Asus Zenbook 14X OLED (UX3404, 2023) vs VivoBook Pro 16X 3D OLED (K6604, 2023)

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Intel Core i9 13980HX
GPU GeForce RTX 3050 Mobile 4GB


Evaluation of Asus Zenbook 14X OLED (UX3404, 2023) and VivoBook Pro 16X 3D OLED (K6604, 2023) important characteristics
System and application performance
Performance in popular 3D games
Viewing angle, color accuracy, brightness
Battery Life
Potential battery life in light and average use
Ports, webcam and other interfaces
Design, materials, durability and usability
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Key Differences

What are the key differences between the notebooks
Advantages of the Asus Zenbook 14X OLED (UX3404, 2023)
  • Significantly easier to carry: weighs 440 grams less (around 0.97 lbs)
  • Display has support for touch input
  • Provides 57% higher max. screen brightness: 550 vs 350 nits
  • Much smaller footprint: 18% more compact case (112.5 vs 137 square inches)
  • 24% sharper screen – 234 versus 189 pixels per inch (PPI)
Advantages of the Asus VivoBook Pro 16X 3D OLED (K6604, 2023)
  • Higher screen refresh rate: 165 versus 60 Hz
  • Can run popular games at about 105-143% higher FPS
  • Around 2.4x better multi-core CPU performance in the Cinebench R23 test
  • Includes an old-school USB-A port
  • Features a bigger (~29%) battery – 90 against 70 watt-hours
  • User-upgradable RAM (up to 64GB)

Value for money

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Tests and Specifications

Comparison table of test results and technical specs


Weight 1.56 kg (3.44 lbs) 2 kg (4.41 lbs)
Dimensions 321.8 x 225.6 x 16.9 mm
12.67 x 8.88 x 0.67 inches
355 x 249 x 22.9 mm
13.98 x 9.8 x 0.9 inches
Area 726 cm2 (112.5 inches2) 884 cm2 (137 inches2)
Screen-to-body ratio ~84% ~84%
Side bezels 4.8 mm 5.2 mm
Colors White, Gray Black, Silver
Material Aluminum Plastic
Transformer No No
Opening angle 180° 145°
Size comparison
Cooling solution
Cooling system Active Active
Vapor chamber No No
Liquid metal No No
Number of fans 1 3
Noise level (max. load) 45.5 dB 56.9 dB


Size 14.5 inches 16 inches
Refresh rate 60 Hz 165 Hz
PPI 234 ppi 189 ppi
Aspect ratio 16:10 16:10
Resolution 2880 x 1800 pixels 2560 x 1600 pixels
HDR support Yes, HDR10 Yes, Dolby Vision
Sync technology No No
Touchscreen Yes No
Coating Glossy Glossy
Ambient light sensor No Yes
Screen space comparison
VivoBook Pro 16X 3D OLED (K6604, 2023)
16″ (16:10 ratio) = 115.1 in2
Zenbook 14X OLED (UX3404, 2023)
14.5″ (16:10 ratio) = 94.5 in2
~21% more screen space
Display tests
Contrast 1000000:1 1000000:1
sRGB color space - 99.5%
DCI-P3 color gamut 100% -
Response time 1 ms 1 ms


Full charging time 2:00 hr 1:15 hr
Battery type Li-Ion Li-Po
Replaceable No No
Fast charging Yes Yes
USB Power Delivery Yes Yes
Charging port position Right Left, Right
Charge power 90 / 100 W 240 W
Weight of AC adapter 390 / 420 grams -


CPU name
Base frequency 2.6 GHz 2.2 GHz
Turbo frequency 4.7 GHz 5.6 GHz
Cores 12 (4P + 8E) 24 (8P + 16E)
Threads 16 32
L3 Cache 18 MB 36 MB
Integrated GPU Intel Iris Xe Graphics (80EU) Intel UHD Graphics (32EU)
Fabrication process 10 nm 10 nm


Graphics Card

GPU name
TGP 50 W 140 W
Nvidia Optimus Yes MUX
Type Dedicated Dedicated
Fabrication process 8 nm 4 nm
GPU base clock 1185 MHz -
GPU boost clock 1417 MHz -
Memory size 4 GB 8 GB
Memory type GDDR6 GDDR6
Memory bus 128 bit 128 bit
Memory speed 12 Gbps ~16 Gbps
Shading units (cores) 2048 3072
Texture mapping units (TMUs) 64 96
Raster operations pipelines (ROPs) 40 32
GPU performance


RAM size
Channels 2x8 GB 2x8 GB
Clock 4800 MHz 4800 MHz
Upgradable No Yes
Total slots - 2
Max. ram size - 64 GB


Storage size
Bus PCI-E Gen 4.0 (4x) PCI-E Gen 4.0 (4x)
Storage type SSD (M2) SSD (M2)
Channels 1x256 GB 1x512 GB
Upgradable Yes Yes
Total slots 1 1
NVMe Yes Yes


Speakers 2.0 2.0
Power 2x2W -
Dolby Atmos Yes Yes
Loudness ~86.4 dB ~87.4 dB
Microphones 2 2


Wi-Fi standard v6E v6E
Bluetooth v5.3 v5.3
Fingerprint No Yes
Infrared sensor Yes No
Optical drive No No
Webcam Above the display Above the display
Webcam resolution 1920 x 1080 1920 x 1080
USB-A 1x USB 3.2 2x USB 3.2
USB Type-C 2x USB 4.0 2x USB 4.0
Thunderbolt Thunderbolt 4 Thunderbolt 4
HDMI 1x HDMI 2.1 1x HDMI 2.1
DisplayPort No No
Audio jack (3.5 mm) Yes Yes
Ethernet (RJ45) No Yes
SD card reader No Yes
Proprietary charging port No Yes


Keyboard type Island Island
Numpad No Yes
Backlight Yes Yes
Key travel 1.4 mm 1.4 mm
Size 13.0 x 7.6 cm 13.0 x 8.0 cm
Surface Plastic Plastic
Windows Precision Yes Yes
Further details
Notes on Zenbook 14X OLED (UX3404, 2023):
    - Includes USB-A to RJ45 gigabit ethernet adapter in the box.
*Disclaimer! Ports, speakers, display, and other specifications can vary depending on the laptop's specific configuration or region.

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