In depth comparison and review of Dell Latitude E6440 and Lenovo ThinkPad P51. 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 P51 based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard comfort
powerful processor performance
high-resolution display
good connectivity options
heavy and bulky
expensive price point
moderate battery life
noisy under load
| DESIGN AND DIMENSIONS | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 33.8 cm x 23.26 cm x 3.18 cm | 37.74 cm x 25.23 cm x 2.94 cm |
| Weight | 2.12 kg | 2.67 kg |
| Case Material | Anodised aluminium | Glass-fibre reinforced plastic, magnesium-aluminum alloy |
| Colour | Black, silver | Black | Black |
| DISPLAY | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Screen Size (Type) | 14" | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1366 x 768 (HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | - | 250 cd/m² |
| Features | Anti-glare, BFR/PVC-free | Anti-glare |
| PROCESSOR | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| CPU | Intel Core i5 (4th Gen) 4300M / 2.6 GHz | Intel Xeon E3-1505MV6 / 3 GHz |
|---|---|---|
| Max Turbo Speed | 3.3 GHz | 4 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | 8 MB |
| 64-bit Computing | Yes | Yes |
| Chipset | Intel QM87 | Mobile Intel CM238 |
| Platform Technology | Intel vPro Platform | Intel vPro Platform |
| Features | Hyper-Threading Technology, Intel Turbo Boost Technology 2.0, Intel vPro Technology | Hyper-Threading Technology, integrated memory controller, Intel Turbo Boost Technology 2.0 |
| MEMORY | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| RAM | 4 GB (1 x 4 GB) | 16 GB |
|---|---|---|
| Max RAM Supported | 16 GB | 64 GB |
| RAM Type | DDR3L SDRAM | DDR4 SDRAM |
| Speed | 1600 MHz / PC3-12800 | 2400 MHz |
| Rated Speed | 1600 MHz | - |
| Form Factor | SO-DIMM 204-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 4 |
| Empty Slots | 1 | - |
| STORAGE | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Main Storage Size (HDD/SSD) | 320 GB HDD SATA 3Gb/s / 7200 rpm | 512 GB SSD |
|---|---|---|
| Optical Drive | DVD±RW | - |
| Read Speed | 8x | - |
| AUDIO & VIDEO | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | Intel HD Graphics 4600 | NVIDIA Quadro M2200 / Intel HD Graphics P630 |
| Video Memory | - | 4 GB |
| Camera | Yes | Yes - 720p |
| Camera Features | 720p HD movie recording | - |
| Video Resolutions | 1280 x 720 | - |
| Sound | Stereo speakers, microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3226 | Realtek ALC3268 |
| Compliant Standards | High Definition Audio | High Definition Audio |
| Audio Features | MaxxAudio | - |
| COMMUNICATIONS | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Wireless | Bluetooth, 802.11b/g/n | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | Intel Centrino Advanced-N 6235 | - |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Features | Intel Wireless Display (WiDi) | - |
| BATTERY | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Technology | 6-cell Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 60 Wh | - |
| AC ADAPTER | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 19.5 V, 3.34 A | 170 Watt |
| INPUT | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Type | Keyboard, touchpad, DualPoint | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | - |
| Features | Multi-touch touchpad | Spill-resistant, multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Slots | - | 1 x ExpressCard/34 (1 free) |
|---|---|---|
| Interfaces | LAN 4 x USB 3.0 Headphone/microphone combo jack VGA HDMI Dock |
USB 3.1 Gen 1/USB 3.0 (Always On) 3 x USB 3.1 Gen 1/USB 3.0 USB-C (supports Thunderbolt 3) Mini DisplayPort HDMI LAN Dock Headphone/microphone combo jack |
| Memory Card Reader | Yes (SD Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition - English | Windows 10 Pro 64-bit Edition (Microsoft Authorized Refurbisher (MAR)) |
|---|---|---|
| Software Included | Dell Webcam Central | - |
| MISCELLANEOUS | Dell Latitude E6440 | Lenovo ThinkPad P51 |
|---|
| Dockable | Yes | 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 |
| 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, Intel Active Management Technology (iAMT), MIL-STD-810G tested |
| Compliant Standards | FIPS 140-2, MIL-STD 810G | ISO 9001, ISO 14001, ISO 27001 |
| 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 |
Limited warranty - 2 years - pick-up and return |
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