs OLED	High Screen Quality
HDR Support	Yes, HDR10 vs Yes, Dolby Vision	Watch HDR Clips
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 4.0 (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	v6E vs v6E	Fast and Reliable Wi-Fi Connections
HDMI Output	1x HDMI 2.1 vs 1x HDMI 2.1	Connect to External Displays via HDMI cable
VGA Output	No vs No	Connect to External Displays via VGA cable
Built-in SD Card Reader	Yes vs Yes	Read & Write SD Cards
Keyboard Backlight	Yes vs Yes	Easily see the keys under low light

Common Weaknesses of Asus Zenbook Pro 14 OLED UX6404 and Asus Zenbook 14 OLED UM3402

Touchscreen Capability	No vs No	No Touchscreen Capability

Asus Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Asus Zenbook 14 OLED UM3402 and the Asus Zenbook Pro 14 OLED UX6404.

Physical Specs
Weight	1.39 kg (3.06 lbs)	1.6 kg (3.53 lbs)
Surface Area	692 cm2 (107.3 inches2)	719 cm2 (111.4 inches2)
Screen to Surface Ratio	~82.2%	~84.8%
Side Bezel Thickness	~6.1 mm	~4.8 mm
Weight per Inch of Screen	0.10 kg/inch	0.11 kg/inch
	0.22 lbs/inch	0.242 lbs/inch
Colors	Black	Black
Cover Opening Angle	180Â°	135Â°

Comparison of the Asus Zenbook 14 OLED UM3402 and the Asus Zenbook Pro 14 OLED UX6404 External Dimensions

Weight

Zenbook 14 OLED UM3402 weighs 1.39 kg (3.06 lbs), whereas the Zenbook Pro 14 OLED UX6404 weighs 1.6 kg (3.53 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

Displays size 14.0-14.9 inches

Asus Zenbook 14 OLED UM3402

Asus Zenbook Pro 14 OLED UX6404

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Thickness Comparison

Displays size 14.0-14.9 inches

Asus Zenbook 14 OLED UM3402

Asus Zenbook Pro 14 OLED UX6404

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Average

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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 Zenbook 14 OLED UM3402 is 0.10 kg/inch.In comparison, this value for the Asus Zenbook Pro 14 OLED UX6404 is 0.11 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 Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404: Internals (CPU, GPU, RAM, Battery, SSD, etc.) Comparison

CPU Comparison

CPU Model	AMD Ryzen 5 5625U AMD Ryzen 7 5825U AMD Ryzen 5 7530U AMD Ryzen 7 7730U	Intel Core i9 13900H
Base Frequency	2.3 GHz	2.6 GHz
Turbo Frequency	4.3 GHz	5.4 GHz
Number of Cores	6	14
Number of Threads	12	20
L3 Cache	16 MB	24 MB
Integrated GPU	AMD Radeon Vega 7	Intel Iris Xe Graphics (96 EU)
CPU Fabrication Process	7 nm	10 nm
Geekbench 5 (Single)	1426	1855
Geekbench 5 (Multi)	5943	14607
Cinebench 23 (Single)	1380	1952
Cinebench 23 (Multi)	8206	19500

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 Zenbook 14 OLED UM3402 and Asus Zenbook Pro 14 OLED UX6404.

You may also read reviews of latest laptops with the same CPUs and compare them:

Laptops with: AMD Ryzen 5 5625U

Laptops with: Intel Core i9 13900H

GPU Comparison

GPU Model	Radeon RX Vega 7	GeForce RTX 4060 Mobile 8GB GeForce RTX 4070 Mobile 8GB
Base Clock Frequency	300 MHz	1545 MHz
Boost CLock Frequency	1800 MHz	1890 MHz
TGP (Total Graphics Power)	45 W	115 W
Type	Integrated	Dedicated
FLOPS	1.613 TFLOPS	11.61 TFLOPS
Memory Size	System Shared	8 GB
Memory Type	System Shared	GDDR6
Memory Bus	System Shared	128 bit
Memory Speed	System Shared	2000 MHz 16 Gbps effective
Shading Units Cores	448	3072
TMUs	28	96
ROPs	8	48

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 Zenbook 14 OLED UM3402 has a FLOPS value of 1.108 TFLOPS whereas the Asus Zenbook Pro 14 OLED UX6404 ' has a FLOPS value of 14.3 TFLOPS. If graphical performance of the laptop is important for your use type, the Asus Zenbook Pro 14 OLED UX6404 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB	16GB 32GB 48GB
Memory Bus	2x4 GB	2x8 GB
RAM Clock	4266 MHz	4800 MHz
RAM Type	LPDDR4X	DDR5
Upgradable	No	Yes
Memory Bus	PCI-E Gen 3.0 (4x)	PCI-E Gen 4.0 (4x)

The Zenbook Pro 14 OLED UX6404 provides a larger RAM capacity of 16 GB, which allows for smoother multitasking and improved performance in memory-demanding tasks compared to the Zenbook 14 OLED UM3402'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 Zenbook 14 OLED (UM3402)	Asus Zenbook Pro 14 OLED (UX6404)
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.	✔ Good performance.
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	75 Wh	76 Wh
Replaceable	No	No
Fast Charging	No	Yes
USB Power Delivery	Yes	Yes
Charging Port Position	Right	Left, Right
Charge Power	65 W	200 W
Full Charging Time	1:50 hr	1:45 hr

On the other hand, the Zenbook Pro 14 OLED UX6404 features a higher battery capacity of 76 Wh, delivering longer usage time compared to the Zenbook 14 OLED UM3402's 75 Wh.

Battery Comparison

Displays size 14.0-14.9 inches

Asus Zenbook 14 OLED UM3402

Asus Zenbook Pro 14 OLED UX6404

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STORAGE
The Zenbook Pro 14 OLED UX6404 offers a larger max storage capacity of 2 TB, providing more room for storing files and data compared to the Zenbook 14 OLED UM3402's storage capacity of 1 TB.

Storage Options	256 GB, 512 GB, 1 TB	256 GB, 512 GB, 1 TB, 2 TB
Upgradable	Yes	Yes
Total Slots	1	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 Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404: Display Comparison

The display is an essential aspect to consider when comparing the Asus Zenbook 14 OLED UM3402 and Asus Zenbook Pro 14 OLED UX6404 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. Zenbook 14 OLED UM3402 has a display size of 14.0".On the other hand, Zenbook Pro 14 OLED UX6404 has a larger14.5" display.The total usable screen area of the Zenbook 14 OLED UM3402 is 568cm² / 88inch² whereas the Zenbook Pro 14 OLED UX6404's total usable screen area is 610cm² / 94inch².

PPI (Pixels per Inch)
Additionally, the Zenbook 14 OLED UM3402 features a higher pixel density with 243 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

Displays size 14.0-14.9 inches

Asus Zenbook 14 OLED UM3402

Asus Zenbook Pro 14 OLED UX6404

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Refresh Rate
The Zenbook Pro 14 OLED UX6404 offers a higher refresh rate of 120 Hz, resulting in smoother motion and improved visual experience.

Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 boast the same response time of 1.0 ms.

Brightness
The Zenbook 14 OLED UM3402 offers a higher maximum brightness of 600 nits, delivering a brighter screen.

Brightness Comparison

Displays size 14.0-14.9 inches

Asus Zenbook 14 OLED UM3402

Asus Zenbook Pro 14 OLED UX6404

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Asus Zenbook 14 OLED UM3402 vs Asus Zenbook Pro 14 OLED UX6404 Connectivity Comparison

In terms of connectivity,

Wifi
Both laptops offer the same Wi-Fi standard (v6E), 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 Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 feature 1x USB 3.2 USB-A ports.
Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 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
Zenbook Pro 14 OLED UX6404 is equipped with Thunderbolt 4 port. Zenbook 14 OLED UM3402 does not have Thunderbolt port.

HDMI
Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 feature an HDMI port (1x HDMI 2.1) 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
Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 come with an SD Card Reader for easy access to memory cards.

Audio Jack
Both Zenbook 14 OLED UM3402 and Zenbook Pro 14 OLED UX6404 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)	v6E	v6E
Bluetooth (latest: v5.4)	v5.3	v5.3
USB-A (latest: 3.2)	1x 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	Thunderbolt 4
HDMI (latest: 2.1)	1x HDMI 2.1	1x HDMI 2.1
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Yes	No
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	No	No
SD CardReader	Yes	Yes
Proprietary Charging Port	No	Yes