In depth comparison and review of Lenovo ThinkPad X240 (20AM) and ASUS Zenbook 15 OLED (UM3504DA). 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 15 OLED (UM3504DA) based on its technical characteristics, features, user experience, expert reviews and price level.
vibrant oled display
lightweight and portable
powerful ryzen processor
ample storage options
good battery life
limited port selection
no dedicated gpu
higher price segment
average speaker quality
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 30.55 cm x 20.85 cm x 1.99 cm | 35.38 cm x 22.66 cm x 1.58 cm |
| Dimensions (WxDxH) / Weight Details | - | 45.5 cm x 29 cm x 7.3 cm / 3.67 kg |
| Weight | 1.47 kg | 1.4 kg |
| Case Material | Glass-fibre reinforced plastic | Aluminum |
| Colour | - | Ponder blue |
| DISPLAY | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Screen Size (Type) | 12.5" | 15.6" OLED |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1366 x 768 (HD) | 2880 x 1620 (2.8K) |
| V-Sync Rate at Max Res. | - | 120 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | - | 600 cd/m² |
| Colour Gamut | - | 100% DCI-P3 |
| Colour Support | - | 1.07 billion colours |
| Features | Anti-glare | NanoEdge display, Pantone Validated, 86% screen-to-body ratio, 0.2 ms response rate, HDR 600 True Black, VESA DisplayHDR |
| PROCESSOR | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| CPU | Intel Core i3 (4th Gen) 4010U / 1.7 GHz | AMD Ryzen 7 7735U / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | - | 4.75 GHz |
| Number of Cores | Dual-Core | 8-core |
| Cache | 3 MB | L3 - 16 MB |
| 64-bit Computing | Yes | - |
| Features | Integrated memory controller | - |
| MEMORY | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| RAM | 2 GB (1 x 2 GB) | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 8 GB | - |
| RAM Type | DDR3L SDRAM | LPDDR5 SDRAM |
| Speed | 1600 MHz / PC3L-12800 | - |
| Rated Speed | 1600 MHz | - |
| Form Factor | SO-DIMM 204-pin | - |
| Slots Qty | 1 | - |
| Empty Slots | 0 | - |
| STORAGE | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 6Gb/s / 7200 rpm | 512 GB SSD M.2 PCIe 4.0 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4400 | AMD Radeon 680M |
|---|---|---|
| Camera | Yes - 720p | Yes - Full HD |
| Camera Features | Face tracking | IR camera, Windows Hello, ASUS AiSense Camera |
| Sound | Stereo speakers, two microphones | Harman/kardon stereo speakers, array microphone |
| Codec | Realtek ALC3232 | - |
| Compliant Standards | High Definition Audio, Dolby Advanced Audio v2 | Dolby Atmos |
| Audio Features | - | Output: Smart Amplification technology, Asus Audio Booster; Input: AI noise cancelling |
| COMMUNICATIONS | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Wireless | 802.11b/g/n, Bluetooth 4.0 | 802.11a/b/g/n/ac/ax (Wi-Fi 6E), Bluetooth 5.3 |
|---|---|---|
| Wireless Controller | M.2 Card | - |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Intel I218-V | - |
| Features | - | Single stream (1x1) |
| WWAN |
|---|
| Generation | WWAN | - |
|---|
| BATTERY | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Technology | 6-cell Lithium Ion | 4-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 47 Wh | 67 Wh |
| AC ADAPTER | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt | 65 Watt, 20 V, 3.25 A |
| INPUT | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad | Spill-resistant, chiclet keyboard, 1.4mm travel distance, ASUS ErgoSense |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Interfaces | 2 x USB 3.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack |
HDMI 2.1 Headphone/microphone combo jack USB-C 4.0 Gen 3/DisplayPort (Power Delivery) USB-C 3.2 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery) USB 3.2 Gen 1 |
|---|---|---|
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | - |
| SOFTWARE | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition - French | Windows 11 Home |
|---|---|---|
| Software Included | - | MyASUS, ScreenXpert, GlideX |
| MISCELLANEOUS | Lenovo ThinkPad X240 (20AM) | ASUS Zenbook 15 OLED (UM3504DA) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | USB-C power adapter |
| Security | Trusted Platform Module (TPM 1.2) Security Chip | Trusted Platform Module (TPM 2.0) Security Chip |
| Security Slot Type | Kensington security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Features | Administrator password, hard drive password, power-on password, ThinkVantage Active Protection System, 1 USB 3.0 (Always On), MIL-STD-810G tested | MIL-STD-810H tested, Cortana support, ASUS Antimicrobial Guard Plus |
| Compliant Standards | RoHS, GREENGUARD | RoHS, REACH, ISO 22196, TUV Rheinland Low Blue Light Certification, TUV Rheinland Flicker Free Certification, SGS Eye Care Display Certification, ISO 21702 |
| ENERGY STAR Certified | Yes | - |
| Max Operating Temperature | - | 49 °C |
| Min Operating Temperature | - | -37 °C |
| Humidity Range Operating | - | 95% RH |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | - |
| Model Number | - | NX015W |
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