| Attribute |
Lenovo IdeaPad S145 (81S9000EBR) × | 
Lenovo ThinkPad T590 (20N5S2DK0A) × |
| General | | |
| Model | Lenovo IdeaPad S145 | Lenovo ThinkPad T590 |
| Product code | 81S9000EBR | 20N5S2DK0A |
| Design | | |
| Product colour | Grey, Platinum | Black |
| Form factor | Clamshell | Clamshell |
| Brand | Lenovo | Lenovo |
| Family | IdeaPad | ThinkPad |
| Series | S | T |
| Model name | S145 | T590 |
| Part number | 81S9000EBR | 20N5S2DK0A |
| Release year (year) | 2020 | 2020 |
| Processor | | |
| Processor manufacturer | Intel | Intel |
| Processor family | 8th gen Intel Core i7 | 8th gen Intel Core i5 |
| Processor frequency (GHz) | 1.8 | 1.6 |
| Processor boost frequency (GHz) | 4.6 | 4.1 |
| Processor model | i7-8565U | i5-8365U |
| Processor cores | 4 | 4 |
| Processor threads | 8 | 8 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | BGA 1528 | BGA 1528 |
| Processor cache (MB) | 8 | 6 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 8 | - |
| Internal memory (GB) | 8 | 16 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | Full HD | - |
| LED backlight | + | + |
| Touchscreen | - | - |
| Dual-screen | - | - |
| Display resolution | 1920 x 1080 pixels | - |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA GeForce MX110 | - |
| 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 | Intel UHD Graphics 620 |
| Storage | | |
| Total storage capacity (GB) | 512 | 512 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 512 | 512 |
| Card reader integrated | + | + |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | | |
| Bluetooth | + | + |
| Ethernet LAN | - | + |
| Ethernet LAN data rates (Mbit/s) | - | |
| Wi-Fi | + | + |
| Bluetooth version | 4.2 | 5.0 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 2 |
| USB 3.x Type-C ports | - | 1 |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 1 | - |
| USB Sleep-and-Charge | - | + |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | - | 1 |
| Audio | | |
| Speaker power (W) | 1.5 | 2 |
| Audio chip | - | Realtek ALC3287 |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera resolution (numeric) (MPixel) | 0.3 | - |
| Front camera HD type | - | HD |
| Keyboard | | |
| Numeric keypad | + | + |
| Pointing device | Touchpad | ThinkPad UltraNav |
| Software | | |
| Operating system installed | Windows 10 Home | Windows 10 Pro |
| Operating system architecture (bit) | 64 | 64 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 35 | 57 |
| Battery life (max) (h) | 6 | - |
| Weight and dimensions | | |
| Weight (kg) | 1.85 | 1.75 |
| Height (mm) | 19.9 | 19.9 |
| Depth (mm) | 251.5 | 248 |
| Width (mm) | 362.2 | 365.8 |
| Security | | |
| Fingerprint reader | - | - |
| Trusted platform module (TPM) | + | + |