| Processor | HP EliteBook 840 G3 1CT05UPR | |
| Processor model | i5-6300U | |
| Processor series | Intel Core i5-6300 Mobile Series | |
| Processor socket | LGA 1356 (Socket B2) | |
| Processor threads | 4 | |
| Processor cores | 2 | |
| Processor codename | Skylake | |
| Processor family | 6th gen Intel Core i5 | |
| Processor frequency | 2.4 GHz | |
| Processor boost frequency | 3 GHz | |
| Processor cache | 3 MB | |
| Thermal Design Power (TDP) | 15 W | |
| Display & Graphics | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Aspect ratio | 16:9 | |
| Display diagonal | 14 inch | |
| Display resolution | 1920 x 1080 pixels | |
| Dual-screen | No | |
| HD type | Full HD | |
| LED backlight | Yes | |
| Discrete graphics adapter | No | |
| Discrete graphics adapter model | Not available | |
| Maximum on-board graphics adapter memory | 1.74 GB | |
| On-board graphics adapter | Yes | |
| On-board graphics adapter base frequency | 300 MHz | |
| On-board graphics adapter dynamic frequency (max) | 1000 MHz | |
| On-board graphics adapter family | Intel HD Graphics | |
| On-board graphics adapter model | Intel HD Graphics 520 | |
| On-board graphics adapter OpenGL | 4.4 | |
| Memory | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Internal memory | 8 GB | |
| Maximum internal memory | 32 GB | |
| Memory clock speed | 2133 MHz | |
| Memory form factor | SO-DIMM | |
| Memory slots | 2x SO-DIMM | |
| Internal memory type | DDR4-SDRAM | |
| Storage | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| SSD capacity | 128 GB | |
| Storage media | SSD | |
| Number of SSDs installed | 1 | |
| Total SSDs capacity | 128 GB | |
| Total storage capacity | 128 GB | |
| Optical drive type | No | |
| Card reader integrated | Yes | |
| Compatible memory cards | SD, SDHC, SDXC | |
| Network & Communication | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Ethernet LAN | Yes | |
| Wi-Fi | Yes | |
| Interfaces/Ports | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Combo headphone/mic port | Yes | |
| VGA (D-Sub) ports | 1 | |
| DisplayPorts quantity | 1 | |
| Docking connector | Yes | |
| Ethernet LAN (RJ-45) ports | 1 | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A | 2 | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C | 1 | |
| Input Devices | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Keyboard backlit | Yes | |
| Numeric keypad | No | |
| Pointing device | Touchpad | |
| Spill resistant keyboard | Yes | |
| Audio | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Audio system | Bang & Olufsen | |
| Built-in microphone | Yes | |
| Built-in Devices | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Front camera | Yes | |
| Design | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Brand | HP | |
| Family | EliteBook | |
| Series | 800 | |
| Model name | 840 G3 | |
| Part Number | 1CT05UPR | |
| Product type | Notebook | |
| Form factor | Clamshell | |
| Product colour | Silver | |
| Release Date | 2018-01-21 | |
| Battery Information | HP EliteBook 840 G3 1CT05UPR | other notebooks |
| Battery capacity | 46 Wh | |
| Battery type | Lithium Polymer (LiPo) | |
| Number of battery cells | 3 | |
