In depth comparison and review of Dell Inspiron 15 3511 and Lenovo ThinkPad T540p. 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
Advantages and disadvantages of Lenovo ThinkPad T540p based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
good performance levels
reliable security features
decent battery life
heavy and bulky
outdated design
mediocre display quality
limited graphics performance
| DESIGN AND DIMENSIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.85 cm x 23.556 cm x 1.89 cm | 37.6 cm x 24.8 cm x 2.77 cm |
| Weight | 1.73 kg | 2.49 kg |
| Case Material | - | Glass-fibre reinforced plastic |
| Colour | Carbon black | Black |
| DISPLAY | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Screen Size (Type) | 15.6" | 15.6" |
|---|---|---|
| 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 | - |
| 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 T540p |
|---|
| CPU | Intel Core i3 (11th Gen) 1115G4 / 3 GHz | Intel Core i5 (4th Gen) 4300U / 1.9 GHz |
|---|---|---|
| Max Turbo Speed | 4.1 GHz | 2.9 GHz |
| Number of Cores | Dual-Core | Dual-Core |
| Cache | 6 MB | 3 MB |
| 64-bit Computing | - | Yes |
| Features | Intel Turbo Boost Technology 2.0, Intel Smart Cache | Hyper-Threading Technology, integrated memory controller, Intel Turbo Boost Technology 2.0 |
| MEMORY | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| RAM | 4 GB (1 x 4 GB) | 8 GB |
|---|---|---|
| Max RAM Supported | 16 GB | 16 GB |
| RAM Type | DDR4 SDRAM | DDR3L SDRAM |
| Speed | 2666 MHz | - |
| Rated Speed | 2666 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 T540p |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD M.2 PCIe 3.0 x4 - NVM Express (NVMe) | 240 GB SSD |
|---|---|---|
| Optical Drive | - | DVD-Writer removable |
| AUDIO & VIDEO | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | Intel HD Graphics 4400 |
|---|---|---|
| Camera | Yes - HD | Yes - 720p |
| Resolution | 0.92 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 | Stereo speakers, dual array microphone |
| Codec | - | Realtek ALC3232 |
| Compliant Standards | High Definition Audio | High Definition Audio, Dolby Home Theater v4 |
| COMMUNICATIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Wireless | Bluetooth, 802.11a/b/g/n/ac | Bluetooth, Wi-Fi |
|---|---|---|
| Wireless Controller | M.2 2230 | - |
| Network Interface | - | Gigabit Ethernet |
| WWAN |
|---|
| Generation | - | WWAN upgradable |
|---|
| BATTERY | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Technology | 3-cell lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 41 Wh | - |
| AC ADAPTER | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 19.5 V, 3.34 A | - |
| INPUT | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Features | - | Spill-resistant, multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Slots | - | 1 x ExpressCard/34 (1 free) M.2 Card |
|---|---|---|
| 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 T540p |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition in S mode | Windows 10 Pro 64-bit Edition |
|---|---|---|
| Software Included | Microsoft Office (30 days trial, excludes office licence) | - |
| MISCELLANEOUS | Dell Inspiron 15 3511 | Lenovo ThinkPad T540p |
|---|
| Dockable | - | Yes |
|---|---|---|
| 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, ThinkPad Roll Cage, 1 USB 2.0 (Always On) |
| Compliant Standards | - | ISO 9001, ISO 14001, RoHS, ISO 27001 |
| ENERGY STAR Certified | Yes | Yes |
| Max Operating Temperature | 40 °C | - |
| Min Operating Temperature | 0 °C | - |
| Humidity Range Operating | 10 - 90% (non-condensing) | - |
| Manufacturer Warranty | - | Limited warranty - 2 years - pick-up and return |
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