In depth comparison and review of Dell Precision 5520 and Lenovo ThinkPad P1 Gen 6 (21FW). 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 P1 Gen 6 (21FW) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
powerful processor performance
high-resolution display
excellent keyboard feel
advanced security features
higher price point
moderate battery life
heavier than competitors
limited color options
| DESIGN AND DIMENSIONS | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Product Type | Mobile workstation | Mobile workstation - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 35.7 cm x 23.5 cm x 1.7 cm | 35.95 cm x 25.38 cm x 1.75 cm |
| Weight | 2 kg | 1.86 kg |
| Case Material | - | Aluminium (bottom), carbon fibre reinforced plastic (top), glass-fibre reinforced plastic hybrid (top) |
| Colour | Silver | Black paint |
| DISPLAY | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Screen Size (Type) | 15.6" | 16" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1200 (WUXGA) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | - | 16:10 |
| Image Brightness | 400 cd/m² | 300 cd/m² |
| Colour Gamut | - | 100% sRGB |
| Features | UltraSharp, anti-glare, Wide Viewing Angle | Anti-glare, Low Blue Light technology, X-Rite Pantone factory color calibration, 86.2% screen-to-body ratio, DC dimming |
| PROCESSOR | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| CPU | Intel Core i7 (6th Gen) 6820HQ / 2.7 GHz | Intel Core i7 (13th Gen) 13800H / 2.5 GHz |
|---|---|---|
| Max Turbo Speed | 3.6 GHz | 5.2 GHz |
| Number of Cores | Quad-Core | 14-core |
| Cache | 8 MB | 24 MB |
| 64-bit Computing | Yes | - |
| Chipset | Mobile Intel CM236 Express | - |
| Platform Technology | Intel vPro Platform | - |
| Features | Intel Turbo Boost Technology 2.0 | Integrated memory controller |
| MEMORY | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| RAM | 8 GB (1 x 8 GB) | 32 GB (2 x 16 GB) |
|---|---|---|
| Max RAM Supported | 32 GB | 96 GB |
| RAM Type | DDR4 SDRAM | DDR5 SDRAM - non-ECC |
| Speed | 2133 MHz | 5600 MHz |
| Rated Speed | - | 5600 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 262-pin |
| Slots Qty | 2 | 2 |
| Empty Slots | 1 | 0 |
| STORAGE | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe | 512 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption - Kioxia |
|---|---|---|
| RAID Level | - | RAID 0, RAID 1 |
| AUDIO & VIDEO | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA Quadro M1200 | NVIDIA RTX A1000 / Intel Iris Xe Graphics |
| Max Monitors Supported | - | 3 external monitor(s) |
| Video Memory | 4 GB GDDR5 SDRAM | 6 GB GDDR6 SDRAM |
| Video System Features | - | NVIDIA TXAA, Direct X 12 Ultimate, Vulkan Support, NVIDIA FXAA |
| Camera | Yes | Yes - 1080p |
| Resolution | 0.92 Megapixel | - |
| Camera Features | - | Privacy shutter, Windows Hello, fixed focus, hybrid FHD/IR camera, Ultrasonic Human Presence Detection |
| Video Resolutions | 1280 x 720 | - |
| Frame Rate | 30 frames per second | - |
| Sound | Stereo speakers, microphone | Stereo speakers, dual array microphone |
| Codec | - | Realtek ALC3306 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Atmos |
| Audio Features | - | Input: Dolby Voice, far-field |
| COMMUNICATIONS | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 8265 | Intel Wi-Fi 6E AX 211 |
| Network Interface | Gigabit Ethernet | - |
| Features | Miracast | - |
| BATTERY | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Technology | 3-cell lithium polymer | 4-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 56 Wh | 90 Wh |
| AC ADAPTER | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 130 Watt, 19.5 V, 6.67 A | 170 Watt |
| INPUT | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| Features | - | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls, glass touchpad |
| CONNECTIONS & EXPANSIONS | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Slots | - | 2 x M.2 (PCI Express 4.0 x4) (1 free) |
|---|---|---|
| Interfaces | USB-C (supports Thunderbolt 3) LAN (on supplied cable) 2 x USB 3.0 (PowerShare) Headphone/microphone combo jack HDMI |
USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI (8K support) Headphone/microphone combo jack |
| Memory Card Reader | Yes (SD Card) | Yes (SD Express Card) |
| SOFTWARE | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition + Windows 10 Pro 64-bit Licence - Multilingual User Interface (MUI) | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence |
|---|---|---|
| Software Included | Microsoft Office (Trial), McAfee (30 days trial) | - |
| MISCELLANEOUS | Dell Precision 5520 | Lenovo ThinkPad P1 Gen 6 (21FW) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Trusted Platform Module (TPM) Security Chip | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | - | Kensington nano security slot |
| Theft/Intrusion Protection | - | Security lock slot (cable lock sold separately) |
| Features | - | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password |
| Compliant Standards | - | RoHS, TUV Rheinland Low Blue Light Certification, TCG Certified, TCO Certified 9.0 |
| Max Operating Temperature | 40 °C | 35 °C |
| Min Operating Temperature | 0 °C | 5 °C |
| Humidity Range Operating | 10 - 90% (non-condensing) | 8 - 95% |
| Manufacturer Warranty | Limited warranty - 1 year - response time: next business day | - |
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