| Attribute |
Lenovo IdeaPad 720S (81BD000UIX) × | 
Lenovo ThinkPad X1 Carbon (20R1A003CD) × |
| General | | |
| Model | Lenovo IdeaPad 720S | Lenovo ThinkPad X1 Carbon |
| Product code | 81BD000UIX | 20R1A003CD |
| Design | | |
| Product colour | Silver | Black |
| Form factor | Clamshell | Clamshell |
| Brand | Lenovo | Lenovo |
| Family | IdeaPad | ThinkPad |
| Series | 700 | X |
| Model name | 720S | X1 Carbon |
| Part number | 81BD000UIX | 20R1A003CD |
| Release year (year) | 2017 | 2020 |
| Processor | | |
| Processor manufacturer | - | Intel |
| Processor family | 8th gen Intel Core i7 | 10th gen Intel Core i5 |
| Processor frequency (GHz) | 1.8 | 1.6 |
| Processor boost frequency (GHz) | 4 | 4.2 |
| Processor model | i7-8550U | i5-10210U |
| Processor cores | 4 | 4 |
| Processor threads | 8 | 8 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | BGA 1356 | BGA 1528 |
| Processor cache (MB) | 8 | 6 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | LPDDR3-SDRAM |
| Maximum internal memory (GB) | 16 | 16 |
| Memory clock speed (MHz) | 2,133 | 2,133 |
| Internal memory (GB) | 8 | 8 |
| Display | | |
| Display diagonal (inch) | 14 | 14 |
| Panel type | IPS | IPS |
| HD type | Full HD | Full HD |
| LED backlight | + | + |
| Touchscreen | - | - |
| Dual-screen | - | - |
| Display resolution | 1920 x 1080 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA GeForce MX150 | - |
| Discrete graphics memory type | GDDR5 | - |
| Discrete graphics adapter | + | - |
| Discrete graphics adapter memory (GB) | 2 | - |
| 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 UHD Graphics |
| 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 | - ieee 802.11a
- ieee 802.11ac
- ieee 802.11b
- ieee 802.11g
- ieee 802.11n
| |
| Bluetooth | + | + |
| Ethernet LAN | - | - |
| Wi-Fi | + | + |
| 4g | - | - |
| 3g | - | - |
| Bluetooth version | 4.1 | 5.1 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 2 |
| USB 3.x Type-C ports | 1 | 2 |
| Combo headphone/mic port | + | + |
| USB Sleep-and-Charge | + | + |
| HDMI ports quantity | 1 | 1 |
| Audio | | |
| Speaker power (W) | 1.5 | - |
| Audio chip | - | Realtek ALC3286 |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera resolution (numeric) (MPixel) | 1 | - |
| Front camera HD type | - | HD |
| Front camera resolution (pixels) | 1280 x 720 | - |
| Keyboard | | |
| Numeric keypad | - | - |
| Keyboard backlit | + | + |
| Full-size keyboard | - | - |
| Pointing device | Touchpad | ThinkPad UltraNav |
| Software | | |
| Operating system installed | Windows 10 Home | Windows 10 Home |
| Operating system architecture (bit) | 64 | 64 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 55 | 51 |
| Battery life (max) (h) | 14 | 18.3 |
| Weight and dimensions | | |
| Weight (kg) | 1.55 | 1.09 |
| Height (mm) | 15.9 | 14.9 |
| Depth (mm) | 222.8 | 217 |
| Width (mm) | 320.7 | 323 |
| Power | | |
| AC adapter power (W) | 65 | 65 |
| Security | | |
| Cable lock slot | - | + |
| Fingerprint reader | - | + |
| Trusted platform module (TPM) | - | + |