In depth comparison and review of HP ZBook Power G9 Mobile Workstation and Lenovo ThinkPad P51 (20HJ). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
DESIGN AND DIMENSIONS | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Product Type | Mobile workstation | Mobile workstation |
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Dimensions (WxDxH) | 35.94 cm x 23.39 cm x 2.28 cm | 37.74 cm x 25.23 cm x 2.94 cm |
Weight | 1.9 kg | 2.55 kg |
Case Material | ABS plastic, anodised aluminium, metal, talc | Glass-fibre reinforced plastic, magnesium-aluminum alloy |
Colour | - | Black |
DISPLAY | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Screen Size (Type) | 15.6" | 15.6" - IPS |
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LCD Backlight Technology | WLED backlight | LED backlight |
Screen Resolution | - | 1920 x 1080 (Full HD) |
V-Sync Rate at Max Res. | 60 Hz | - |
Widescreen | Yes | Yes |
Image Aspect Ratio | - | 16:9 |
Image Brightness | - | 250 cd/m² |
Features | - | Anti-glare |
PROCESSOR | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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CPU | Intel Core i7 (12th Gen) 12800H / 2.4 GHz | Intel Core i7 (7th Gen) 7820HQ / 2.9 GHz |
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Max Turbo Speed | 4.8 GHz | 3.9 GHz |
Number of Cores | 14-core | Quad-Core |
Cache | L3 - 24 MB | 8 MB |
64-bit Computing | - | Yes |
Chipset | - | Mobile Intel CM238 |
Features | Intel Turbo Boost Max Technology 3.0 | Integrated memory controller |
MEMORY | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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RAM | 0 MB | 8 GB (1 x 8 GB) |
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Max RAM Supported | 64 GB | 64 GB |
RAM Type | DDR5 SDRAM | DDR4 SDRAM - non-ECC |
Speed | - | 2400 MHz |
Rated Speed | - | 2400 MHz |
Form Factor | SO-DIMM 262-pin | SO-DIMM 260-pin |
Slots Qty | 2 | 4 |
Empty Slots | 2 | 3 |
STORAGE | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Main Storage Size (HDD/SSD) | - | 500 GB HDD SATA 6Gb/s / 7200 rpm |
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AUDIO & VIDEO | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Multi-GPU Configuration | 1 single GPU card / integrated GPU | 1 single GPU card / integrated GPU |
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Graphics Processor (GPU) | NVIDIA RTX A2000 / Intel Iris Xe Graphics | NVIDIA Quadro M1200 / Intel HD Graphics 630 |
Video Memory | 8 GB GDDR6 SDRAM | 4 GB |
Camera | - | Yes - 720p |
Sound | Stereo speakers | Stereo speakers, dual array microphone |
Codec | Realtek ALC3315 | Realtek ALC3268 |
Compliant Standards | High Definition Audio | High Definition Audio |
Audio Features | Bang & Olufsen Audio, discrete amplifiers | - |
COMMUNICATIONS | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Wireless | - | 802.11a/b/g/n/ac, Bluetooth 4.1 |
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Wireless Controller | - | Intel Dual Band Wireless-AC 8265 - M.2 Card |
Network Interface | Gigabit Ethernet | Gigabit Ethernet |
Ethernet Controller | Intel I219-V | - |
BATTERY | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Technology | - | 4-cell Lithium Ion |
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Battery Capacity (Size) | - | 66 Wh |
Battery Life | - | Up to 6.5 hours |
AC ADAPTER | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Input | - | AC 120/230 V (50/60 Hz) |
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Output | - | 170 Watt, 20 V |
INPUT | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Type | Keyboard, ClickPad | Keyboard, TrackPoint, UltraNav |
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Keyboard Name | HP Premium | - |
Numeric Keypad | - | Yes |
Features | Volume control, spill-resistant, multi-touch clickpad, gesture function, precision touchpad | Spill-resistant, multi-touch touchpad |
CONNECTIONS & EXPANSIONS | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Slots | - | 1 x ExpressCard/34 (1 free) |
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Interfaces | USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery, Sleep & Charge) HDMI USB 3.1 Gen 1 (charging) Headphone/microphone combo jack LAN 2 x USB 3.1 Gen 1 |
USB 3.1 Gen 1/USB 3.0 (Always On) 3 x USB 3.1 Gen 1/USB 3.0 USB-C (supports Thunderbolt 3) Mini DisplayPort HDMI LAN Dock Headphone/microphone combo jack |
Memory Card Reader | - | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) |
SOFTWARE | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Operating System (OS) | No operating system | Windows 10 Pro 64-bit Edition |
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MISCELLANEOUS | HP ZBook Power G9 Mobile Workstation | Lenovo ThinkPad P51 (20HJ) |
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Dockable | - | Yes |
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Included Accessories | - | Power adapter |
Integrated Options | Accelerometer, magnetometer, gyro sensor, hall sensor | - |
Security | Trusted Platform Module (TPM 2.0) Security Chip, smart card reader | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
Security Slot Type | Kensington nano security slot | Kensington security slot |
Theft/Intrusion Protection | Security lock slot (cable lock sold separately), chassis intrusion sensor | Security lock slot (cable lock sold separately) |
Features | Automatic DriveLock, HP DriveLock, HP Fast Charge, BIOS Update via Network | Administrator password, hard drive password, power-on password, ThinkVantage Active Protection System, MIL-STD-810G tested |
Compliant Standards | CSA, UL, VCCI, BSMI, SABS, CCC, FIPS 140-2 Level 2, FCC, RoHS, KCC, WEEE, A-Tick, ICES, Common Criteria EAL4+, EAC, CIT, ICCP, MIL-STD-810H | RoHS |
ENERGY STAR Certified | - | Yes |
Max Operating Temperature | 35 °C | - |
Min Operating Temperature | 0 °C | - |
Humidity Range Operating | 10 - 90% (non-condensing) | - |