In depth comparison and review of Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) and Lenovo IdeaPad 520-15IKB (81BF). 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 ThinkBook 13s-IML (Lenovo ThinkBook 13s) based on its technical characteristics, features, user experience, expert reviews and price level.
slim lightweight design
fast ssd storage
good battery life
comfortable keyboard
decent display quality
average graphics performance
no thunderbolt support
limited port selection
mediocre speaker quality
Advantages and disadvantages of Lenovo IdeaPad 520-15IKB (81BF) based on its technical characteristics, features, user experience, expert reviews and price level.
robust metal design
crisp full HD display
backlit keyboard feature
adequate processing power
reasonable price point
average battery life
limited graphics performance
heavier than competitors
no USB-C port
DESIGN AND DIMENSIONS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 30.76 cm x 21.64 cm x 1.59 cm | 37.8 cm x 26 cm x 2.2 cm |
Weight | 1.32 kg | 2.2 kg |
Case Material | Aluminum | Metal |
Colour | Mineral grey | Golden |
DISPLAY | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Screen Size (Type) | 13.3" - IPS | 15.6" - IPS |
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LCD Backlight Technology | LED backlight | - |
Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:9 |
Image Brightness | 300 cd/m² | 250 cd/m² |
Features | Anti-glare, 170° viewing angle, Dolby Vision | Anti-glare |
PROCESSOR | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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CPU | Intel Core i5 (10th Gen) 10210U / 1.6 GHz | Intel Core i5 (8th Gen) 8550U / 1.8 GHz |
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Max Turbo Speed | 4.2 GHz | 4 GHz |
Number of Cores | Quad-Core | Quad-Core |
Cache | 6 MB | 8 MB |
64-bit Computing | Yes | - |
Features | Integrated memory controller | Integrated memory controller |
MEMORY | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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RAM | 8 GB (1 x 8 GB) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
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Max RAM Supported | 16 GB | 16 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 2666 MHz | 2133 MHz |
Rated Speed | 2666 MHz | 2400 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 1 |
Empty Slots | 0 | 0 |
STORAGE | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) | 2 TB HDD SATA 6Gb/s / 5400 rpm |
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Optical Drive | - | DVD±RW |
AUDIO & VIDEO | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
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Graphics Processor (GPU) | Intel UHD Graphics | NVIDIA GeForce MX150 / Intel UHD Graphics 620 |
Video Memory | - | 4 GB GDDR5 SDRAM |
Camera | Yes - 720p | Yes - 720p |
Resolution | - | 1 Megapixel |
Camera Features | ThinkShutter camera privacy | Fixed focus |
Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
Compliant Standards | High Definition Audio, Dolby Audio X3 | High Definition Audio, Dolby Audio |
Audio Features | Harman audio technology | Output: Harman audio technology |
COMMUNICATIONS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
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Wireless Controller | M.2 Card | M.2 Card |
Network Interface | - | Gigabit Ethernet |
Features | Dual stream (2x2) | Single stream (1x1) |
BATTERY | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Technology | Lithium Ion | 2-cell lithium polymer |
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Battery Capacity (Size) | 45 Wh | 35 Wh |
Battery Life | Up to 11 hours | Up to 6 hours |
AC ADAPTER | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 65 Watt | 65 Watt |
INPUT | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Type | Keyboard, touchpad | Keyboard, touchpad |
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Numeric Keypad | - | Yes |
Keyboard Backlight | Yes | Yes |
Features | Multi-touch touchpad, buttonless touchpad | - |
CONNECTIONS & EXPANSIONS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Interfaces | USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 3.1 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery) HDMI Headphone/microphone combo jack |
USB-C 3.0 2 x USB 3.0 HDMI LAN Headphone/microphone combo jack |
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Memory Card Reader | - | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
SOFTWARE | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Home 64-bit Edition - English |
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Software Included | Microsoft Office (30 days trial) | - |
MISCELLANEOUS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo IdeaPad 520-15IKB (81BF) |
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Included Accessories | USB-C power adapter | Power adapter |
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Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Fingerprint reader |
Security Slot Type | - | Kensington mini security slot |
Theft/Intrusion Protection | - | Security lock slot (cable lock sold separately) |
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 |
SAR Value | 0.568 W/kg (body), 0.568 W/kg (limb) | - |
ENERGY STAR Certified | Yes | - |
Manufacturer Warranty | Limited warranty - 3 years - pick-up and return | Limited warranty - 1 year - pick-up and return |
Model Number | IML 20RR | - |