Side by side comparison and review of Lenovo ThinkPad X390 and Lenovo IdeaPad S540-13API (81XC). 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.
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 S540-13API (81XC) based on its technical characteristics, features, user experience, expert reviews and price level.
slim, lightweight design
sharp, vibrant display
fast processing speed
good battery life
quiet operation
limited port selection
no optical drive
average graphics performance
higher price point
DESIGN AND DIMENSIONS | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 31.2 cm x 21.72 cm x 1.69 cm | 29.69 cm x 20.86 cm x 1.595 cm |
Weight | 1.33 kg | 1.25 kg |
Case Material | - | Aluminum, glass |
Colour | - | Light silver |
DISPLAY | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Screen Size (Type) | 13.3" - TN | 13.3" - IPS |
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LCD Backlight Technology | LED backlight | LED backlight |
Screen Resolution | 1366 x 768 (HD) | 2560 x 1600 (WQHD) |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:9 |
Image Brightness | 250 cd/m² | 300 cd/m² |
Colour Gamut | 45% | 100% sRGB, 72% NTSC |
Features | Anti-glare, 90° viewing angle | Glossy, 72% NTSC colour gamut |
PROCESSOR | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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CPU | Intel Core i5 (8th Gen) 8365U / 1.6 GHz | AMD Ryzen 7 3750H / 2.3 GHz |
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Max Turbo Speed | 4.1 GHz | 4 GHz |
Number of Cores | Quad-Core | Quad-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 S540-13API (81XC) |
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RAM | 8 GB | 8 GB (provided memory is soldered) |
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RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | - | 2400 MHz |
Rated Speed | - | 2400 MHz |
STORAGE | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Main Storage Size (HDD/SSD) | 256 GB SSD | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
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AUDIO & VIDEO | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Graphics Processor (GPU) | Intel UHD Graphics 620 | AMD Radeon RX Vega 10 |
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Camera | Yes - 720p | Yes - 720p |
Resolution | - | 1 Megapixel |
Camera Features | - | IR camera, fixed focus, ToF sensor |
Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
Codec | Realtek ALC3287 | - |
Compliant Standards | High Definition Audio, Dolby Audio Premium | High Definition Audio, Dolby Audio |
COMMUNICATIONS | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac, Bluetooth 5.0 |
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Wireless Controller | Intel Wireless-AC 9560 | M.2 Card |
Network Interface | Gigabit Ethernet | - |
Features | - | Dual stream (2x2) |
BATTERY | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Technology | Lithium Ion | Lithium Ion |
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Battery Capacity (Size) | - | 56 Wh |
Battery Life | - | Up to 14.7 hours |
AC ADAPTER | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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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 |
INPUT | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
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Keyboard Backlight | - | Yes |
Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | Multi-touch touchpad, buttonless touchpad |
CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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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 3.1 Gen 1 (Always On) 2 x USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) Headphone/microphone combo jack |
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Memory Card Reader | Yes (microSD) | - |
SOFTWARE | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Operating System (OS) | Windows 10 Pro (Microsoft Authorized Refurbisher (MAR)) | Windows 10 Home 64-bit Edition - English |
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Software Included | - | Microsoft Office (30 days trial) |
MISCELLANEOUS | Lenovo ThinkPad X390 | Lenovo IdeaPad S540-13API (81XC) |
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Dockable | Yes | - |
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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, RapidCharge |
Compliant Standards | ISO 9001, ISO 14001, ISO 27001 | RoHS, Energy-Related Products (ErP) Lot 3 |
SAR Value | - | 0.599 W/kg (body), 0.599 W/kg (limb) |
ENERGY STAR Certified | Yes | - |
Specific Absorption Rate (SAR) | - | 0.599 W/kg (body) 0.599 W/kg (limb) |
Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |