HP ProBook 645 G4
HP's 14-inch AMD business laptop for 2018, built entirely around AMD Ryzen PRO Raven Ridge APUs (the Intel-based equivalent is the ProBook 640 G4). It dropped the optical drive of the G3 model in favour of extra ports, an NVMe SSD slot and an all-plastic case, but pairs that with a dim, low-contrast display and modest battery life.
Memory
- Slots
- 2 x DDR4 SO-DIMM (one occupied in the tested configuration)
- Speed
- DDR4-2400
- Tested config
- 8 GB (1 x 8 GB), single-channel
Storage
- M.2
- M.2 2280 slot, supports both NVMe and SATA-III SSDs
- Tested config
- Toshiba XG5 NVMe SSD, 256 GB
- 2.5" bay
- An additional 2.5" HDD/SSD can be installed; the review unit shipped without the mounting frame or SATA cable, sold separately by HP
- Card reader
- MicroSD card reader
Graphics
- Integrated
- AMD Radeon RX Vega 8, on the Ryzen 5 PRO 2500U configuration
Networking
- LAN
- Realtek RTL8168/8111 Gigabit Ethernet (10/100/1000)
- WLAN
- Realtek RTL8822BE 802.11ac (Wi-Fi 5), 2x2
- Bluetooth
- Bluetooth 4.2
- WWAN
- Optional LTE modem slot with SIM card tray and antennas (not populated in the tested configuration)
Power
- Adapter
- AC power adapter, exact wattage not confirmed from a fetched source
Ports
- Right side
- 3 x USB 3.1 Gen 1 (1 x Type-C, 2 x Type-A); HDMI-out; Gigabit Ethernet; VGA-out; docking station port; MicroSD card reader; power socket
- Left side
- Kensington lock slot; 1 x USB 3.1 Gen 1 Type-A; 3.5 mm combined audio jack; SmartCard reader
Display
- Panel
- 14" 16:9, 1920x1080 (Full HD), IPS (Innolux N140HCA-EAB), matte, 157 PPI
- Measured
- 225 cd/m² max / 209.2 cd/m² avg brightness, 331:1 contrast, per Notebookcheck's measurements
- Camera
- 0.9 MP webcam, 1280x720 max
Battery
- Type
- 48 Wh Lithium-ion, 4212 mAh, 11.4 V
- Measured runtime
- 4 h 50 min in Notebookcheck's Wi-Fi web-browsing test; 9 h 20 min idle; 1 h 28 min under load
Physical
- Dimensions
- 20.9 x 340 x 240 mm (H x W x D)
- Weight
- 1.73 kg device; power supply 291 g
- Keyboard
- Chiclet-style keyboard, no backlight on the tested configuration (a backlit version was sold)
- Audio
- Stereo speakers, Conexant CX8200 audio processor
- Build
- All-plastic case (no metal, unlike the G3); matte silver with black display bezels; bottom cover must be fully removed for internal access, no maintenance hatch
Management
- Security
- Trusted Platform Module 2.0; SmartCard reader; fingerprint reader; Kensington lock slot; HP Client Security software
Operating systems
- Preloads
- Microsoft Windows 10 Pro 64-bit (tested configuration)
Processors
- AMD Ryzen 5 PRO 2500U