ASUS ROG Zephyrus G15 (GA503RX) vs. ASUS ROG Zephyrus Duo 15 (GX550LXS)

Laptop Comparison, Reviews and Tests

Detailed comparison and review of ASUS ROG Zephyrus G15 (GA503RX) and ASUS ROG Zephyrus Duo 15 (GX550LXS). With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.

Laptop Specifications Comparison

ASUS ROG Zephyrus G15 (GA503RX) vs. ASUS ROG Zephyrus Duo 15 (GX550LXS) Comparison Chart
DESIGN AND DIMENSIONS ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Product Type Notebook Notebook
Dimensions (WxDxH) 35.5 cm x 24.3 cm x 1.99 cm 36 cm x 26.8 cm x 2 cm
Weight 1.9 kg 2.48 kg
Colour Moonlight white Gunmetal gray
DISPLAY ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Screen Size (Type) 15.6" 15.6"
LCD Backlight Technology LED backlight LED backlight
Screen Resolution 2560 x 1440 (WQHD) 3840 x 2160 (Ultra HD 4K)
V-Sync Rate at Max Res. 240 Hz 60 Hz
Widescreen Yes Yes
Image Aspect Ratio 16:9 16:9
Image Brightness - 400 cd/m²
Colour Gamut 100% DCI-P3 100% Adobe RGB, 132.7% sRGB, 95.54% NTSC
Features Anti-glare, FreeSync Technology, 3 ms response rate, Pantone Validated, IPS-level Anti-glare, NVIDIA G-SYNC compatible, Pantone Validated
PROCESSOR ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
CPU AMD Ryzen 9 6900HS / 3.3 GHz Intel Core i9 (10th Gen) 10980HK / 2.4 GHz
Max Turbo Speed 4.9 GHz 5.3 GHz
Number of Cores 8-core 8-core
Cache L3 - 16 MB 16 MB
64-bit Computing - Yes
Chipset - Intel HM470
Features - Intel Turbo Boost Max Technology 3.0
MEMORY ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
RAM 32 GB (1 x 16 GB + 16 GB (soldered)) 32 GB (1 x 16 GB + 16 GB (soldered))
Max RAM Supported 48 GB 48 GB
RAM Type DDR5 SDRAM DDR4 SDRAM
Speed 4800 MHz 3200 MHz
Form Factor SO-DIMM 262-pin SO-DIMM 260-pin
Slots Qty 1 1
Empty Slots 0 0
STORAGE ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Total Capacity - 2 TB
Main Storage Size (HDD/SSD) 1 TB SSD M.2 PCIe 4.0 - NVM Express (NVMe) 2 x 1 TB SSD M.2 PCIe - NVM Express (NVMe), HyperDrive RAID 0
RAID Level - RAID 0
AUDIO & VIDEO ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Multi-GPU Configuration 1 single GPU card / integrated GPU 1 single GPU card / integrated GPU
Graphics Processor (GPU) NVIDIA GeForce RTX 3080 Ti / AMD Radeon 680M NVIDIA GeForce RTX 2080 SUPER / Intel UHD Graphics
Video Memory 16 GB GDDR6 SDRAM 8 GB GDDR6 SDRAM
Video System Features NVIDIA Optimus, ROG Boost, Dynamic Boost NVIDIA Optimus, Max-Q design
Gaming Yes Yes
Camera Yes - 720p -
Camera Features IR camera, Windows Hello -
Sound Two tweeters, two woofers, array microphone Stereo speakers, array microphone
Compliant Standards Dolby Atmos -
Audio Features Noise-cancellation technology, Smart Amp ESS SABRE HiFi audio DAC technology, Smart Amp
VR Ready - Yes
COMMUNICATIONS ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Wireless Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) 802.11a/b/g/n/ac/ax, Bluetooth 5.1
Network Interface Gigabit Ethernet Gigabit Ethernet
Compliant Standards - Wi-Fi CERTIFIED 6
Features Dual stream (2x2) Dual stream (2x2)
BATTERY ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Technology 4-cell Lithium Ion 4-cell Lithium Ion
Battery Capacity (Size) 90 Wh 90 Wh
AC ADAPTER ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Input AC 100-240 V (50/60 Hz) AC 120/230 V (50/60 Hz)
Output 240 Watt, 20 V, 12 A 240 Watt, 20 V, 12 A
INPUT ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Type Keyboard, touchpad Keyboard, touchpad, NumberPad
Keyboard Backlight Yes (RGB) Yes (RGB)
Features Chiclet keyboard Chiclet keyboard, per-key RGB
CONNECTIONS & EXPANSIONS ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Interfaces Headphone/microphone combo jack
2 x USB-C 3.2 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery)
2 x USB 3.2 Gen 2
HDMI
LAN
USB-C 3.2 Gen 2 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery)
USB 3.2 Gen 2
2 x USB 3.2 Gen 1
HDMI
LAN
Headphone/microphone combo jack
Microphone input
Memory Card Reader Yes (microSD, microSDXC UHS-II) -
SOFTWARE ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Operating System (OS) Windows 11 Home Windows 10 Pro
MISCELLANEOUS ASUS ROG Zephyrus G15 (GA503RX) ASUS ROG Zephyrus Duo 15 (GX550LXS)
Included Accessories Power adapter Power adapter
Security Slot Type Kensington security slot -
Theft/Intrusion Protection Security lock slot (cable lock sold separately) -
Features System password, ErgoLift System password, ASUS Aura Sync technology, Active Aerodynamic System (AAS), 65W power delivery
SAR Value - 0.028 W/kg (body), 0.028 W/kg (limb)
Model Number LN006W HC029R
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