In depth comparison and review of Dell Latitude E5540 and Lenovo ThinkPad E15 Gen 2 (20TD). 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 E15 Gen 2 (20TD) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
efficient performance
comfortable keyboard
good security features
reasonable price
average display quality
limited graphics power
no thunderbolt support
mediocre battery life
| DESIGN AND DIMENSIONS | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 37.9 cm x 25.05 cm x 2.97 cm | 36.5 cm x 24 cm x 1.89 cm |
| Weight | 2.3 kg | 1.7 kg |
| Case Material | - | Aluminum, polycarbonate ABS |
| Colour | Black | Grey | Black |
| DISPLAY | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Screen Size (Type) | 15.6" | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | WLED 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 |
| Colour Gamut | - | 45% NTSC |
| Features | Anti-glare, WideView | Anti-glare, 170° viewing angle |
| PROCESSOR | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| CPU | Intel Core i5 (4th Gen) 4200U / 1.6 GHz | Intel Core i5 (11th Gen) 1135G7 / 2.4 GHz |
|---|---|---|
| Max Turbo Speed | 2.6 GHz | 4.2 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | 8 MB |
| 64-bit Computing | Yes | Yes |
| Features | Hyper-Threading Technology, Intel Turbo Boost Technology 2.0, Intel Smart Cache | Integrated memory controller |
| MEMORY | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| RAM | 4 GB (1 x 4 GB) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 16 GB | 32 GB |
| RAM Type | DDR3L SDRAM | DDR4 SDRAM |
| Speed | 1600 MHz / PC3L-12800 | 3200 MHz |
| Rated Speed | 1600 MHz | 3200 MHz |
| Form Factor | SO-DIMM 204-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 1 |
| Empty Slots | 1 | 0 |
| STORAGE | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 3Gb/s / 5400 rpm | 256 GB SSD M.2 2242 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|---|---|
| Optical Drive | DVD±RW | - |
| Read Speed | 8x | - |
| AUDIO & VIDEO | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4400 | Intel Iris Xe Graphics |
|---|---|---|
| Memory Allocation Technology | Dynamic Video Memory Technology | Shared Video Memory (UMA) |
| Max Monitors Supported | - | 2 external monitor(s) |
| Camera | Yes | Yes - 720p |
| Camera Features | 720p HD movie recording | IR camera, ThinkShutter camera privacy |
| Sound | Stereo speakers, stereo microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3226 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Audio |
| Audio Features | - | Harman/kardon stereo speakers |
| COMMUNICATIONS | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Wireless | Bluetooth 4.0, 802.11a/b/g/n/ac | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 7260 | Intel Wi-Fi 6 AX 201 - M.2 Card |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Realtek RTL8111H-CG |
| Features | Intel Wireless Display (WiDi) | Dual stream (2x2) |
| BATTERY | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Technology | 9-cell Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 97 Wh | 45 Wh |
| Battery Life | - | Up to 10.8 hours |
| AC ADAPTER | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | - | Yes |
| Features | Multi-touch touchpad | Spill-resistant, multi-touch touchpad, buttonless touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Slots | 1 x PCI Express Half Mini Card 1 x ExpressCard |
1 x M.2 Card (1 free) |
|---|---|---|
| Interfaces | LAN 2 x USB 2.0 USB 3.0 Headphone/microphone combo jack VGA HDMI Dock |
USB 3.2 Gen 1 (Always On) USB 2.0 USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
| Memory Card Reader | 8 in 1 (SD Card) | - |
| SOFTWARE | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition - English | Windows 11 Pro - English |
|---|---|---|
| Software Included | McAfee SecurityCenter (30 days trial) | - |
| MISCELLANEOUS | Dell Latitude E5540 | Lenovo ThinkPad E15 Gen 2 (20TD) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | USB-C power adapter |
| Security | Trusted Platform Module (TPM) Security Chip | Firmware 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 | ExpressCharge | Administrator password, hard drive password, power-on password, RapidCharge, MIL-STD-810H tested |
| Compliant Standards | - | RoHS, TUV Rheinland Low Blue Light Certification, Energy-Related Products (ErP) Lot 3 |
| SAR Value | - | 0.438 W/kg (body), 0.438 W/kg (limb) |
| ENERGY STAR Certified | Yes | Yes |
| EPEAT Compliant | - | EPEAT Gold |
| TCO Certified | - | TCO Certified Notebooks 8 |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 0 °C | 5 °C |
| Humidity Range Operating | 10 - 90% (non-condensing) | 8 - 95% |
| Manufacturer Warranty | Limited warranty - 3 years - response time: next business day | Limited warranty - 1 year - pick-up and return |
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