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Silver 14-inch HP ProBook 645 G4 laptop with minor scratches and dents

HP

HP ProBook 645 G4 14" Ryzen 5 PRO 2500U 16GB 256GB laptop

SKU CH-AJJG-M6SQY

A 14-inch business laptop with a Ryzen 5 PRO 2500U quad-core processor, 16GB DDR4 memory, a 256GB NVMe SSD and Windows 11 Pro

  • ColorSilver
  • Operating SystemWindows 11 Pro
  • CPU TypeAMD Ryzen 5 PRO
  • Core NameAMD Ryzen 5 PRO 2500U
  • Number of CoresQuad-core Processor
  • Screen Size14.0"
  • Quad-core Ryzen 5 PRO 2500U boosts to 3.6 GHz for responsive multitasking
  • 16 GB DDR4-2400 memory keeps many apps open without slowdown
  • 256 GB PCIe NVMe M.2 SSD loads Windows 11 Pro and files quickly
  • 14" anti-glare HD display reduces reflections in bright rooms
  • Realtek 802.11ac 2x2 Wi-Fi and Bluetooth 4.2 give stable wireless connections

HP ProBook 645 G4 14" Business Laptop

The HP ProBook 645 G4 is a 14-inch laptop built for everyday office tasks. It runs on an AMD Ryzen 5 PRO 2500U quad-core processor with a 2.0 GHz base clock and 3.6 GHz max boost. The system includes 16GB DDR4-2400 RAM and a 256GB PCIe NVMe M.2 SSD. Windows 11 Pro comes pre-installed for professional use.

Thermals and Power Profile

The integrated AMD Radeon Vega 8 graphics share system memory, keeping power draw modest during typical workloads. The 1366 x 768 HD anti-glare display operates at 220 cd/m² brightness with 45% sRGB coverage. Fan activity scales with CPU load but remains unobtrusive for standard document editing and web browsing.

Connectivity and Software Ready

Realtek 802.11 a/b/g/n/ac (2x2) Wi-Fi and Bluetooth 4.2 provide wireless connectivity for peripherals and networks. Windows 11 Pro enables domain join, BitLocker encryption and remote desktop features out of the box. Buyers who need a touchscreen, dedicated graphics or higher colour accuracy should consider other models.

Highlights

  • Quad-core Ryzen 5 PRO 2500U boosts to 3.6 GHz for responsive multitasking
  • 16 GB DDR4-2400 memory keeps many apps open without slowdown
  • 256 GB PCIe NVMe M.2 SSD loads Windows 11 Pro and files quickly
  • 14" anti-glare HD display reduces reflections in bright rooms
  • Realtek 802.11ac 2x2 Wi-Fi and Bluetooth 4.2 give stable wireless connections

Specifications

BrandHP
ModelProBook 645 G4
Part Number2GS89AV-I010-RB-
ColorSilver
Operating SystemWindows 11 Pro
CPU TypeAMD Ryzen 5 PRO
Core NameAMD Ryzen 5 PRO 2500U
Number of CoresQuad-core Processor
Screen Size14.0"
TouchscreenNo
Resolution1366 x 768
GPU/VPUAMD Radeon Vega 8
Video MemoryShared system memory
Graphic TypeIntegrated Graphics
SSD256 GB
HDDNo
Memory16GB
Memory SpeedDDR4 2400
Memory Spec16
Optical Drive TypeNo
LANNo
WLAN802.11ac Wireless LAN
BluetoothBluetooth 4.2
USB1 x USB 3.1 Type-C (charging)
3 x USB 3.1 Gen 1 (1 charging)
1 x AC power
Video Port1 x VGA
1 x HDMI 1.4
EthernetNo
Audio Ports1 x headphone/microphone combo
SpeakerDual speakers
TouchpadMulti Touch
KeyboardHP Premium Keyboard, spill-resistant
Webcam720p HD webcam
TypeMainstream
Battery3-cell, 48 Wh Li-ion
Weight3.8

Questions about this item

How do I install the M.2 NVMe SSD in this ProBook 645 G4, and which step do people get wrong?

Remove the bottom cover, insert the 256 GB PCIe NVMe M.2 drive into the slot at an angle, then press it down and secure the single retention screw; the step often missed is pressing the drive fully flat before tightening the screw, which leaves the connector unseated.

What maintenance or replacement will the 16 GB DDR4 memory need later?

The 16 GB DDR4-2400 is soldered to the board, so it cannot be upgraded or replaced; the only memory-related maintenance is keeping the system firmware current to ensure proper memory training and stability.

What limit shows up first on the Radeon Vega 8 graphics under sustained load?

The shared system memory and 220 cd/m² panel constrain sustained performance; the integrated Vega 8 uses main RAM for video memory, so heavy 3D workloads hit bandwidth limits before the GPU core reaches its maximum 3.6 GHz boost clock.

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