Side by side comparison and review of Lenovo ThinkPad T440 and Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ). 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 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outdated design style
| DESIGN AND DIMENSIONS | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Product Type | Ultrabook | Tablet - with detachable keyboard |
|---|---|---|
| Dimensions (WxDxH) | 33.9 cm x 23.25 cm x 2.1 cm | - |
| Dimensions (WxDxH) - tablet | - | 30.41 cm x 22.6 cm x 0.89 cm |
| Dimensions (WxDxH) / Weight Details | - | 30.41 cm x 22.6 cm x 0.89 cm / 890 g - tablet 30.41 cm x 22.6 cm x 1.51 cm / 1.27 kg - tablet with keyboard |
| Weight | 1.81 kg | 890 g |
| Case Material | - | Aluminum, magnesium alloy |
| Colour | - | Black |
| DISPLAY | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Screen Size (Type) | 14" | 13" - IPS |
|---|---|---|
| Touchscreen | - | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1600 x 900 (HD+) | 3000 x 2000 (QHD+) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 3:2 |
| Image Brightness | - | 400 cd/m² |
| Features | - | Glossy, Corning Gorilla glass, WideView, anti-fingerprint |
| PROCESSOR | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| CPU | Intel Core i5 (4th Gen) 4300U / 1.9 GHz | Intel Core i5 (8th Gen) 8250U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 2.9 GHz | 3.4 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | 6 MB |
| 64-bit Computing | Yes | Yes |
| Features | Hyper-Threading Technology, integrated memory controller, Intel Turbo Boost Technology 2.0 | Integrated memory controller |
| MEMORY | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| RAM | 4 GB (1 x 4 GB) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 8 GB | - |
| RAM Type | DDR3L SDRAM | LPDDR3 SDRAM |
| Speed | - | 1866 MHz |
| Rated Speed | - | 2133 MHz |
| Form Factor | SO-DIMM 204-pin | - |
| Slots Qty | 1 | - |
| Empty Slots | 0 | - |
| STORAGE | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Main Storage Size (HDD/SSD) | 240 GB SSD | 256 GB SSD M.2 PCIe - TCG Opal Encryption 2, NVM Express (NVMe) - Samsung |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4400 | Intel UHD Graphics 620 |
|---|---|---|
| Camera | Yes | Yes |
| Resolution | - | 8 Megapixel (rear), 2 Megapixel (front) |
| Camera Features | - | IR camera, rear camera with auto focus, rear camera with flash |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, two microphones |
| Codec | Realtek ALC3232 | Realtek ALC3278 |
| COMMUNICATIONS | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Wireless | - | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | - | Intel Dual Band Wireless-AC 8265 - M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| WWAN |
|---|
| Generation | - | 4G |
|---|---|---|
| Technology | - | UMTS, HSPA, HSPA+, DC-HSPA+, LTE Advanced |
| Controller | - | Sierra Wireless EM7455 |
| BATTERY | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Technology | - | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | - | 42 Wh |
| Battery Life | - | Up to 9.5 hours |
| AC ADAPTER | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Input | - | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | - | 65 Watt |
| INPUT | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, digitizer, TrackPoint, digital pen, UltraNav |
|---|---|---|
| Keyboard Backlight | - | Yes |
| Features | Multi-touch touchpad | Volume control, multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Slots | - | 1 x Nano-SIM card (1 free) |
|---|---|---|
| Interfaces | 2 x USB 3.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack |
2 x USB-C 3.1 Gen 1 (Power Delivery 3.0) Pogo keyboard connector Headphone/microphone combo jack |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | Yes (microSD, microSDHC, microSDXC) |
| SOFTWARE | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Operating System (OS) | Windows 10 Pro (Microsoft Authorized Refurbisher (MAR)) | Windows 10 Pro 64-bit Edition |
|---|
| MISCELLANEOUS | Lenovo ThinkPad T440 | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Dockable | Yes | Yes |
|---|---|---|
| Included Accessories | Power adapter | Keyboard, ThinkPad Pen Pro, USB-C power adapter, pen holder |
| Integrated Options | - | Ambient light sensor, 3-axis gyro sensor, 3-axis accelerometer, 3-axis compass |
| Security | Trusted Platform Module (TPM 1.2) Security Chip | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington security slot | Kensington mini security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | - | Reset switch, MIL-STD-810G tested |
| Navigation Receiver | - | GPS |
| Compliant Standards | ISO 9001, ISO 14001, ISO 27001 | RoHS, GREENGUARD, low halogen |
| SAR Value | - | 1.51 W/kg (body), 1.51 W/kg (limb) |
| Manufacturer Warranty | Limited warranty - 2 years - pick-up and return | Limited warranty - 3 years - pick-up and return Limited warranty - battery - 1 year |
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