In depth comparison and review of Lenovo ThinkPad X390 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 X390 based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard comfort
impressive battery life
compact and portable
reliable performance
average display brightness
limited graphics capability
noisy under load
higher price point
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 X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 31.2 cm x 21.72 cm x 1.69 cm | 36.22 cm x 25.15 cm x 1.99 cm |
| Weight | 1.33 kg | 1.85 kg |
| Case Material | - | Polycarbonate ABS |
| Colour | - | Granite black IMR |
| DISPLAY | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Screen Size (Type) | 13.3" - TN | 15.6" - TN |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1366 x 768 (HD) | 1366 x 768 (HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 250 cd/m² | 220 cd/m² |
| Colour Gamut | 45% | - |
| Features | Anti-glare, 90° viewing angle | Anti-glare |
| PROCESSOR | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| CPU | Intel Core i5 (8th Gen) 8365U / 1.6 GHz | AMD Ryzen 3 3200U / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.1 GHz | 3.5 GHz |
| Number of Cores | Quad-Core | Dual-Core |
| Cache | 6 MB | L3 - 4 MB |
| 64-bit Computing | Yes | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| RAM | 8 GB | 4 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | - | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | - | 2400 MHz |
| Rated Speed | - | 2400 MHz |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD | 128 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | AMD Radeon Vega 3 |
|---|---|---|
| Camera | Yes - 720p | Yes |
| Resolution | - | 0.3 Megapixel |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, microphone |
| Codec | Realtek ALC3287 | - |
| Compliant Standards | High Definition Audio, Dolby Audio Premium | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | Intel Wireless-AC 9560 | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Features | - | Single stream (1x1) |
| BATTERY | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Technology | Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | - | 30 Wh |
| Battery Life | - | Up to 4 hours |
| AC ADAPTER | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | - | 65 Watt |
| INPUT | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Interfaces | USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) USB-C 3.1 Gen 2 (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery) HDMI Lenovo Ethernet extension connector Dock Headphone/microphone combo jack LAN (on supplied cable) |
USB 2.0 2 x USB 3.1 Gen 1 HDMI Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (microSD) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Operating System (OS) | Windows 10 Pro (Microsoft Authorized Refurbisher (MAR)) | Windows 10 Home in S mode - English |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo ThinkPad X390 | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | - | Power adapter |
| Security | - | 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 |
| Compliant Standards | ISO 9001, ISO 14001, ISO 27001 | RoHS, Energy-Related Products (ErP) Lot 3 |
| ENERGY STAR Certified | Yes | - |
| Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |
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