In depth comparison and review of Dell Inspiron 15 3511 and Lenovo ThinkPad T440p (20AW). 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 Inspiron 15 3511 based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
lightweight design
decent battery life
solid build quality
intuitive touchpad
average display quality
modest processor speed
limited graphics performance
fewer USB-C ports
DESIGN AND DIMENSIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 35.85 cm x 23.556 cm x 1.89 cm | 33.5 cm x 22.91 cm x 2.995 cm |
Weight | 1.73 kg | 2.16 kg |
Case Material | - | Glass-fibre reinforced plastic, carbon fibre reinforced plastic |
Colour | Carbon black | - |
DISPLAY | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Screen Size (Type) | 15.6" | 14" |
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LCD Backlight Technology | LED backlight | LED backlight |
Screen Resolution | 1920 x 1080 (Full HD) | 1366 x 768 (HD) |
Pixel Density (ppi) | 141 | - |
V-Sync Rate at Max Res. | 60 Hz | - |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:9 |
Image Brightness | 220 cd/m² | 200 cd/m² |
Colour Gamut | 45% NTSC | - |
Features | Anti-glare, Wide Viewing Angle, ±80° horizontal viewing angle, ±80° vertical viewing angle, Narrow Border Display, 35 ms response rate, 0.179 mm pixel pitch | Anti-glare |
PROCESSOR | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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CPU | Intel Core i3 (11th Gen) 1115G4 / 3 GHz | Intel Core i3 (4th Gen) 4100M / 2.5 GHz |
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Max Turbo Speed | 4.1 GHz | - |
Number of Cores | Dual-Core | Dual-Core |
Cache | 6 MB | 3 MB |
64-bit Computing | - | Yes |
Chipset | - | Intel QM87 |
Features | Intel Turbo Boost Technology 2.0, Intel Smart Cache | Integrated memory controller |
MEMORY | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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RAM | 4 GB (1 x 4 GB) | 2 GB |
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Max RAM Supported | 16 GB | 16 GB |
RAM Type | DDR4 SDRAM | DDR3L SDRAM |
Speed | 2666 MHz | 1600 MHz / PC3L-12800 |
Rated Speed | 2666 MHz | 1600 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 204-pin |
Slots Qty | 2 | 2 |
Empty Slots | 1 | - |
STORAGE | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Main Storage Size (HDD/SSD) | 128 GB SSD M.2 PCIe 3.0 x4 - NVM Express (NVMe) | 500 GB HDD SATA 6Gb/s |
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Optical Drive | - | DVD-Writer removable |
AUDIO & VIDEO | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
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Graphics Processor (GPU) | Intel UHD Graphics | NVIDIA GeForce GT 730M / Intel HD Graphics 4600 |
Video Memory | - | 1 GB |
Video System Features | - | NVIDIA Optimus |
Camera | Yes - HD | Yes - 720p |
Resolution | 0.92 Megapixel | - |
Camera Features | 78.6 degrees, RGB camera | Face tracking |
Image Sensor Type | CMOS | - |
Video Resolutions | 1280 x 720 | - |
Frame Rate | 30 frames per second | - |
Sound | Stereo speakers, microphone | Stereo speakers, two microphones |
Codec | - | Realtek ALC3232 |
Compliant Standards | High Definition Audio | High Definition Audio, Dolby Advanced Audio v2 |
COMMUNICATIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Wireless | Bluetooth, 802.11a/b/g/n/ac | 802.11b/g/n, Bluetooth 4.0 |
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Wireless Controller | M.2 2230 | M.2 Card |
Network Interface | - | Gigabit Ethernet |
Ethernet Controller | - | Intel I217-LM |
BATTERY | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Technology | 3-cell lithium polymer | 6-cell Lithium Ion |
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Battery Capacity (Size) | 41 Wh | 56 Wh |
Battery Life | - | Up to 7.2 hours |
AC ADAPTER | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
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Output | 65 Watt, 19.5 V, 3.34 A | 90 Watt |
INPUT | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
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Numeric Keypad | Yes | - |
Features | - | Spill-resistant, multi-touch touchpad |
CONNECTIONS & EXPANSIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Expansion Bays | - | 1 x Ultrabay |
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Interfaces | HDMI USB 2.0 2 x USB 3.2 Gen 1 Headphone/microphone combo jack |
2 x USB 3.0 2 x USB 2.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack |
Memory Card Reader | Yes (SD Card, SDHC Card, SDXC Card) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
SOFTWARE | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Operating System (OS) | Windows 10 Home 64-bit Edition in S mode | Windows 8.1 Pro 64-bit Edition |
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Software Included | Microsoft Office (30 days trial, excludes office licence) | - |
MISCELLANEOUS | Dell Inspiron 15 3511 | Lenovo ThinkPad T440p (20AW) |
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Dockable | - | Yes |
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Included Accessories | Power adapter | Power adapter |
Security | - | Trusted Platform Module (TPM 1.2) Security Chip |
Security Slot Type | - | Kensington security slot |
Theft/Intrusion Protection | - | Security lock slot (cable lock sold separately) |
Features | - | Administrator password, hard drive password, power-on password, ThinkVantage Active Protection System, 1 USB 2.0 (Always On), MIL-STD-810G tested |
Compliant Standards | - | RoHS, GREENGUARD |
ENERGY STAR Certified | Yes | Yes |
Max Operating Temperature | 40 °C | - |
Min Operating Temperature | 0 °C | - |
Humidity Range Operating | 10 - 90% (non-condensing) | - |