In depth comparison and review of Dell Inspiron 15 3511 and Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S). 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 IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.85 cm x 23.556 cm x 1.89 cm | 30.59 cm x 21.382 cm x 1.36 cm |
| Weight | 1.73 kg | 1.14 kg |
| Case Material | - | Aluminum |
| Colour | Carbon black | Platinum silver |
| DISPLAY | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Screen Size (Type) | 15.6" | 13.3" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | 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 | 16:9 |
| Image Brightness | 220 cd/m² | 300 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 IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| CPU | Intel Core i3 (11th Gen) 1115G4 / 3 GHz | AMD Ryzen 5 2500U / 2 GHz |
|---|---|---|
| Max Turbo Speed | 4.1 GHz | 3.6 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 6 MB | 4 MB |
| 64-bit Computing | - | Yes |
| Features | Intel Turbo Boost Technology 2.0, Intel Smart Cache | Integrated memory controller |
| MEMORY | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| RAM | 4 GB (1 x 4 GB) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 16 GB | - |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2666 MHz | 2133 MHz |
| Rated Speed | 2666 MHz | 2133 MHz |
| Form Factor | SO-DIMM 260-pin | - |
| Slots Qty | 2 | - |
| Empty Slots | 1 | - |
| STORAGE | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD M.2 PCIe 3.0 x4 - NVM Express (NVMe) | 256 GB SSD M.2 PCIe - NVM Express (NVMe) - Samsung |
|---|
| AUDIO & VIDEO | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | AMD Radeon Vega 8 |
|---|---|---|
| Camera | Yes - HD | Yes - 720p |
| Resolution | 0.92 Megapixel | 1 Megapixel |
| Camera Features | 78.6 degrees, RGB camera | - |
| Image Sensor Type | CMOS | - |
| Video Resolutions | 1280 x 720 | - |
| Frame Rate | 30 frames per second | - |
| Sound | Stereo speakers, microphone | Speakers, dual array microphone |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Atmos |
| Audio Features | - | JBL |
| COMMUNICATIONS | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Wireless | Bluetooth, 802.11a/b/g/n/ac | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | M.2 2230 | Qualcomm 435-AC - M.2 Card |
| BATTERY | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Technology | 3-cell lithium polymer | 4-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 41 Wh | 48 Wh |
| Battery Life | - | Up to 8 hours |
| AC ADAPTER | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 19.5 V, 3.34 A | 45 Watt, 5 / 9 / 15 / 20 V |
| INPUT | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | - | Yes |
| Features | - | Multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Interfaces | HDMI USB 2.0 2 x USB 3.2 Gen 1 Headphone/microphone combo jack |
USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 3.1 Gen 1 (Power Delivery) USB-C 3.1 Gen 1 (supports DisplayPort 1.2a, VGA, HDMI) (Power Delivery) Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (SD Card, SDHC Card, SDXC Card) | - |
| SOFTWARE | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition in S mode | Windows 10 Home 64-bit Edition |
|---|---|---|
| Software Included | Microsoft Office (30 days trial, excludes office licence) | - |
| MISCELLANEOUS | Dell Inspiron 15 3511 | Lenovo IdeaPad 720S-13ARR (Lenovo IdeaPad 720S) |
|---|
| Included Accessories | Power adapter | USB-C power adapter |
|---|---|---|
| Security | - | Fingerprint reader |
| Features | - | Administrator password, hard drive password, power-on password |
| Compliant Standards | - | RoHS |
| ENERGY STAR Certified | Yes | Yes |
| Max Operating Temperature | 40 °C | - |
| Min Operating Temperature | 0 °C | - |
| Humidity Range Operating | 10 - 90% (non-condensing) | - |
| Model Number | - | 13ARR 81BR |
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