In depth comparison and review of ASUS ZenBook S UX391UA (ET087T) and ASUS ROG Strix SCAR II GL504GS (ES121T). 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 ZenBook S UX391UA (ET087T) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
decent processor performance
ample storage capacity
good keyboard layout
average display quality
no backlit keyboard
limited graphics performance
mediocre battery life
Advantages and disadvantages of ASUS ROG Strix SCAR II GL504GS (ES121T) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful gaming performance
high refresh rate display
RGB keyboard lighting
robust build quality
effective cooling system
heavy and bulky
short battery life
loud under load
expensive price point
| DESIGN AND DIMENSIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 31.1 cm x 21.3 cm x 1.29 cm | 36.1 cm x 26.2 cm x 2.61 cm |
| Weight | 1 kg | 2.4 kg |
| Colour | Deep dive blue | Gun metal |
| DISPLAY | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Screen Size (Type) | 13.3" | 15.6" |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| V-Sync Rate at Max Res. | - | 144 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 300 cd/m² | 300 cd/m² |
| Colour Gamut | 72% NTSC | 100% sRGB, 72% NTSC, 75.35% Adobe RGB |
| Features | Ultra Slim Design, anti-glare, WideView, 178° horizontal and vertical viewing angle | Anti-glare, 3 ms response rate |
| PROCESSOR | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| CPU | Intel Core i7 (8th Gen) 8550U / 1.8 GHz | Intel Core i7 (8th Gen) 8750H / 2.2 GHz |
|---|---|---|
| Max Turbo Speed | 4 GHz | 4.1 GHz |
| Number of Cores | Quad-Core | 6-core |
| Cache | 8 MB | - |
| 64-bit Computing | Yes | Yes |
| Chipset | - | Mobile Intel HM370 |
| Features | Intel Turbo Boost Technology 2.0 | Intel Turbo Boost Technology 2.0 |
| MEMORY | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| RAM | 8 GB (provided memory is soldered) | 16 GB (1 x 16 GB) |
|---|---|---|
| Max RAM Supported | - | 32 GB |
| RAM Type | LPDDR3 SDRAM | DDR4 SDRAM |
| Speed | 2133 MHz | 2666 MHz |
| Rated Speed | 2133 MHz | - |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 2 |
| Empty Slots | - | 1 |
| STORAGE | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 SATA 6Gb/s | 256 GB SSD M.2 PCIe - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | NVIDIA GeForce GTX 1070 |
|---|---|---|
| Video Memory | - | 8 GB GDDR5 SDRAM |
| Gaming | - | Yes |
| Camera | Yes - HD | Yes - 720p |
| Image Sensor Type | - | CMOS |
| Sound | Harman/kardon stereo speakers, array microphone | Stereo speakers, array microphone |
| Audio Features | ASUS SonicMaster | Smart Amplification technology |
| VR Ready | - | Yes |
| COMMUNICATIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac, Bluetooth 5.0 |
|---|---|---|
| Network Interface | - | Gigabit Ethernet |
| BATTERY | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Technology | 4-cell | 4-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 50 Wh | 66 Wh |
| Battery Life | Up to 13.5 hours | - |
| AC ADAPTER | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50 - 60 Hz) |
|---|---|---|
| Output | 65 Watt, 20 V | 230 Watt, 19.5 V, 11.8 A |
| INPUT | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | - | 4 RGB zones |
| CONNECTIONS & EXPANSIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Interfaces | Headphone/microphone combo jack USB-C 3.1 Gen 1 (Power Delivery/data/video) 2 x USB-C 3.1 Gen 2 (supports Thunderbolt 3) (Power Delivery/data/video) |
Headphone/microphone combo jack Mini DisplayPort HDMI 3 x USB 3.1 Gen 1 LAN USB-C Gen 2 |
|---|---|---|
| Memory Card Reader | - | Yes (SD Card) |
| SOFTWARE | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Operating System (OS) | Windows 10 Home | Windows 10 Home 64-bit Edition |
|---|
| MISCELLANEOUS | ASUS ZenBook S UX391UA (ET087T) | ASUS ROG Strix SCAR II GL504GS (ES121T) |
|---|
| Included Accessories | USB-C power adapter | Power adapter, ROG Strix stickers, ROG keychain, palm rest label |
|---|---|---|
| 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, hard drive password |
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