Side by side comparison and review of Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) and Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145). Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.
DESIGN AND DIMENSIONS | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 32.3 cm x 22.7 cm x 1.59 cm | 36.22 cm x 25.15 cm x 1.99 cm |
Weight | 1.5 kg | 1.85 kg |
Case Material | Aluminum, polycarbonate ABS | Polycarbonate ABS |
Colour | Mineral grey | Copper | Granite black IMR |
DISPLAY | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Screen Size (Type) | 14" - IPS | 15.6" - TN |
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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 | 250 cd/m² | 220 cd/m² |
Colour Gamut | 45% | - |
Features | Anti-glare | Anti-glare |
PROCESSOR | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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CPU | AMD Ryzen 5 3500U / 2.1 GHz | AMD A9 9425 / 3.1 GHz |
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Max Turbo Speed | 3.7 GHz | 3.7 GHz |
Number of Cores | Quad-Core | Dual-Core |
Cache | L3 - 4 MB | 1 MB |
64-bit Computing | Yes | Yes |
Features | Integrated memory controller | Integrated memory controller |
MEMORY | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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RAM | 8 GB (1 x 4 GB + 4 GB (soldered)) | 4 GB (1 x 4 GB) |
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Max RAM Supported | 12 GB | 8 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 2400 MHz | 2133 MHz |
Rated Speed | 2400 MHz | 2133 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 1 |
Empty Slots | 0 | 0 |
STORAGE | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) | 128 GB SSD 2.5" (7 mm) SATA 6Gb/s |
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AUDIO & VIDEO | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Graphics Processor (GPU) | AMD Radeon Vega 8 | AMD Radeon R5 |
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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 S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
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Wireless Controller | M.2 Card | M.2 Card |
Features | Dual stream (2x2) | Single stream (1x1) |
BATTERY | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Technology | Lithium Ion | Lithium Ion |
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Battery Capacity (Size) | 45 Wh | 30 Wh |
Battery Life | Up to 9 hours | Up to 4 hours |
AC ADAPTER | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
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Output | 65 Watt | 45 Watt |
INPUT | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Type | Keyboard, touchpad | Keyboard, touchpad |
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Numeric Keypad | - | Yes |
Keyboard Backlight | Yes | - |
Features | Multi-touch touchpad, buttonless touchpad | Multi-touch touchpad, buttonless touchpad |
CONNECTIONS & EXPANSIONS | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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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 |
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Memory Card Reader | 4 in 1 (MultiMediaCard, microSD, microSDHC, microSDXC) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
SOFTWARE | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Home in S mode - English |
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Software Included | Microsoft Office (30 days trial) | Microsoft Office (Trial) |
MISCELLANEOUS | Lenovo IdeaPad S540-14API (Lenovo IdeaPad S540) | Lenovo IdeaPad S145-15AST (Lenovo IdeaPad S145) |
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Included Accessories | Power adapter | Power adapter |
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Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Firmware Trusted Platform Module (TPM 2.0) Security Chip |
Features | Administrator 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 | 0.58 W/kg (body), 0.58 W/kg (limb) | - |
ENERGY STAR Certified | Yes | Yes |
Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | Limited warranty - 1 year - pick-up and return |
Model Number | 14API 81NH | 15AST 81N3 |