Detailed comparison and review of Lenovo ThinkPad P51 (20MN) and Lenovo ThinkPad P73 (20QS). With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.
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 Lenovo ThinkPad P73 (20QS) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
excellent keyboard feel
high-resolution display
ample connectivity options
heavy and bulky
expensive price point
average battery life
loud fan noise
| DESIGN AND DIMENSIONS | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 37.74 cm x 25.23 cm x 2.94 cm | 41.6 cm x 28.1 cm x 3.1 cm |
| Weight | 2.67 kg | 3.4 kg |
| Case Material | Glass-fibre reinforced plastic, magnesium-aluminum alloy | Glass-fibre reinforced plastic, magnesium-aluminum alloy, polyphenylene sulfide |
| Colour | Black | Black |
| DISPLAY | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| 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% |
| Features | Anti-glare, 160° viewing angle | Anti-glare, 160° viewing angle |
| PROCESSOR | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| CPU | Intel Xeon E3-1505MV5 / 2.8 GHz | Intel Core i9 (9th Gen) 9880H / 2.3 GHz |
|---|---|---|
| Max Turbo Speed | 3.7 GHz | 4.8 GHz |
| Number of Cores | Quad-Core | 8-core |
| Cache | 8 MB | 16 MB |
| 64-bit Computing | - | Yes |
| Chipset | Mobile Intel CM238 | Mobile Intel CM246 |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| RAM | 16 GB (1 x 16 GB) | 16 GB (2 x 8 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 128 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2133 MHz | - |
| Rated Speed | 2400 MHz | - |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 4 | 4 |
| Empty Slots | 3 | 2 |
| STORAGE | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption, NVM Express (NVMe) - Samsung | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption - Samsung |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M2200 / Intel HD Graphics P530 | NVIDIA Quadro RTX 4000 / Intel UHD Graphics 630 |
| Max Monitors Supported | 3 external monitor(s) | - |
| Video Memory | 4 GB | 8 GB GDDR6 SDRAM |
| Video System Features | - | Max-Q design |
| Camera | Yes - 720p | Yes - 720p |
| Camera Features | - | IR camera, ThinkShutter camera privacy |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3268 | Conexant CX11880 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Atmos |
| VR Ready | - | Yes |
| COMMUNICATIONS | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| 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 8260 - M.2 Card | Intel Wireless-AX 22260 - M.2 Card |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| BATTERY | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Technology | 6-cell Lithium Ion | 6-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 90 Wh | 99 Wh |
| Battery Life | Up to 8.9 hours | Up to 10 hours |
| AC ADAPTER | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt, 20 V | 230 Watt, 20 V |
| INPUT | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| 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 |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| Slots | 1 x ExpressCard/34 (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 3.1 Gen 1 (Always On) 2 x USB 3.1 Gen 1 USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) 2 x USB-C 3.1 Gen 1 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) HDMI LAN Headphone/microphone combo jack |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) |
| SOFTWARE | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| 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 Pro 64-bit Edition |
|---|
| MISCELLANEOUS | Lenovo ThinkPad P51 (20MN) | Lenovo ThinkPad P73 (20QS) |
|---|
| 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 |
| 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 | Administrator password, hard drive password, power-on password, RapidCharge, MIL-STD-810G tested |
| Compliant Standards | RoHS | RoHS |
| ENERGY STAR Certified | Yes | Yes |
| EPEAT Compliant | - | EPEAT Silver |
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