| Attribute |
Lenovo ThinkPad X1 Carbon + USB-C Dock (20KHS03L00-DOCK) × | 
Toshiba Portégé X30-D-15H (PT272E-05E00SGR) × |
| General | | |
| Model | Lenovo ThinkPad X1 Carbon + USB-C Dock | Toshiba Portégé X30-D-15H |
| Product code | 20KHS03L00-DOCK | PT272E-05E00SGR |
| Design | | |
| Product colour | Black | Blue |
| Form factor | Clamshell | Clamshell |
| Brand | Lenovo | Toshiba |
| Family | ThinkPad | Portégé |
| Series | X | - |
| Model name | X1 Carbon + USB-C Dock | X30-D-15H |
| Part number | 20KHS03L00-DOCK | PT272E-05E00SGR |
| Market positioning | Business | - |
| Release year (year) | 2019 | 2018 |
| Processor | | |
| Processor manufacturer | Intel | Intel |
| Processor family | 8th gen Intel Core i7 | 7th gen Intel Core i7 |
| Processor frequency (GHz) | 1.8 | 2.7 |
| Processor boost frequency (GHz) | 4 | 3.5 |
| Processor model | i7-8550U | i7-7500U |
| Processor cores | 4 | 2 |
| Processor threads | 8 | 4 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | BGA 1356 | BGA 1356 |
| Processor cache (MB) | 8 | 4 |
| Memory | | |
| Internal memory type | LPDDR3-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 16 | 32 |
| Memory clock speed (MHz) | 2,133 | 2,133 |
| Internal memory (GB) | 16 | 16 |
| Display | | |
| Display diagonal (inch) | 14 | 13.3 |
| Panel type | IPS | - |
| HD type | Full HD | Full HD |
| LED backlight | + | + |
| Touchscreen | + | + |
| Display resolution | 1920 x 1080 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter | - | - |
| On-board graphics adapter base frequency (MHz) | 300 | 300 |
| Maximum on-board graphics adapter memory (GB) | 32 | 32 |
| On-board graphics adapter model | Intel UHD Graphics 620 | Intel HD Graphics 620 |
| Storage | | |
| Total storage capacity (GB) | 512 | 512 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 512 | 512 |
| Card reader integrated | + | + |
| SSD form factor | - | M.2 |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | - 802.11a
- 802.11b
- 802.11g
- wi-fi 4 (802.11n)
- wi-fi 5 (802.11ac)
| - 802.11a
- 802.11g
- wi-fi 4 (802.11n)
- wi-fi 5 (802.11ac)
|
| Bluetooth | + | + |
| Ethernet LAN | - | + |
| Wi-Fi | + | - |
| Bluetooth version | 4.1 | 4.2 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 1 |
| USB 3.x Type-C ports | 2 | 2 |
| Combo headphone/mic port | + | + |
| USB Sleep-and-Charge | + | - |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | - | 1 |
| Audio | | |
| Speaker power (W) | 1 | - |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera HD type | HD | - |
| Keyboard | | |
| Numeric keypad | - | - |
| Keyboard backlit | + | + |
| Pointing device | ThinkPad UltraNav | Clickpad |
| Software | | |
| Operating system installed | - | Windows 10 Pro |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 57 | 48 |
| Battery life (max) (h) | 19.3 | - |
| Weight and dimensions | | |
| Weight (kg) | 1.13 | - |
| Height (mm) | 15.9 | 15.9 |
| Depth (mm) | 217.1 | 227 |
| Width (mm) | 323.5 | 316 |
| Security | | |
| Cable lock slot | + | + |
| Fingerprint reader | + | + |