| Processor | HP ProBook 640 G1 Base Model K9T78AV | |
| Processor model | i5-4300M | |
| Processor series | Intel Core i5-4300 Mobile series | |
| Processor socket | PGA946 | |
| Processor threads | 4 | |
| Processor cores | 2 | |
| Processor codename | Haswell | |
| Processor family | 4th gen Intel Core i5 | |
| Processor frequency | 2.6 GHz | |
| Motherboard chipset | Intel QM87 | |
| Processor boost frequency | 3.3 GHz | |
| Processor cache | 3 MB | |
| Thermal Design Power (TDP) | 37 W | |
| Software | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Operating system installed | Windows 7 Professional | |
| Recovery operating system | Windows 8.1 Pro | |
| Operating system architecture | 32-bit | |
| Display & Graphics | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Panel type | SVA | |
| Aspect ratio | 16:9 | |
| Display diagonal | 14 inch | |
| Display number of colours | 16.78 million colors | |
| Display resolution | 1600 x 900 pixels | |
| Display surface | Matt | |
| HD type | HD | |
| 3D | No | |
| LED backlight | Yes | |
| Touchscreen | No | |
| Discrete graphics adapter | No | |
| Discrete graphics adapter model | Not available | |
| Maximum on-board graphics adapter memory | 1.74 GB | |
| Number of discrete graphics adapters supported | 1 | |
| On-board graphics adapter | Yes | |
| On-board graphics adapter base frequency | 400 MHz | |
| On-board graphics adapter DirectX version | 11.1 | |
| On-board graphics adapter dynamic frequency (max) | 1250 MHz | |
| On-board graphics adapter family | Intel HD Graphics | |
| On-board graphics adapter memory | 1.7 GB | |
| On-board graphics adapter model | Intel HD Graphics 4600 | |
| Memory | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Internal memory | 4 GB | |
| Maximum internal memory | 16 GB | |
| Memory clock speed | 1600 MHz | |
| Memory layout (slots x size) | 1 x 4 GB | |
| Memory form factor | SO-DIMM | |
| Memory slots | 2x SO-DIMM | |
| Internal memory type | DDR3-SDRAM | |
| Storage | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| HDD capacity | 500 GB | |
| HDD interface | Serial ATA | |
| HDD speed | 7200 RPM | |
| Storage media | HDD | |
| Number of HDDs installed | 1 | |
| Total storage capacity | 500 GB | |
| Disc types supported | CD, DVD | |
| LightScribe | No | |
| Optical drive type | DVD Super Multi DL | |
| Card reader integrated | Yes | |
| Compatible memory cards | SD, SDHC, SDXC | |
| Network & Communication | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| 3G | No | |
| Bluetooth | Yes | |
| Bluetooth version | 4.0 | |
| Ethernet LAN | Yes | |
| Wi-Fi | Yes | |
| Wi-Fi standards | IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n | |
| WWAN | Yes | |
| Interfaces/Ports | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| CardBus PCMCIA slot type | No | |
| Charging port type | DC-in jack | |
| Headphone outputs | 1 | |
| Combo headphone/mic port | Yes | |
| VGA (D-Sub) ports | 1 | |
| DisplayPorts quantity | 1 | |
| Docking connector | Yes | |
| DVI port | No | |
| Ethernet LAN (RJ-45) ports | 1 | |
| ExpressCard slot | No | |
| S/PDIF out port | No | |
| SmartCard slot | No | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A | 4 | |
| USB Sleep-and-Charge | 1 | |
| Input Devices | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Full-size keyboard | Yes | |
| Island-style keyboard | Yes | |
| Keyboard backlit | Yes | |
| Numeric keypad | No | |
| Pointing device | Touchpad | |
| Spill resistant keyboard | Yes | |
| Windows keys | Yes | |
| Audio | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Audio system | DTS Studio Sound | |
| Built-in microphone | Yes | |
| Number of speakers | 2 | |
| Built-in Devices | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Front camera | Yes | |
| Front camera resolution | 1280 x 720 pixels | |
| Power | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| AC adapter frequency | 50/60 Hz | |
| AC adapter input voltage | 100 - 240 V | |
| AC adapter power | 65 W | |
| Power auto-sensing | Yes | |
| Security | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Cable lock slot | Yes | |
| Cable lock slot type | Kensington | |
| Fingerprint reader | Yes | |
| Password protection | Yes | |
| Trusted Platform Module (TPM) | Yes | |
| Design | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Brand | HP | |
| Family | ProBook | |
| Series | 600 | |
| Model name | 640 G1 Base Model | |
| Part Number | K9T78AV | |
| Product type | Notebook | |
| Form factor | Clamshell | |
| Product colour | Black, Silver | |
| Depth | 237 mm | |
| Width | 345 mm | |
| Height (front) | 2.53 cm | |
| Weight | 2 kg | |
| Release Date | 2015-01-31 | |
| Battery Information | HP ProBook 640 G1 Base Model K9T78AV | other notebooks |
| Battery capacity | 55 Wh | |
| Battery type | Lithium-Ion (Li-Ion) | |
| Number of battery cells | 6 | |
