In depth comparison and review of Lenovo ThinkPad P51 (20HJ) and Lenovo ThinkPad P17 Gen 1 (20SN). 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.
Advantages and disadvantages of Lenovo ThinkPad P17 Gen 1 (20SN) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
high-resolution display
ample connectivity options
expandable memory slots
heavy and bulky
expensive price point
average battery life
loud fan noise
| DESIGN AND DIMENSIONS | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 37.74 cm x 25.23 cm x 2.94 cm | 41.544 cm x 28.081 cm x 3.325 cm |
| Weight | 2.55 kg | 3.5 kg |
| Case Material | Glass-fibre reinforced plastic, magnesium-aluminum alloy | Glass-fibre, polyphenylene sulfide |
| Colour | Black | Black |
| DISPLAY | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Screen Size (Type) | 15.6" - IPS | 17.3" - IPS |
|---|---|---|
| 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 | 16:9 |
| Image Brightness | 250 cd/m² | 300 cd/m² |
| Colour Gamut | - | 72% NTSC |
| Features | Anti-glare | Anti-glare, 160° viewing angle, 72% NTSC colour gamut |
| PROCESSOR | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| CPU | Intel Core i7 (7th Gen) 7820HQ / 2.9 GHz | Intel Core i7 (10th Gen) 10750H / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 3.9 GHz | 5 GHz |
| Number of Cores | Quad-Core | 6-core |
| Cache | 8 MB | 12 MB |
| 64-bit Computing | Yes | Yes |
| Chipset | Mobile Intel CM238 | Mobile Intel WM490 |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| RAM | 8 GB (1 x 8 GB) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 128 GB |
| RAM Type | DDR4 SDRAM - non-ECC | DDR4 SDRAM - non-ECC |
| Speed | 2400 MHz | 2933 MHz |
| Rated Speed | 2400 MHz | 3200 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 4 | 4 |
| Empty Slots | 3 | 3 |
| STORAGE | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 6Gb/s / 7200 rpm | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|---|---|
| RAID Level | - | RAID 0, RAID 1 |
| AUDIO & VIDEO | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M1200 / Intel HD Graphics 630 | NVIDIA Quadro T1000 / Intel UHD Graphics |
| Video Memory | 4 GB | 4 GB GDDR6 SDRAM |
| Camera | Yes - 720p | Yes - 720p |
| Camera Features | - | IR camera, Windows Hello, ThinkShutter camera privacy |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3268 | Realtek ALC3286 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Atmos |
| COMMUNICATIONS | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | 802.11a/b/g/n/ac/ax, Bluetooth 5.1 |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 8265 - M.2 Card | Intel Wi-Fi 6 AX 201 - M.2 Card |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Intel I219-V |
| Features | - | Dual stream (2x2) |
| BATTERY | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Technology | 4-cell Lithium Ion | 6-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 66 Wh | 94 Wh |
| Battery Life | Up to 6.5 hours | Up to 14.6 hours |
| AC ADAPTER | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt, 20 V | 170 Watt, 20 V |
| INPUT | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Slots | 1 x ExpressCard/34 (1 free) | 2 x M.2 Card (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 |
USB 3.2 Gen 1 (Always On) 2 x USB 3.2 Gen 1 USB-C 3.2 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) 2 x USB-C 3.2 Gen 2 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) HDMI Headphone/microphone combo jack LAN |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) | Yes (SD Card) |
| SOFTWARE | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition | Windows 10 Pro 64-bit Edition - German |
|---|
| MISCELLANEOUS | Lenovo ThinkPad P51 (20HJ) | Lenovo ThinkPad P17 Gen 1 (20SN) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | Power adapter |
| Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader |
| 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, ThinkVantage Active Protection System, MIL-STD-810G tested | Administrator password, hard drive password, power-on password, MIL-STD-810G tested, self-healing BIOS |
| Compliant Standards | RoHS | RoHS |
| ENERGY STAR Certified | Yes | - |
| Manufacturer Warranty | - | Limited warranty - 3 years - pick-up and return Limited warranty - battery - 1 year |
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