| Series | EliteBook 640 |
| Software | Windows 11 Pro |
| Processor, series | Intel Core Ultra 7 |
| Processor | Intel Core Ultra 7 155U 1.70 GHz, 12 MB cache |
| Memory, GB | 16GB 5600MHz (2x8GB) |
| Memory, slots | 2 SODIMM slots |
| Memory, type | DDR5 |
| Hard drive, type | SSD |
| Hard drive, GB | 1000GB PCIe Gen4 NVMe TLC M.2 |
| Display, inch | 14.0" (35.56 cm) |
| Touch display | Touch |
| IPS matrix | IPS |
| Display, resolution | 1920x1200 |
| Refresh rate, Hz | 60Hz |
| Display, type | Anti-Glare |
| Video card, type | Integrated |
| Video card model | Intel Graphics |
| Video card, GB | - |
| Optical drive | - |
| Sound | Audio by Poly Studio, dual stereo speakers with discrete amplifiers, integrated dual array microphones |
| Network | Intel I219-V GbE |
| Wireless Network | Intel Wi-Fi 6E AX211 (2x2) |
| Bluetooth | Bluetooth 5.3 |
| 4G/LTE | - |
| M.2 slot | - |
| USB port | 2 USB Type-A |
| HDMI port | HDMI |
| Display port | - |
| Ethernet (RJ-45) port | RJ-45 |
| Serial (RS-232) port | - |
| Expansion port | 2 Thunderbolt 4 with USB Type-C (USB Power Delivery, DisplayPort 1.4) |
| Audio ports | 1 stereo headphone/microphone combo jack |
| VGA connector | - |
| Dock connector | - |
| Card reader cards | Smart Card Reader |
| Fingerprint Reader | Fingerprint Reader |
| Web camera, MP | 5MP IR camera |
| Keyboard, type | Backlit Keyboard |
| Cyrillization | No Cyrillic keyboard |
| Windows OS | yes |
| Battery, cell | HP Long Life 3-cell, 56 Wh Li-ion battery |
| Dimensions (W, D, H), cm | 31.9 x 22.4 x 1.7 cm |
| Color | Silver |
| Body finish | Metal |
| Weight, kg | 1.39 kg |
| Warranty | 36 months |