Detailed comparison and review of Dell Precision 7740 and Dell Precision 3551. With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.
Advantages and disadvantages of Dell Precision 7740 based on its technical characteristics, features, user experience, expert reviews and price level.
powerful processor performance
high-resolution display
expandable memory options
robust build quality
excellent graphics capabilities
heavier than competitors
expensive base model
shorter battery life
limited portability
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
| DESIGN AND DIMENSIONS | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Product Type | Mobile workstation | Mobile workstation |
|---|---|---|
| Dimensions (WxDxH) | 41.42 cm x 27.37 cm x 3.03 cm | 35.91 cm x 23.625 cm x 1.499 cm |
| Weight | 3.09 kg | 1.89 kg |
| Colour | Black | - |
| DISPLAY | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Screen Size (Type) | 17.3" - IPS | 15.6" |
|---|---|---|
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Pixel Density (ppi) | 127 | 141 |
| V-Sync Rate at Max Res. | 60 Hz | 60 Hz |
| Widescreen | Yes | Yes |
| Image Brightness | 300 cd/m² | - |
| Colour Gamut | 72%, 100% sRGB | - |
| Features | UltraSharp, anti-glare, Premium Panel Guarantee, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle |
| PROCESSOR | Dell Precision 7740 | Dell Precision 3551 |
|---|
| CPU | Intel Core i7 (9th Gen) 9850H / 2.6 GHz | Intel Core i7 (10th Gen) 10750H / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.6 GHz | 5 GHz |
| Number of Cores | 6-core | 6-core |
| Cache | 12 MB | 12 MB |
| 64-bit Computing | Yes | Yes |
| Chipset | Mobile Intel CM246 | - |
| Platform Technology | Intel vPro Platform | - |
| Features | Intel Turbo Boost Technology 2.0 | Intel Turbo Boost Max Technology 3.0 |
| MEMORY | Dell Precision 7740 | Dell Precision 3551 |
|---|
| RAM | 16 GB (2 x 8 GB) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 128 GB | 64 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2666 MHz | 2933 MHz |
| Rated Speed | 2666 MHz | 2933 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 4 | 2 |
| Empty Slots | 2 | 1 |
| STORAGE | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe | 256 GB SSD M.2 PCIe |
|---|
| AUDIO & VIDEO | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Graphics Processor (GPU) | NVIDIA Quadro RTX 3000 | NVIDIA Quadro P620 |
|---|---|---|
| Video Memory | 6 GB GDDR6 SDRAM | 4 GB GDDR5 SDRAM |
| Camera | Yes | Yes - HD |
| Resolution | 0.92 Megapixel | 8 Megapixel |
| Camera Features | 720p HD movie recording | 78.6 degrees |
| Image Sensor Type | - | CMOS |
| Video Resolutions | 1280 x 720 | 1280 x 720 |
| Frame Rate | 30 frames per second | 30 frames per second |
| Sound | Stereo speakers, array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3281 | Realtek ALC3204 |
| Compliant Standards | High Definition Audio | High Definition Audio, Wave MAXXAudio Pro |
| COMMUNICATIONS | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Wireless | Bluetooth 5.0, 802.11a/b/g/n/ac Wave 2/ax | 802.11a/b/g/n/ac Wave 2/ax, Bluetooth 5.1 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6 AX 200 - M.2 Card | Intel Wi-Fi 6 AX 201 |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | Intel I219-LM | - |
| BATTERY | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Technology | 6-cell lithium polymer | 4-cell |
|---|---|---|
| Battery Capacity (Size) | 97 Wh | 68 Wh |
| AC ADAPTER | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 240 Watt, 19.5 V, 12.31 A | 130 Watt, 20 V, 6.5 A |
| INPUT | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad, pointing stick |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | Yes | Yes |
| Features | Multi-gesture touch pad | - |
| CONNECTIONS & EXPANSIONS | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Interfaces | Mini DisplayPort HDMI 3 x USB 3.1 Gen 1 (PowerShare) Headphone/microphone combo jack LAN 2 x USB-C (supports Thunderbolt 3) |
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 |
|---|---|---|
| Memory Card Reader | Yes (SD Card, SDHC Card, SDXC Card) | Yes (microSD, microSDHC, microSDXC) |
| SOFTWARE | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition - Multilingual User Interface (MUI) | Windows 10 Pro 64-bit Edition - Multilingual User Interface (MUI) |
|---|---|---|
| Software Included | Microsoft Office (Trial) | Microsoft Office (Trial) |
| MISCELLANEOUS | Dell Precision 7740 | Dell Precision 3551 |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Smart card reader | 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 | ExpressCharge | - |
| Compliant Standards | ISO 14443 type A, FIPS 201 | - |
| Max Operating Temperature | 35 °C | 35 °C |
| Min Operating Temperature | 0 °C | 0 °C |
| Humidity Range Operating | 20 - 80% (non-condensing) | 0 - 95% (non-condensing) |
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