In depth comparison and review of Lenovo ThinkPad T440 and ASUS VivoBook 15 (X512DA). 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 Lenovo ThinkPad T440 based on its technical characteristics, features, user experience, expert reviews and price level.
durable build quality
excellent keyboard comfort
good battery life
solid performance base
efficient thermal management
average display quality
heavier than competitors
limited graphics capability
outdated design style
Advantages and disadvantages of ASUS VivoBook 15 (X512DA) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
ample storage options
decent processor speed
lightweight design
solid build quality
average display quality
limited graphics performance
short battery life
no backlit keyboard
| DESIGN AND DIMENSIONS | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Product Type | Ultrabook | Ultrabook |
|---|---|---|
| Dimensions (WxDxH) | 33.9 cm x 23.25 cm x 2.1 cm | 35.72 cm x 23.04 cm x 1.99 cm |
| Weight | 1.81 kg | 1.7 kg |
| Colour | - | Slate grey |
| DISPLAY | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Screen Size (Type) | 14" | 15.6" |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1600 x 900 (HD+) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | - |
| Colour Gamut | - | 45% NTSC |
| Features | - | Anti-glare, NanoEdge display |
| PROCESSOR | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| CPU | Intel Core i5 (4th Gen) 4300U / 1.9 GHz | AMD Ryzen 5 3500U / 2.1 GHz |
|---|---|---|
| Max Turbo Speed | 2.9 GHz | 3.7 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | - |
| 64-bit Computing | Yes | - |
| Features | Hyper-Threading Technology, integrated memory controller, Intel Turbo Boost Technology 2.0 | - |
| MEMORY | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| RAM | 4 GB (1 x 4 GB) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 8 GB | - |
| RAM Type | DDR3L SDRAM | DDR4 SDRAM |
| Form Factor | SO-DIMM 204-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 1 |
| Empty Slots | 0 | 0 |
| STORAGE | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Main Storage Size (HDD/SSD) | 240 GB SSD | 256 GB SSD M.2 |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4400 | AMD Radeon Vega 8 |
|---|---|---|
| Camera | Yes | Yes - HD |
| Sound | Stereo speakers, dual array microphone | - |
| Codec | Realtek ALC3232 | - |
| COMMUNICATIONS | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Wireless | - | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Network Interface | Gigabit Ethernet | - |
| BATTERY | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Technology | - | 2-cell |
|---|---|---|
| Battery Capacity (Size) | - | 37 Wh |
| AC ADAPTER | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Output | - | 45 Watt, 19 V, 2.37 A |
|---|
| INPUT | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Features | Multi-touch touchpad | - |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Interfaces | 2 x USB 3.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack |
Headphone/microphone combo jack USB 3.1 Gen 1 2 x USB 2.0 USB-C 3.1 Gen 1 HDMI |
|---|---|---|
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | Yes (microSD) |
| SOFTWARE | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Operating System (OS) | Windows 10 Pro (Microsoft Authorized Refurbisher (MAR)) | Windows 10 Home |
|---|
| MISCELLANEOUS | Lenovo ThinkPad T440 | ASUS VivoBook 15 (X512DA) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | Power adapter |
| Security | Trusted Platform Module (TPM 1.2) Security Chip | - |
| Security Slot Type | Kensington security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Compliant Standards | ISO 9001, ISO 14001, ISO 27001 | - |
| SAR Value | - | 0.464 W/kg (body), 0.464 W/kg (limb) |
| Manufacturer Warranty | Limited warranty - 2 years - pick-up and return | - |
| Model Number | - | EJ254T |
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