In depth comparison and review of Dell Latitude E6440 and Lenovo ThinkPad X1 Extreme (20MG). 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 X1 Extreme (20MG) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
excellent keyboard feel
high-resolution display
advanced security features
heavier than competitors
expensive price point
average battery life
limited color accuracy
| DESIGN AND DIMENSIONS | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 33.8 cm x 23.26 cm x 3.18 cm | 36.18 cm x 24.57 cm x 1.87 cm |
| Weight | 2.12 kg | 1.8 kg |
| Case Material | Anodised aluminium | Aluminum, glass-fibre reinforced plastic, carbon fibre reinforced plastic |
| Colour | Black, silver | Black | Black |
| DISPLAY | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Screen Size (Type) | 14" | 15.6" - IPS |
|---|---|---|
| Touchscreen | - | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1366 x 768 (HD) | 3840 x 2160 (Ultra HD 4K) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | - | 400 cd/m² |
| Colour Gamut | - | 100% |
| Features | Anti-glare, BFR/PVC-free | Anti-reflective, capacitive touch screen, 170° viewing angle, Dolby Vision |
| PROCESSOR | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| CPU | Intel Core i5 (4th Gen) 4300M / 2.6 GHz | Intel Core i7 (8th Gen) 8850H / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 3.3 GHz | 4.3 GHz |
| Number of Cores | Dual-Core | 6-core |
| Cache | 3 MB | 9 MB |
| 64-bit Computing | Yes | Yes |
| Chipset | Intel QM87 | Mobile Intel CM246 |
| Platform Technology | Intel vPro Platform | - |
| Features | Hyper-Threading Technology, Intel Turbo Boost Technology 2.0, Intel vPro Technology | Integrated memory controller |
| MEMORY | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| RAM | 4 GB (1 x 4 GB) | 16 GB (2 x 8 GB) |
|---|---|---|
| Max RAM Supported | 16 GB | 64 GB |
| RAM Type | DDR3L SDRAM | DDR4 SDRAM |
| Speed | 1600 MHz / PC3-12800 | 2666 MHz |
| Rated Speed | 1600 MHz | 2666 MHz |
| Form Factor | SO-DIMM 204-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 2 |
| Empty Slots | 1 | 0 |
| STORAGE | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Main Storage Size (HDD/SSD) | 320 GB HDD SATA 3Gb/s / 7200 rpm | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption, NVM Express (NVMe) - Samsung |
|---|---|---|
| Optical Drive | DVD±RW | - |
| Read Speed | 8x | - |
| AUDIO & VIDEO | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | Intel HD Graphics 4600 | NVIDIA GeForce GTX 1050 Ti / Intel UHD Graphics 630 |
| Video Memory | - | 4 GB GDDR5 SDRAM |
| Camera | Yes | Yes - 720p |
| Camera Features | 720p HD movie recording | IR camera, ThinkShutter camera privacy |
| Video Resolutions | 1280 x 720 | - |
| Sound | Stereo speakers, microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3226 | Realtek ALC3286 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Audio Premium, Dolby Atmos |
| Audio Features | MaxxAudio | - |
| COMMUNICATIONS | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Wireless | Bluetooth, 802.11b/g/n | 802.11a/b/g/n/ac, Bluetooth 5.0 |
|---|---|---|
| Wireless Controller | Intel Centrino Advanced-N 6235 | Intel Wireless-AC 9560 - M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Features | Intel Wireless Display (WiDi) | Gigabit Ethernet via optional Ethernet (RJ-45) adapter, dual stream (2x2) |
| BATTERY | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Technology | 6-cell Lithium Ion | 4-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 60 Wh | 80 Wh |
| Battery Life | - | Up to 14.9 hours |
| AC ADAPTER | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 19.5 V, 3.34 A | 135 Watt, 20 V |
| INPUT | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Type | Keyboard, touchpad, DualPoint | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| Features | Multi-touch touchpad | Spill-resistant, multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Interfaces | LAN 4 x USB 3.0 Headphone/microphone combo jack VGA HDMI Dock |
USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) 2 x USB-C 3.1 Gen 2 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) HDMI Headphone/microphone combo jack Lenovo Ethernet extension connector |
|---|---|---|
| Memory Card Reader | Yes (SD Card) | Yes (SD Card, SDHC Card, SDXC Card, SDXC UHS-II Card) |
| SOFTWARE | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition - English | Windows 10 Pro 64-bit Edition |
|---|---|---|
| Software Included | Dell Webcam Central | - |
| MISCELLANEOUS | Dell Latitude E6440 | Lenovo ThinkPad X1 Extreme (20MG) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | Power adapter |
| Integrated Options | Ambient light sensor | - |
| Security | Trusted Platform Module (TPM) Security Chip | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington security slot | Kensington security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | Noise reduction, powder coated, hot-swappable battery, Free Fall Sensor, ExpressCharge, Tri-metal chassis | Administrator password, hard drive password, power-on password, RapidCharge, MIL-STD-810G tested |
| Compliant Standards | FIPS 140-2, MIL-STD 810G | RoHS |
| SAR Value | - | 0.193 W/kg (body), 0.193 W/kg (limb) |
| ENERGY STAR Certified | Yes | Yes |
| Max Operating Temperature | 35 °C | - |
| Min Operating Temperature | 0 °C | - |
| Humidity Range Operating | 10 - 90% (non-condensing) | - |
| Manufacturer Warranty | Limited warranty - 3 years - response time: next business day Limited warranty - battery - 1 year |
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