| Processor | Lenovo Legion Y540 81Q400ERSP | |
| Processor model | i7-9750HF | |
| Processor cores | 6 | |
| Processor family | 9th gen Intel Core i7 | |
| Processor frequency | 2.6 GHz | |
| Processor boost frequency | 4.5 GHz | |
| Processor cache | 12 MB | |
| Software | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Operating system installed | No | |
| Display & Graphics | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Panel type | IPS | |
| Aspect ratio | 16:9 | |
| Display brightness | 300 cd/m? | |
| Display diagonal | 17.3 inch | |
| Display resolution | 1920 x 1080 pixels | |
| HD type | Full HD | |
| LED backlight | Yes | |
| Maximum refresh rate | 144 Hz | |
| Touchscreen | No | |
| Discrete graphics adapter | Yes | |
| Discrete graphics adapter memory | 6 GB | |
| Discrete graphics adapter model | NVIDIA GeForce GTX 1660 Ti | |
| Discrete graphics memory type | GDDR6 | |
| On-board graphics adapter | No | |
| On-board graphics adapter model | Not available | |
| Memory | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Internal memory | 16 GB | |
| Maximum internal memory | 32 GB | |
| Memory clock speed | 2666 MHz | |
| Memory layout (slots x size) | 2 x 8 GB | |
| Memory form factor | SO-DIMM | |
| Memory slots | 2x SO-DIMM | |
| Internal memory type | DDR4-SDRAM | |
| Storage | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| SSD capacity | 512 GB | |
| HDD capacity | 1000 GB | |
| HDD interface | SATA III | |
| SSD form factor | M.2 | |
| HDD speed | 5400 RPM | |
| Storage media | HDD SSD | |
| Number of SSDs installed | 1 | |
| Number of HDDs installed | 1 | |
| Total SSDs capacity | 512 GB | |
| Total HDDs capacity | 1000 GB | |
| Total storage capacity | 1512 GB | |
| Optical drive type | No | |
| Card reader integrated | No | |
| Network & Communication | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Antenna type | 2x2 | |
| Bluetooth | Yes | |
| Bluetooth version | 4.2 | |
| Ethernet LAN | Yes | |
| Wi-Fi | Wi-Fi 5 (802.11ac) | |
| Wi-Fi standards | Wi-Fi 5 (802.11ac) | |
| Interfaces/Ports | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| HDMI version | 2.0 | |
| HDMI ports quantity | 1 | |
| Charging port type | DC-in jack | |
| Combo headphone/mic port | Yes | |
| Ethernet LAN (RJ-45) ports | 1 | |
| Mini DisplayPorts quantity | 1 | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A | 3 | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C | 1 | |
| USB Sleep-and-Charge | 1 | |
| Input Devices | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Keyboard backlit | Yes | |
| Keyboard backlit colour | White | |
| Numeric keypad | Yes | |
| Pointing device | Touchpad | |
| Audio | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Audio chip | Realtek ALC3287 | |
| Built-in microphone | Yes | |
| Number of speakers | 2 | |
| Number of microphones | 2 | |
| Speaker power | 2 W | |
| Speakers manufacturer | Harman Kardon | |
| Built-in Devices | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Front camera | Yes | |
| Front camera HD type | HD | |
| Front camera resolution | 1 MP | |
| Power | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| AC adapter power | 230 W | |
| Security | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Cable lock slot | Yes | |
| Fingerprint reader | No | |
| Password protection | Yes | |
| Trusted Platform Module (TPM) | Yes | |
| Design | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Brand | Lenovo | |
| Family | Legion | |
| Model name | Y540 | |
| Part Number | 81Q400ERSP | |
| Product type | Notebook | |
| Form factor | Clamshell | |
| Product colour | Black | |
| Market positioning | Gaming | |
| Housing material | Acrylonitrile butadiene styrene (ABS), Polycarbonate | |
| Depth | 290 mm | |
| Width | 399.8 mm | |
| Height (rear) | 2.63 cm | |
| Height (front) | 2.5 cm | |
| Weight | 2.84 kg | |
| Release Date | 2020-04-02 | |
| Battery Information | Lenovo Legion Y540 81Q400ERSP | other notebooks |
| Battery capacity | 57 Wh | |
| Battery type | Lithium-Ion (Li-Ion) | |
| Battery life | 3.9 h | |
