| Attribute |
Lenovo ThinkPad W540 (20BH002CMD) × | 
DELL Latitude E6540 (E6540-NL-SB38) × |
| General | | |
| Model | Lenovo ThinkPad W540 | DELL Latitude E6540 |
| Product code | 20BH002CMD | E6540-NL-SB38 |
| Design | | |
| Product colour | Black | Black, Silver |
| Form factor | Clamshell | Clamshell |
| Brand | Lenovo | DELL |
| Family | ThinkPad | Latitude |
| Series | W | 6000 |
| Model name | W540 | E6540 |
| Part number | 20BH002CMD | E6540-NL-SB38 |
| Market positioning | - | Business |
| Release year (year) | 2013 | 2020 |
| Processor | | |
| Processor manufacturer | - | Intel |
| Processor family | 4th gen Intel Core i7 | 4th gen Intel Core i5 |
| Processor frequency (GHz) | 2.7 | 2.6 |
| Processor boost frequency (GHz) | 3.7 | 3.3 |
| Processor model | i7-4800MQ | i5-4300M |
| Processor cores | 4 | 2 |
| Processor threads | 8 | 4 |
| Processor lithography (Nm) | 22 | 22 |
| Processor socket | PGA946 | PGA946 |
| Processor cache (MB) | 6 | 3 |
| Memory | | |
| Internal memory type | DDR3-SDRAM | DDR3-SDRAM |
| Maximum internal memory (GB) | 32 | 16 |
| Memory clock speed (MHz) | 1,600 | 1,600 |
| Internal memory (GB) | 8 | 4 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | Full HD | HD |
| LED backlight | + | + |
| Touchscreen | - | - |
| Display resolution | 1920 x 1080 pixels | 1366 x 768 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA Quadro K1100M | - |
| Discrete graphics adapter | + | - |
| Discrete graphics adapter memory (GB) | 2 | - |
| On-board graphics adapter base frequency (MHz) | 400 | 400 |
| Maximum on-board graphics adapter memory (GB) | 74 | 74 |
| On-board graphics adapter model | Intel HD Graphics 4600 | Intel HD Graphics 4600 |
| Storage | | |
| Total storage capacity (GB) | 180 | 128 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 180 | 128 |
| Card reader integrated | + | + |
| Storage media | SSD | SSD |
| Optical drive | + | + |
| Networking | | |
| Wi-Fi standards | - ieee 802.11a
- ieee 802.11ac
- ieee 802.11b
- ieee 802.11g
- ieee 802.11n
| - 802.11b
- 802.11g
- wi-fi 4 (802.11n)
|
| Bluetooth | + | + |
| Ethernet LAN | + | + |
| Ethernet LAN data rates (Mbit/s) | | |
| Wi-Fi | + | - |
| 3g | - | - |
| Bluetooth version | 4.0 | 4.0 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 4 |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 2 | - |
| Docking connector | + | + |
| USB Sleep-and-Charge | + | - |
| DVI port | - | - |
| HDMI ports quantity | - | 1 |
| Ethernet LAN (RJ-45) ports | 1 | 1 |
| Audio | | |
| Speaker power (W) | 1 | - |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera resolution (pixels) | 1280 x 720 | 1280 x 720 |
| Keyboard | | |
| Numeric keypad | + | + |
| Keyboard backlit | + | - |
| Pointing device | - | Touchpad |
| Software | | |
| Operating system installed | Windows 8 Pro | Windows 7 Professional |
| Operating system architecture (bit) | 64 | 64 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 99 | 65 |
| Battery life (max) (h) | 11.1 | - |
| Weight and dimensions | | |
| Weight (kg) | 2.7 | 2.56 |
| Height (mm) | - | 33.4 |
| Depth (mm) | 248.1 | 250.5 |
| Width (mm) | 376.6 | 379 |
| Power | | |
| AC adapter power (W) | 170 | 130 |
| Security | | |
| Cable lock slot | - | + |
| Fingerprint reader | + | - |
| Trusted platform module (TPM) | + | - |