In depth comparison and review of Dell Precision 3551 and Lenovo ThinkPad P15 Gen 1 (20SU). 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 3551 based on its technical characteristics, features, user experience, expert reviews and price level.
robust processing power
expandable memory options
reliable build quality
adequate port selection
decent battery life
heavier design
basic display quality
noisy under load
premium price tag
Advantages and disadvantages of Lenovo ThinkPad P15 Gen 1 (20SU) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
excellent keyboard feel
good thermal management
reliable security features
heavy and bulky
expensive price point
average battery life
limited color accuracy
| DESIGN AND DIMENSIONS | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 35.91 cm x 23.625 cm x 1.499 cm | 37.54 cm x 25.23 cm x 3.145 cm |
| Weight | 1.89 kg | 2.74 kg |
| Case Material | - | Glass-fibre, glass-fibre reinforced plastic, polyphenylene sulfide |
| Colour | - | Black |
| DISPLAY | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Screen Size (Type) | 15.6" | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | - | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Pixel Density (ppi) | 141 | - |
| V-Sync Rate at Max Res. | 60 Hz | - |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | - | 16:9 |
| Image Brightness | - | 300 cd/m² |
| Colour Gamut | - | 72% NTSC |
| Features | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle | Anti-glare, 160° viewing angle |
| PROCESSOR | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| CPU | Intel Core i7 (10th Gen) 10750H / 2.6 GHz | Intel Core i7 (10th Gen) 10850H / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | 5 GHz | 5.1 GHz |
| Number of Cores | 6-core | 6-core |
| Cache | 12 MB | 12 MB |
| 64-bit Computing | Yes | - |
| Chipset | - | Mobile Intel WM490 |
| Features | Intel Turbo Boost Max Technology 3.0 | Integrated memory controller |
| MEMORY | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| RAM | 8 GB (1 x 8 GB) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 128 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM - non-ECC |
| Speed | 2933 MHz | 2933 MHz |
| Rated Speed | 2933 MHz | 3200 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 4 |
| Empty Slots | 1 | 3 |
| STORAGE | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe | 512 GB SSD M.2 2280 PCIe 3.0 x4 - TCG Opal Encryption - SK Hynix |
|---|---|---|
| RAID Level | - | RAID 0, RAID 1 |
| AUDIO & VIDEO | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro P620 | NVIDIA Quadro T2000 / Intel UHD Graphics |
| Max Monitors Supported | - | 4 external monitor(s) |
| Video Memory | 4 GB GDDR5 SDRAM | 4 GB GDDR6 SDRAM |
| Camera | Yes - HD | Yes - 720p |
| Resolution | 8 Megapixel | - |
| Camera Features | 78.6 degrees | ThinkShutter camera privacy |
| Image Sensor Type | CMOS | - |
| Video Resolutions | 1280 x 720 | - |
| Frame Rate | 30 frames per second | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3204 | Realtek ALC3286 |
| Compliant Standards | High Definition Audio, Wave MAXXAudio Pro | Dolby Atmos |
| COMMUNICATIONS | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Wireless | 802.11a/b/g/n/ac Wave 2/ax, Bluetooth 5.1 | 802.11a/b/g/n/ac/ax, Bluetooth 5.1 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6 AX 201 | Intel Wi-Fi 6 AX 201 - M.2 Card |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| BATTERY | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Technology | 4-cell | 6-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 68 Wh | 94 Wh |
| Battery Life | - | Up to 16.4 hours |
| AC ADAPTER | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 130 Watt, 20 V, 6.5 A | 170 Watt, 20 V |
| INPUT | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Type | Keyboard, touchpad, pointing stick | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | - | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Interfaces | HDMI USB-C 3.1 Gen 2 (supports Thunderbolt 3, DisplayPort 1.4 Alt Mode) USB 3.1 (PowerShare) 2 x USB 3.1 Gen 1 LAN Headphone/microphone combo jack |
USB 3.2 Gen 1 (Always On) 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 | Yes (microSD, microSDHC, microSDXC) | Yes (SD Card) |
| SOFTWARE | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition - Multilingual User Interface (MUI) | Windows 10 Pro 64-bit Edition |
|---|---|---|
| Software Included | Microsoft Office (Trial) | - |
| MISCELLANEOUS | Dell Precision 3551 | Lenovo ThinkPad P15 Gen 1 (20SU) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Trusted Platform Module (TPM 2.0) Security Chip, smart card reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Noble Wedge 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, 4x4 MiMo function |
| Compliant Standards | - | RoHS |
| ENERGY STAR Certified | - | Yes |
| EPEAT Compliant | - | EPEAT Gold |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 0 °C | 5 °C |
| Humidity Range Operating | 0 - 95% (non-condensing) | 8 - 95% |
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