| Processor | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Processor model | i5-7200U | i5-6200U |
| Processor socket | BGA 1356 | LGA 1356 (Socket B2) |
| Processor series | | Intel Core i5-6200 series |
| Processor threads | 4 | 4 |
| Processor cores | 2 | 2 |
| Processor codename | Kaby Lake | Skylake |
| Processor family | 7th gen Intel Core i5 | 6th gen Intel Core i5 |
| Processor frequency | 2.50 GHz | 2.3 GHz |
| Processor boost frequency | 3.10 GHz | 2.8 GHz |
| Processor cache | 3 MB | 3 MB |
| Thermal Design Power (TDP) | 15 W | 15 W |
| Software | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Operating system installed | Windows 10 Home | Windows 10 Pro |
| Drivers included | Yes | |
| Operating system architecture | 64-bit | 64-bit |
| Display & Graphics | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Panel type | IPS | IPS |
| Aspect ratio | 16:9 | 16:9 |
| Display diagonal | 15.6 inch | 15.6 inch |
| Display resolution | 1920 x 1080 pixels | 1920 x 1080 pixels |
| Dual-screen | No | |
| HD type | Full HD | Full HD |
| LED backlight | Yes | Yes |
| Pixel pitch | 0.17925 x 0.17925 mm | |
| Touchscreen | Yes | No |
| Discrete graphics adapter | No | No |
| Number of displays supported | | 3 |
| Discrete graphics adapter model | Not available | Not available |
| Maximum on-board graphics adapter memory | 32 GB | 1.74 GB |
| On-board graphics adapter | Yes | Yes |
| On-board graphics adapter base frequency | 300 MHz | 300 MHz |
| On-board graphics adapter DirectX version | 12.0 | |
| On-board graphics adapter dynamic frequency (max) | 1000 MHz | 1000 MHz |
| On-board graphics adapter family | Intel HD Graphics | Intel HD Graphics |
| On-board graphics adapter model | Intel HD Graphics 620 | Intel HD Graphics 520 |
| On-board graphics adapter OpenGL | 4.4 | 4.4 |
| Memory | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Internal memory | 8 GB | 8 GB |
| Maximum internal memory | 16 GB | 16 GB |
| Memory layout (slots x size) | | 1 x 8 GB |
| Memory clock speed | 2400 MHz | 1600 MHz |
| Memory form factor | SO-DIMM | |
| Memory slots | 2x SO-DIMM | 2x SO-DIMM |
| Internal memory type | DDR4-SDRAM | DDR3L-SDRAM |
| Storage | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| SSD capacity | | 256 GB |
| HDD capacity | 1000 GB | |
| Number of SSDs installed | | 1 |
| HDD interface | SATA III | |
| HDD size | 2.5" | |
| HDD speed | 5400 RPM | |
| Storage media | HDD | SSD |
| Number of HDDs installed | 1 | |
| Total storage capacity | 1000 GB | 256 GB |
| Optical drive type | No | DVD Super Multi DL |
| Card reader integrated | Yes | Yes |
| Compatible memory cards | SD | MMC, SD, SDHC, SDXC |
| Network & Communication | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Bluetooth version | | 4.1 |
| 3G | No | No |
| 4G | No | No |
| Wi-Fi standards | | IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n |
| Bluetooth | Yes | Yes |
| Ethernet LAN | No | Yes |
| Wi-Fi | Yes | Yes |
| Interfaces/Ports | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Headphone outputs | | 1 |
| HDMI ports quantity | 1 | 1 |
| DC-in jack | | Yes |
| Charging port type | DC-in jack | |
| VGA (D-Sub) ports | | 1 |
| Combo headphone/mic port | Yes | Yes |
| Docking connector | No | Yes |
| Ethernet LAN (RJ-45) ports | | 1 |
| DVI port | No | |
| Microphone in | | Yes |
| USB 2.0 | 1 | |
| USB 3.0 (3.1 Gen 1) Type-A | 2 | 4 |
| USB Sleep-and-Charge | 1 | 1 |
| Input Devices | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Full-size keyboard | Yes | |
| Keyboard number of keys | | 102 |
| Keyboard backlit | Yes | Yes |
| Numeric keypad | No | Yes |
| Pointing device | Touchpad | Clickpad |
| Windows keys | Yes | Yes |
| Audio | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Audio chip | Realtek ALC3253 | |
| Audio system | MaxxAudio Pro | DTS Studio Sound |
| Built-in microphone | Yes | Yes |
| Number of speakers | 2 | |
| Speaker power | 2 W | |
| Built-in Devices | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Front camera | Yes | Yes |
| Front camera resolution | 1280 x 720 pixels | |
| Video capturing speed | 30 fps | |
| Power | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| AC adapter output current | | 2.37 A |
| AC adapter frequency | 50/60 Hz | |
| AC adapter input voltage | 100 - 240 V | 100 - 240 V |
| AC adapter output voltage | 19.5 V | 19 V |
| Security | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Fingerprint reader | | Yes |
| Cable lock slot | Yes | Yes |
| Cable lock slot type | Noble | Kensington |
| Design | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Brand | DELL | Toshiba |
| Family | Inspiron | Tecra |
| Colour of product | | Metallic |
| Series | 5000 | |
| Model name | 15 | Z50-C-143 |
| Part Number | I5578-2451GRY | PT571E-06H03QEN |
| Product type | Hybrid (2-in-1) | Notebook |
| Form factor | Convertible (Folder) | Clamshell |
| Product colour | Black, Grey | |
| Depth | 253.1 mm | 258 mm |
| Width | 380.9 mm | 379 mm |
| Height | 20.2 mm | 23.2 mm |
| Weight | 2.09 kg | 2.2 kg |
| Release Date | 2016-09-18 | 2018-01-10 |
| Battery Information | DELL Inspiron 15 I5578-2451GRY | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Battery life | | 8 h |
| Battery capacity | 42 mAh | |
| Battery type | Lithium-Ion (Li-Ion) | Lithium-Ion (Li-Ion) |
| Battery voltage | 11.4 V | |
| Number of battery cells | 3 | 4 |
