Side by side comparison and review of Lenovo ThinkPad X1 Carbon (1st Gen) 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.
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Product Type | Ultrabook | Tablet - with detachable keyboard |
|---|---|---|
| Dimensions (WxDxH) | 33.1 cm x 22.6 cm x 1.88 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 | 1.36 kg | 890 g |
| Case Material | Carbon fibre, magnesium-aluminum alloy | Aluminum, magnesium alloy |
| Colour | - | Black |
| DISPLAY | Lenovo ThinkPad X1 Carbon (1st Gen) | 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 | 1366 x 768 (HD) | 3000 x 2000 (QHD+) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 3:2 |
| Image Brightness | - | 400 cd/m² |
| Features | Premium | Glossy, Corning Gorilla glass, WideView, anti-fingerprint |
| PROCESSOR | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| CPU | Intel Core i5 (3rd Gen) 3427U / 1.8 GHz | Intel Core i5 (8th Gen) 8250U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 2.8 GHz | 3.4 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | 6 MB |
| 64-bit Computing | Yes | Yes |
| Chipset | Mobile Intel QS77 Express | - |
| Platform Technology | Intel vPro Platform | - |
| Features | Hyper-Threading Technology, integrated memory controller, Intel Turbo Boost Technology 2.0, Intel Smart Cache | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| RAM | 4 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | DDR3L SDRAM | LPDDR3 SDRAM |
| Speed | 1333 MHz / PC3L-10600 | 1866 MHz |
| Rated Speed | 1333 MHz | 2133 MHz |
| Form Factor | Integrated | - |
| STORAGE | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD SATA 6Gb/s | 256 GB SSD M.2 PCIe - TCG Opal Encryption 2, NVM Express (NVMe) - Samsung |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4000 | Intel UHD Graphics 620 |
|---|---|---|
| Camera | Yes | Yes |
| Resolution | - | 8 Megapixel (rear), 2 Megapixel (front) |
| Camera Features | Face tracking | IR camera, rear camera with auto focus, rear camera with flash |
| Video Resolutions | 1280 x 720 | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, two microphones |
| Codec | Realtek ALC3202 | Realtek ALC3278 |
| Compliant Standards | High Definition Audio, Dolby Home Theater v4 | - |
| COMMUNICATIONS | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Wireless | 802.11a/b/g/n, Bluetooth 4.0 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | Intel Centrino Advanced-N 6205S - PCI Express Mini Card | Intel Dual Band Wireless-AC 8265 - M.2 Card |
| WWAN |
|---|
| Generation | 3G | 4G |
|---|---|---|
| Technology | GPRS, WCDMA, HSPA, HSPA+ | UMTS, HSPA, HSPA+, DC-HSPA+, LTE Advanced |
| Controller | Ericsson H5321gw - PCI Express Mini Card | Sierra Wireless EM7455 |
| Max Transfer Rate | 21 Mbps | - |
| BATTERY | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Technology | 4-cell lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 45.8 Wh | 42 Wh |
| Battery Life | Up to 8.2 hours | Up to 9.5 hours |
| AC ADAPTER | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 90 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, digitizer, TrackPoint, digital pen, UltraNav |
|---|---|---|
| Keyboard Backlight | - | Yes |
| Features | Volume control, spill-resistant, multi-touch touchpad, buttonless touchpad | Volume control, multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Slots | - | 1 x Nano-SIM card (1 free) |
|---|---|---|
| Interfaces | USB 3.0 PoweredUSB 2.0 Mini DisplayPort 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 X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Operating System (OS) | Windows 8 64-bit Edition | Windows 10 Pro 64-bit Edition |
|---|
| MISCELLANEOUS | Lenovo ThinkPad X1 Carbon (1st Gen) | Lenovo ThinkPad X1 Tablet (3rd Gen) (20KJ) |
|---|
| Dockable | - | 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, fingerprint reader | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | - | Kensington mini security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | Administrator password, hard drive password, power-on password, ThinkPad Roll Cage, Intel Active Management Technology (iAMT), RapidCharge | Reset switch, MIL-STD-810G tested |
| Navigation Receiver | GPS | GPS |
| Compliant Standards | RoHS | RoHS, GREENGUARD, low halogen |
| SAR Value | - | 1.51 W/kg (body), 1.51 W/kg (limb) |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Gold | - |
| Manufacturer Warranty | Limited warranty - 3 years - pick-up and return | Limited warranty - 3 years - pick-up and return Limited warranty - battery - 1 year |
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