Side by side comparison and review of ASUS ROG Zephyrus M16 (GU603ZM) and ASUS R521JA (EJ974T). Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.
Advantages and disadvantages of ASUS ROG Zephyrus M16 (GU603ZM) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful gaming performance
high-resolution display
sleek, lightweight design
good thermal management
versatile connectivity options
expensive price point
average battery life
limited upgradeability
noisy under load
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 M16 (GU603ZM) | 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 | Off black | Transparent silver |
| DISPLAY | ASUS ROG Zephyrus M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Screen Size (Type) | 16" | 15.6" |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 2560 x 1600 (WQXGA) | 1920 x 1080 (Full HD) |
| V-Sync Rate at Max Res. | 165 Hz | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:9 |
| Image Brightness | - | 200 cd/m² |
| Colour Gamut | 100% DCI-P3 | 45% NTSC |
| Features | Anti-glare, Adaptive-Sync technology, 3 ms response rate, Pantone Validated, IPS-level, Dolby Vision | Anti-glare, 83% screen-to-body ratio |
| PROCESSOR | ASUS ROG Zephyrus M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| CPU | Intel Core i7 (12th Gen) 12700H / 2.3 GHz | Intel Core i5 (10th Gen) 1035G1 / 1 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 3.6 GHz |
| Number of Cores | 14-core | Quad-Core |
| Cache | 24 MB | 6 MB |
| Features | Intel Smart Cache | - |
| MEMORY | ASUS ROG Zephyrus M16 (GU603ZM) | 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 M16 (GU603ZM) | 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 M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA GeForce RTX 3060 / Intel Iris Xe Graphics | Intel UHD Graphics |
| Video Memory | 6 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 Amplification technology | Output: ASUS SonicMaster |
| COMMUNICATIONS | ASUS ROG Zephyrus M16 (GU603ZM) | 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 | 2.5 Gigabit Ethernet | - |
| Features | Dual stream (2x2) | Single stream (1x1) |
| BATTERY | ASUS ROG Zephyrus M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Technology | 4-cell Lithium Ion | 2-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 90 Wh | 32 Wh |
| AC ADAPTER | ASUS ROG Zephyrus M16 (GU603ZM) | 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 M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | - |
| Features | Chiclet keyboard, ASUS Overstroke technologie, 1.7mm travel distance | Chiclet keyboard |
| CONNECTIONS & EXPANSIONS | ASUS ROG Zephyrus M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Interfaces | Thunderbolt 4 (supports DisplayPort) (Power Delivery) 2 x USB 3.2 Gen 2 USB-C 3.2 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery) HDMI LAN Headphone/microphone combo jack |
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 M16 (GU603ZM) | ASUS R521JA (EJ974T) |
|---|
| Operating System (OS) | Windows 11 Home | Windows 10 Home |
|---|
| MISCELLANEOUS | ASUS ROG Zephyrus M16 (GU603ZM) | 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 | - |
| Model Number | K8006W | - |
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