Side by side comparison and review of Lenovo ThinkPad P51 (20MN) and HP Zbook 15 G1. Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.
Advantages and disadvantages of Lenovo ThinkPad P51 (20MN) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard
powerful processor
high-resolution display
good connectivity options
heavy and bulky
expensive
average battery life
noisy under load
Advantages and disadvantages of HP Zbook 15 G1 based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful quad-core processor
expandable memory options
high-resolution display
good connectivity options
heavier than competitors
older model
noisy under load
average battery life
| DESIGN AND DIMENSIONS | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 37.74 cm x 25.23 cm x 2.94 cm | 38.15 cm x 25.7 cm x 3.55 cm |
| Weight | 2.67 kg | 2.82 kg |
| Case Material | Glass-fibre reinforced plastic, magnesium-aluminum alloy | Magnesium-aluminum alloy |
| Colour | Black | Graphite, hematite |
| DISPLAY | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Screen Size (Type) | 15.6" - IPS | 15.6" |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | - |
| Image Brightness | 250 cd/m² | - |
| Features | Anti-glare, 160° viewing angle | Full HD standard-viewing angle (SVA) eDP anti-glare |
| PROCESSOR | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| CPU | Intel Xeon E3-1505MV5 / 2.8 GHz | Intel Core i7 (4th Gen) 4700MQ / 2.4 GHz |
|---|---|---|
| Max Turbo Speed | 3.7 GHz | 3.4 GHz |
| Number of Cores | Quad-Core | Quad-Core |
| Cache | 8 MB | L3 - 6 MB |
| 64-bit Computing | - | Yes |
| Chipset | Mobile Intel CM238 | Intel QM87 |
| Features | Integrated memory controller | Intel Turbo Boost Technology 2.0 |
| MEMORY | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| RAM | 16 GB (1 x 16 GB) | 16 GB |
|---|---|---|
| Max RAM Supported | 64 GB | 32 GB |
| RAM Type | DDR4 SDRAM | DDR3L SDRAM |
| Speed | 2133 MHz | - |
| Rated Speed | 2400 MHz | - |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 204-pin |
| Slots Qty | 4 | 4 |
| Empty Slots | 3 | - |
| STORAGE | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption, NVM Express (NVMe) - Samsung | 240 GB SSD |
|---|---|---|
| Optical Drive | - | DVD-Writer removable - tray |
| AUDIO & VIDEO | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M2200 / Intel HD Graphics P530 | - |
| Max Monitors Supported | 3 external monitor(s) | - |
| Video Memory | 4 GB | - |
| Camera | Yes - 720p | Yes - HD |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, stereo microphone |
| Codec | Realtek ALC3268 | IDT 92HD91 |
| Compliant Standards | High Definition Audio | High Definition Audio, DTS Studio Sound |
| COMMUNICATIONS | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | - |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 8260 - M.2 Card | - |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| BATTERY | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Technology | 6-cell Lithium Ion | Lithium Ion |
|---|---|---|
| Max Supported Qty | - | 2 |
| Battery Capacity (Size) | 90 Wh | - |
| Battery Life | Up to 8.9 hours | - |
| AC ADAPTER | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt, 20 V | - |
| INPUT | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad, pointing stick |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad | Volume control, spill-resistant, touchpad with gesture support |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Expansion Bays | - | 1 x Upgrade Bay |
|---|---|---|
| Slots | 1 x ExpressCard/34 (1 free) | 1 x ExpressCard/54 (1 free) |
| Interfaces | 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 |
VGA DisplayPort Thunderbolt Headphone/microphone combo jack LAN 3 x USB 3.0 USB 2.0 Battery Dock |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) | Yes (SDHC Card, SDXC Card, SDXC UHS-II Card) |
| SOFTWARE | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition (available through downgrade rights from Windows 10 Pro for Workstations 64-bit Edition) + Windows 10 Pro for Workstations 64-bit Edition Licence | Windows 10 Home (Microsoft Authorized Refurbisher (MAR)) |
|---|
| MISCELLANEOUS | Lenovo ThinkPad P51 (20MN) | HP Zbook 15 G1 |
|---|
| Dockable | Yes | Yes |
|---|---|---|
| Included Accessories | Power adapter | Power adapter |
| Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Trusted Platform Module (TPM 1.2) Security Chip |
| Security Slot Type | Kensington security slot | Kensington security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | Administrator password, hard drive password, power-on password, MIL-STD-810G tested | - |
| Compliant Standards | RoHS | ACPI, CSA, UL, VCCI, BSMI, ISO 9001, ISO 14001, CCC, FCC, RoHS, FIPS 140-2, WEEE, A-Tick, ICES, KC, ISO 27001 |
| ENERGY STAR Certified | Yes | Yes |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 5 °C |
| Humidity Range Operating | - | 10 - 90% (non-condensing) |
| Manufacturer Warranty | - | Limited warranty - 2 years - pick-up and return |
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