Side by side comparison and review of Microsoft Surface Pro X and Lenovo ThinkPad T440s. 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.
| DESIGN AND DIMENSIONS | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Product Type | Tablet - no keyboard | Ultrabook |
|---|---|---|
| Dimensions (WxDxH) | 28.7 cm x 20.8 cm x 0.73 cm | 33.1 cm x 22.6 cm x 2.065 cm |
| Weight | 774 g | 1.59 kg |
| Case Material | Anodised aluminium | Polycarbonate ABS |
| Colour | Platinum | Matte black | - |
| DISPLAY | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Screen Size (Type) | 13" | 14" - IPS |
|---|---|---|
| Touchscreen | Yes (10-point multi-touch) | - |
| LCD Backlight Technology | - | LED backlight |
| Screen Resolution | 2880 x 1920 | 1600 x 900 (HD+) |
| Pixel Density (ppi) | 267 | - |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 3:2 | 16:9 |
| Image Brightness | 450 cd/m² | - |
| Features | PixelSense | Anti-glare |
| PROCESSOR | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| CPU | Microsoft SQ1 3 GHz | Intel Core i5 (4th Gen) 4300U / 1.9 GHz |
|---|---|---|
| Max Turbo Speed | - | 2.9 GHz |
| Number of Cores | - | Dual-Core |
| Cache | - | 3 MB |
| 64-bit Computing | - | Yes |
| Features | - | Integrated memory controller |
| MEMORY | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| RAM | 8 GB | 4 GB |
|---|---|---|
| Max RAM Supported | - | 12 GB |
| RAM Type | LPDDR4X SDRAM | DDR3L SDRAM |
| Speed | - | 1600 MHz |
| Form Factor | - | SO-DIMM 204-pin |
| STORAGE | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD | 120 GB SSD |
|---|
| AUDIO & VIDEO | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Graphics Processor (GPU) | Qualcomm Adreno 685 | Intel HD Graphics 4400 |
|---|---|---|
| Camera | Yes - 4K (rear), 1080p (front) | Yes - 720p |
| Resolution | 10 Megapixel (rear), 5 Megapixel (front) | - |
| Camera Features | Autofocus, Windows Hello | Face tracking |
| Sound | Stereo speakers, two microphones | Stereo speakers, dual array microphone |
| Codec | - | Realtek ALC3232 |
| Compliant Standards | Dolby Audio Premium | High Definition Audio, Dolby Home Theater v4 |
| COMMUNICATIONS | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | - |
|---|---|---|
| Network Interface | - | Gigabit Ethernet |
| Compliant Standards | IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, Wi-Fi CERTIFIED, IEEE 802.11n, IEEE 802.11ac, Bluetooth 5.0 | - |
| WWAN |
|---|
| Generation | 4G | - |
|---|---|---|
| Technology | LTE Advanced Pro | - |
| BATTERY | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Technology | - | 3-cell Lithium Ion |
|---|---|---|
| Installed Qty | - | 2 |
| Max Supported Qty | - | 2 |
| Battery Life | Up to 15 hours | - |
| AC ADAPTER | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Input | - | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 45 Watt |
| INPUT | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Type | - | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Features | - | Spill-resistant, multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Slots | 1 x Nano-SIM card (1 free) | - |
|---|---|---|
| Interfaces | 2 x USB-C Keyboard SurfaceConnect |
2 x USB 3.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack USB 3.0 (Always On) |
| Memory Card Reader | - | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Operating System (OS) | Windows 10 Pro | Windows 10 Pro 64-bit Edition (Microsoft Authorized Refurbisher (MAR)) |
|---|---|---|
| Software Included | Microsoft 365 Business Standard, Business Premium or Microsoft 365 Apps (30 days trial), Microsoft 365 Apps (requires licence or subscription) | - |
| MISCELLANEOUS | Microsoft Surface Pro X | Lenovo ThinkPad T440s |
|---|
| Dockable | Yes | Yes |
|---|---|---|
| Included Accessories | Power adapter | Power adapter |
| Integrated Options | Accelerometer, ambient light sensor, magnetometer, gyro sensor | - |
| Security | Firmware Trusted Platform Module (TPM) Security Chip | Trusted Platform Module (TPM 1.2) 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, MIL-STD-810G tested |
| Navigation Receiver | GPS/GLONASS | - |
| Compliant Standards | - | ISO 9001, ISO 14001, WEEE, ISO 27001 |
| SAR Value | 1.498 W/kg (body) | - |
| ENERGY STAR Certified | - | Yes |
| Manufacturer Warranty | Limited warranty - 1 year | Limited warranty - 2 years - pick-up and return |
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