In depth comparison and review of Lenovo ThinkPad E15 Gen 2 (20TE) and Lenovo IdeaPad S145-15API (81UT). 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 Lenovo ThinkPad E15 Gen 2 (20TE) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
good security features
decent battery life
affordable price point
average display quality
modest graphics performance
no thunderbolt support
heavier design
Advantages and disadvantages of Lenovo IdeaPad S145-15API (81UT) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
lightweight design
decent processor performance
sufficient connectivity options
simple user interface
average display quality
limited battery life
modest graphics capability
no backlight keyboard
| DESIGN AND DIMENSIONS | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 36.5 cm x 24 cm x 1.89 cm | 36.22 cm x 25.15 cm x 1.99 cm |
| Weight | 1.7 kg | 1.85 kg |
| Case Material | Aluminium (top), polycarbonate ABS (bottom) | Polycarbonate ABS |
| Colour | Black | Granite black IMR |
| DISPLAY | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Screen Size (Type) | 15.6" - TN | 15.6" - TN |
|---|---|---|
| LCD Backlight Technology | - | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1366 x 768 (HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 220 cd/m² | 220 cd/m² |
| Colour Gamut | 45% NTSC | - |
| Features | Anti-glare, 90° viewing angle | Anti-glare |
| PROCESSOR | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| CPU | Intel Core i5 (11th Gen) 1135G7 / 2.4 GHz | AMD Ryzen 3 3200U / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.2 GHz | 3.5 GHz |
| Number of Cores | Quad-Core | Dual-Core |
| Cache | 8 MB | L3 - 4 MB |
| 64-bit Computing | - | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| RAM | 8 GB (1 x 8 GB) | 4 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 32 GB | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 3200 MHz | 2400 MHz |
| Rated Speed | 3200 MHz | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 1 |
| Empty Slots | 0 | 1 |
| STORAGE | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 3.0 x4 - Samsung | 128 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Graphics Processor (GPU) | NVIDIA GeForce MX450 / Intel Iris Xe Graphics | AMD Radeon Vega 3 |
|---|---|---|
| Max Monitors Supported | 2 external monitor(s) | - |
| Video Memory | 2 GB GDDR5 SDRAM | - |
| Camera | Yes - 720p | Yes |
| Resolution | - | 0.3 Megapixel |
| Camera Features | Privacy shutter, fixed focus | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, microphone |
| Codec | Realtek ALC3287 | - |
| Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio |
| Audio Features | Harman audio technology | - |
| COMMUNICATIONS | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.1 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6 AX 201 - M.2 Card | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Realtek RTL8111H-CG | - |
| Features | Wake-on-LAN (WOL), dual stream (2x2) | Single stream (1x1) |
| BATTERY | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Technology | 3-cell lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 45 Wh | 30 Wh |
| Battery Life | Up to 10.8 hours | Up to 4 hours |
| AC ADAPTER | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Slots | 1 x M.2 (PCI Express 3.0 x4) (1 free) | - |
|---|---|---|
| Interfaces | USB 2.0 USB 3.2 Gen 1 (Always On) USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
USB 2.0 2 x USB 3.1 Gen 1 HDMI Headphone/microphone combo jack |
| Memory Card Reader | - | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition | Windows 10 Home in S mode - English |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo ThinkPad E15 Gen 2 (20TE) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Included Accessories | USB-C power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Firmware Trusted Platform Module (TPM 2.0) 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, RapidCharge, MIL-STD-810H tested, self-healing BIOS | Administrator password, hard drive password, power-on password |
| Compliant Standards | RoHS, TUV Rheinland Low Blue Light Certification, Energy-Related Products (ErP) Lot 3, TCG Certified | RoHS, Energy-Related Products (ErP) Lot 3 |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Gold | - |
| Max Operating Temperature | 35 °C | - |
| Min Operating Temperature | 5 °C | - |
| Humidity Range Operating | 8 - 95% | - |
| Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |
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