In depth comparison and review of Lenovo ThinkPad P51 (20HJ) and Dell Precision 5770. 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 5770 based on its technical characteristics, features, user experience, expert reviews and price level.
stunning 4k display
powerful intel processors
slim, lightweight design
excellent build quality
good battery life
high price point
limited port selection
noisy under load
average webcam quality
| DESIGN AND DIMENSIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 37.74 cm x 25.23 cm x 2.94 cm | 37.448 cm x 24.808 cm x 1.315 cm |
| Weight | 2.55 kg | 2.17 kg |
| Case Material | Glass-fibre reinforced plastic, magnesium-aluminum alloy | - |
| Colour | Black | Grey |
| DISPLAY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Screen Size (Type) | 15.6" - IPS | 17" |
|---|---|---|
| Touchscreen | - | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | WLED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 3840 x 2400 (UHD+) |
| Pixel Density (ppi) | - | 266 |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | 250 cd/m² | 500 cd/m² |
| Colour Gamut | - | 100% sRGB |
| Features | Anti-glare | Anti-reflective, Wide Viewing Angle, ±85° horizontal viewing angle, ±85° vertical viewing angle, 35 ms response rate, Low Blue Light technology, 0.0954 mm pixel pitch |
| PROCESSOR | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| CPU | Intel Core i7 (7th Gen) 7820HQ / 2.9 GHz | Intel Core i7 (12th Gen) 12700H / 2.3 GHz |
|---|---|---|
| Max Turbo Speed | 3.9 GHz | 4.7 GHz |
| Number of Cores | Quad-Core | 14-core |
| Cache | 8 MB | 24 MB |
| 64-bit Computing | Yes | - |
| Chipset | Mobile Intel CM238 | Intel H45 |
| Platform Technology | - | Intel vPro Platform |
| Features | Integrated memory controller | Intel Smart Cache, Intel Deep Learning Boost (DL Boost) |
| MEMORY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| RAM | 8 GB (1 x 8 GB) | 16 GB (2 x 8 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 64 GB |
| RAM Type | DDR4 SDRAM - non-ECC | DDR5 SDRAM |
| Speed | 2400 MHz | 4800 MHz |
| Rated Speed | 2400 MHz | 4800 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 262-pin |
| Slots Qty | 4 | 2 |
| Empty Slots | 3 | 0 |
| STORAGE | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 6Gb/s / 7200 rpm | 512 GB SSD M.2 2280 PCIe 4.0 x4 - NVM Express (NVMe), Class 40 |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M1200 / Intel HD Graphics 630 | NVIDIA RTX A2000 |
| Video Memory | 4 GB | 8 GB GDDR6 SDRAM |
| Camera | Yes - 720p | Yes - 1280 x 720 (standard), 640 x 360 (infrared) |
| Resolution | - | 0.92 Megapixel (standard), 0.23 Megapixel (infrared) |
| Camera Features | - | IR camera, RGB camera, 78.5 degrees |
| Image Sensor Type | - | CMOS |
| Video Resolutions | - | 1280 x 720 |
| Frame Rate | - | 30 frames per second |
| Sound | Stereo speakers, dual array microphone | Two subwoofers, two tweeters, dual array microphone |
| Codec | Realtek ALC3268 | Realtek ALC711-CG |
| Compliant Standards | High Definition Audio | - |
| COMMUNICATIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | Bluetooth, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 8265 - M.2 Card | Intel Wi-Fi 6E AX 211 |
| Network Interface | Gigabit Ethernet | - |
| Features | - | Dual stream (2x2) |
| BATTERY | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Technology | 4-cell Lithium Ion | 6-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 66 Wh | 97 Wh |
| Battery Life | Up to 6.5 hours | - |
| AC ADAPTER | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt, 20 V | 130 Watt, 5 / 20 V |
| INPUT | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad | - |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| 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 |
4 x USB-C (supports Thunderbolt 4, DisplayPort Alt Mode) (DC-In combo, Power Delivery) 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 5770 |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition | Windows 10 Pro 64-bit Edition + Windows 11 Pro Licence - Dutch / English / French / German / Italian |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial, excludes office licence) |
| MISCELLANEOUS | Lenovo ThinkPad P51 (20HJ) | Dell Precision 5770 |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | USB-C power adapter |
| Integrated Options | - | Accelerometer, ambient light sensor, proximity sensor |
| Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Trusted Platform Module (TPM 2.0) Security Chip |
| 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 |
| 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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