In depth comparison and review of Lenovo IdeaPad S540-15IML (81NG) 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 IdeaPad S540-15IML (81NG) based on its technical characteristics, features, user experience, expert reviews and price level.
sleek aluminum design
sharp full HD display
fast processing speeds
ample storage capacity
good battery life
heavier than competitors
no optical drive
limited port selection
average graphics performance
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 IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 35.8 cm x 24.5 cm x 1.69 cm | 36.22 cm x 25.15 cm x 1.99 cm |
| Weight | 1.95 kg | 1.85 kg |
| Case Material | Aluminum, glass | Polycarbonate ABS |
| Colour | Mineral grey | Granite black IMR |
| DISPLAY | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Screen Size (Type) | 15.6" - IPS | 15.6" - TN |
|---|---|---|
| LCD Backlight Technology | LED backlight | 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 | 300 cd/m² | 220 cd/m² |
| Colour Gamut | 72% | - |
| Features | Glossy, glass cover | Anti-glare |
| PROCESSOR | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| CPU | Intel Core i5 (10th Gen) 10210U / 1.6 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 | 6 MB | L3 - 4 MB |
| 64-bit Computing | Yes | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| RAM | 8 GB (1 x 4 GB + 4 GB (soldered)) | 4 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 12 GB | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2400 MHz | 2400 MHz |
| Rated Speed | 2400 MHz | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 1 |
| Empty Slots | 0 | 1 |
| STORAGE | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) | 128 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | AMD Radeon Vega 3 |
|---|---|---|
| Camera | Yes - 720p | Yes |
| Resolution | 1 Megapixel | 0.3 Megapixel |
| Camera Features | Privacy shutter | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, microphone |
| Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | M.2 Card | M.2 Card |
| Features | Dual stream (2x2) | Single stream (1x1) |
| BATTERY | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Technology | Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 70 Wh | 30 Wh |
| Battery Life | Up to 15 hours | Up to 4 hours |
| AC ADAPTER | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | Yes | - |
| Features | Multi-touch touchpad, buttonless touchpad | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Interfaces | USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 3.1 Gen 1 HDMI 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) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Home in S mode - English |
|---|---|---|
| Software Included | Microsoft Office (30 days trial) | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo IdeaPad S540-15IML (81NG) | Lenovo IdeaPad S145-15API (81UT) |
|---|
| Included Accessories | 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 |
| Features | Administrator password, hard drive password, power-on password, RapidCharge | Administrator password, hard drive password, power-on password |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3 | RoHS, Energy-Related Products (ErP) Lot 3 |
| SAR Value | 1.81 W/kg (body), 1.81 W/kg (limb) | - |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | Limited warranty - 1 year - pick-up and return |
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