In depth comparison and review of Lenovo ThinkPad P51 (20HJ) and Dell Precision 7750. 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 Dell Precision 7750 based on its technical characteristics, features, user experience, expert reviews and price level.
powerful quadro graphics
high-resolution display
expandable memory options
robust build quality
advanced thermal management
heavy and bulky
expensive base model
short battery life
noisy under load
| DESIGN AND DIMENSIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 37.74 cm x 25.23 cm x 2.94 cm | 40 cm x 26.36 cm x 2.86 cm |
| Weight | 2.55 kg | 3.01 kg |
| Case Material | Glass-fibre reinforced plastic, magnesium-aluminum alloy | - |
| Colour | Black | Grey |
| DISPLAY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Screen Size (Type) | 15.6" - IPS | 17.3" |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Pixel Density (ppi) | - | 127 |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 250 cd/m² | 500 cd/m² |
| Colour Gamut | - | 100% DCI-P3 |
| Features | Anti-glare | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle, 35 ms response rate, 0.198 mm pixel pitch |
| PROCESSOR | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| CPU | Intel Core i7 (7th Gen) 7820HQ / 2.9 GHz | Intel Core i7 (10th Gen) 10850H / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | 3.9 GHz | 5.1 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 |
| Platform Technology | - | Intel vPro Platform |
| Features | Integrated memory controller | Intel Smart Cache, Intel Thermal Velocity Boost |
| MEMORY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| RAM | 8 GB (1 x 8 GB) | 16 GB (2 x 8 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 128 GB |
| RAM Type | DDR4 SDRAM - non-ECC | DDR4 SDRAM |
| Speed | 2400 MHz | 2933 MHz |
| Rated Speed | 2400 MHz | 2933 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 4 | 4 |
| Empty Slots | 3 | 2 |
| STORAGE | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 6Gb/s / 7200 rpm | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M1200 / Intel HD Graphics 630 | NVIDIA Quadro RTX 3000 |
| Video Memory | 4 GB | 6 GB GDDR6 SDRAM |
| Camera | Yes - 720p | Yes - HD |
| Resolution | - | 0.92 Megapixel |
| Camera Features | - | 74.9 degrees |
| Video Resolutions | - | 1280 x 720 |
| Frame Rate | - | 30 frames per second |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3268 | Realtek ALC3281 |
| Compliant Standards | High Definition Audio | High Definition Audio |
| COMMUNICATIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| 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 |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Intel I219-LM |
| WWAN |
|---|
| Generation | - | 4G |
|---|---|---|
| Technology | - | LTE |
| Controller | - | Qualcomm Snapdragon X20 |
| BATTERY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Technology | 4-cell Lithium Ion | 6-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 66 Wh | 95 Wh |
| Battery Life | Up to 6.5 hours | - |
| AC ADAPTER | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt, 20 V | 240 Watt, 19.5 V, 12.3 A |
| INPUT | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad | Multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| 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 |
HDMI Mini DisplayPort 1.4 2 x USB-C 3.2 Gen 2 (supports Thunderbolt 3) USB 3.2 Gen 1 (PowerShare) 2 x USB 3.2 Gen 1 LAN Headphone/microphone combo jack |
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card, SDXC UHS-II Card) | Yes (SD Card, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition | Windows 10 Pro 64-bit Edition - Multilingual User Interface (MUI) |
|---|---|---|
| Software Included | - | Microsoft Office (Trial) |
| MISCELLANEOUS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 7750 |
|---|
| 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, smart card reader |
| Security Slot Type | Kensington security slot | Noble Wedge 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 | ExpressCharge |
| Compliant Standards | RoHS | FIPS 140-2, TCG Certified |
| ENERGY STAR Certified | Yes | - |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 0 °C |
| Humidity Range Operating | - | 10 - 90% (non-condensing) |
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