In depth comparison and review of ASUS ROG Zephyrus G15 (GA503RM) and ASUS R521JA (EJ974T). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
Advantages and disadvantages of ASUS ROG Zephyrus G15 (GA503RM) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful gaming performance
high refresh rate display
lightweight, portable design
efficient cooling system
good battery life
high price point
no webcam included
limited port selection
average speaker quality
Advantages and disadvantages of ASUS R521JA (EJ974T) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
lightweight design
decent battery life
adequate performance
average display quality
limited storage capacity
no backlit keyboard
basic graphics card
| DESIGN AND DIMENSIONS | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.5 cm x 24.3 cm x 1.99 cm | 36 cm x 23.5 cm x 2.29 cm |
| Weight | 1.9 kg | 1.9 kg |
| Colour | Moonlight white | Transparent silver |
| DISPLAY | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Screen Size (Type) | 15.6" | 15.6" |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 2560 x 1440 (WQHD) | 1920 x 1080 (Full HD) |
| V-Sync Rate at Max Res. | 165 Hz | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | - | 200 cd/m² |
| Colour Gamut | 100% DCI-P3 | 45% NTSC |
| Features | Anti-glare, FreeSync Technology, 3 ms response rate, Pantone Validated, IPS-level | Anti-glare, 83% screen-to-body ratio |
| PROCESSOR | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| CPU | AMD Ryzen 9 6900HS / 3.3 GHz | Intel Core i5 (10th Gen) 1035G1 / 1 GHz |
|---|---|---|
| Max Turbo Speed | 4.9 GHz | 3.6 GHz |
| Number of Cores | 8-core | Quad-Core |
| Cache | L3 - 16 MB | 6 MB |
| MEMORY | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| RAM | 16 GB (1 x 8 GB + 8 GB (soldered)) | 4 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 40 GB | - |
| RAM Type | DDR5 SDRAM | DDR4 SDRAM |
| Speed | 4800 MHz | - |
| Form Factor | SO-DIMM 262-pin | - |
| Slots Qty | 1 | - |
| Empty Slots | 0 | - |
| STORAGE | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Main Storage Size (HDD/SSD) | 1 TB SSD M.2 PCIe 4.0 - NVM Express (NVMe) | 512 GB SSD M.2 PCIe 3.0 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA GeForce RTX 3060 / AMD Radeon 680M | Intel UHD Graphics |
| Video Memory | 8 GB GDDR6 SDRAM | - |
| Video System Features | NVIDIA Optimus, ROG Boost, Dynamic Boost | - |
| Gaming | Yes | - |
| Camera | Yes - 720p | Yes - VGA |
| Camera Features | IR camera, Windows Hello | - |
| Sound | Two tweeters, two woofers, array microphone | Speaker, microphone |
| Compliant Standards | Dolby Atmos | - |
| Audio Features | Noise-cancellation technology, Smart Amp | Output: ASUS SonicMaster |
| COMMUNICATIONS | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Wireless | Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Network Interface | Gigabit Ethernet | - |
| Features | Dual stream (2x2) | Single stream (1x1) |
| BATTERY | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Technology | 4-cell Lithium Ion | 2-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 90 Wh | 32 Wh |
| AC ADAPTER | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 240 Watt, 20 V, 12 A | 45 Watt, 19 V, 2.37 A |
| INPUT | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes (RGB) | - |
| Features | Chiclet keyboard | Chiclet keyboard |
| CONNECTIONS & EXPANSIONS | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| 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 3.2 Gen 1 USB-C 3.2 Gen 1 2 x USB 2.0 HDMI Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (microSD, microSDXC UHS-II) | Yes (microSD) |
| SOFTWARE | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Operating System (OS) | Windows 11 Home | Windows 10 Home |
|---|
| MISCELLANEOUS | ASUS ROG Zephyrus G15 (GA503RM) | ASUS R521JA (EJ974T) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | - | Firmware Trusted Platform Module (TPM) Security Chip |
| Security Slot Type | Kensington security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Features | System password, ErgoLift | - |
| Model Number | HQ007W | - |
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