In depth comparison and review of Dell Precision 3551 and Dell Precision 7780. 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 Dell Precision 7780 based on its technical characteristics, features, user experience, expert reviews and price level.
powerful processing capabilities
high-resolution display
robust build quality
extensive connectivity options
scalable memory and storage
heavier than competitors
expensive base model
average battery life
noisy under load
| DESIGN AND DIMENSIONS | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 35.91 cm x 23.625 cm x 1.499 cm | 39.8 cm x 26.502 cm x 2.67 cm |
| Weight | 1.89 kg | 3.02 kg |
| Colour | - | Grey |
| DISPLAY | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Screen Size (Type) | 15.6" | 17.3" |
|---|---|---|
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Pixel Density (ppi) | 141 | 127 |
| V-Sync Rate at Max Res. | 60 Hz | 60 Hz |
| Widescreen | Yes | Yes |
| Image Brightness | - | 500 cd/m² |
| Colour Gamut | - | 99% DCI-P3 |
| Features | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle, 35 ms response rate, 0.198 mm pixel pitch |
| PROCESSOR | Dell Precision 3551 | Dell Precision 7780 |
|---|
| CPU | Intel Core i7 (10th Gen) 10750H / 2.6 GHz | Intel Core i7 (13th Gen) 13850HX / 2.1 GHz |
|---|---|---|
| Max Turbo Speed | 5 GHz | 5.3 GHz |
| Number of Cores | 6-core | 20-core |
| Cache | 12 MB | L3 - 30 MB |
| 64-bit Computing | Yes | - |
| Features | Intel Turbo Boost Max Technology 3.0 | - |
| MEMORY | Dell Precision 3551 | Dell Precision 7780 |
|---|
| RAM | 8 GB (1 x 8 GB) | 16 GB (1 x 16 GB) |
|---|---|---|
| Max RAM Supported | 64 GB | 128 GB |
| RAM Type | DDR4 SDRAM | DDR5 SDRAM - non-ECC |
| Speed | 2933 MHz | 4800 MHz |
| Rated Speed | 2933 MHz | 4800 MHz |
| Form Factor | SO-DIMM 260-pin | CAMM |
| Slots Qty | 2 | - |
| Empty Slots | 1 | - |
| STORAGE | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe | 512 GB SSD M.2 2280 PCIe 4.0 x4 - NVM Express (NVMe), Class 40 |
|---|
| AUDIO & VIDEO | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Graphics Processor (GPU) | NVIDIA Quadro P620 | NVIDIA RTX 2000 Ada |
|---|---|---|
| Video Memory | 4 GB GDDR5 SDRAM | 8 GB GDDR6 SDRAM |
| Camera | Yes - HD | Yes - Full HD |
| Resolution | 8 Megapixel | - |
| Camera Features | 78.6 degrees | Privacy shutter, IR camera, 70 degrees (IR camera) |
| Image Sensor Type | CMOS | - |
| Video Resolutions | 1280 x 720 | 1920 x 1080 |
| Frame Rate | 30 frames per second | 30 frames per second |
| Sound | Stereo speakers, dual array microphone | Two tweeters, two woofers, dual array microphone |
| Codec | Realtek ALC3204 | Realtek ALC3281 |
| Compliant Standards | High Definition Audio, Wave MAXXAudio Pro | - |
| COMMUNICATIONS | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Wireless | 802.11a/b/g/n/ac Wave 2/ax, Bluetooth 5.1 | Bluetooth, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6 AX 201 | Intel Wi-Fi 6E AX 211 |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Intel I219-LM |
| BATTERY | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Technology | 4-cell | 6-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 68 Wh | 93 Wh |
| AC ADAPTER | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 130 Watt, 20 V, 6.5 A | 240 Watt, 19.5 V, 12.3 A |
| INPUT | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Type | Keyboard, touchpad, pointing stick | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | - | Precision touchpad |
| CONNECTIONS & EXPANSIONS | Dell Precision 3551 | Dell Precision 7780 |
|---|
| 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 |
HDMI 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) USB 3.2 Gen 1 (PowerShare) USB 3.2 Gen 1 LAN Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (microSD, microSDHC, microSDXC) | Yes (SD Card, SDHC Card, SDXC Card) |
| SOFTWARE | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition - Multilingual User Interface (MUI) | Windows 11 Pro - Dutch / English / French / German / Italian |
|---|---|---|
| Software Included | Microsoft Office (Trial) | Microsoft Office (30 days trial, excludes office licence) |
| MISCELLANEOUS | Dell Precision 3551 | Dell Precision 7780 |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Integrated Options | - | Accelerometer, ambient light sensor, proximity sensor, hall sensor |
| Security | Trusted Platform Module (TPM 2.0) Security Chip, smart card reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, smart card reader |
| Security Slot Type | Noble Wedge security slot | Noble Wedge security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | - | Chassis intrusion detection, ExpressCharge |
| Compliant Standards | - | FIPS 140-2, TCG Certified |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 0 °C | 0 °C |
| Humidity Range Operating | 0 - 95% (non-condensing) | 10 - 90% (non-condensing) |
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