In depth comparison and review of Lenovo IdeaPad 520-15IKB (81BF) and Lenovo IdeaPad S540-15IML (81NG). 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 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
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
| DESIGN AND DIMENSIONS | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 37.8 cm x 26 cm x 2.2 cm | 35.8 cm x 24.5 cm x 1.69 cm |
| Weight | 2.2 kg | 1.95 kg |
| Case Material | Metal | Aluminum, glass |
| Colour | Golden | Mineral grey |
| DISPLAY | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Screen Size (Type) | 15.6" - IPS | 15.6" - IPS |
|---|---|---|
| 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 | 250 cd/m² | 300 cd/m² |
| Colour Gamut | - | 72% |
| Features | Anti-glare | Glossy, glass cover |
| PROCESSOR | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| CPU | Intel Core i5 (8th Gen) 8550U / 1.8 GHz | Intel Core i5 (10th Gen) 10210U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 4 GHz | 4.2 GHz |
| Number of Cores | Quad-Core | Quad-Core |
| Cache | 8 MB | 6 MB |
| 64-bit Computing | - | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| RAM | 8 GB (1 x 4 GB + 4 GB (soldered)) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 16 GB | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2133 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 | 0 |
| STORAGE | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Main Storage Size (HDD/SSD) | 2 TB HDD SATA 6Gb/s / 5400 rpm | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|---|---|
| Optical Drive | DVD±RW | - |
| AUDIO & VIDEO | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA GeForce MX150 / Intel UHD Graphics 620 | Intel UHD Graphics |
| Video Memory | 4 GB GDDR5 SDRAM | - |
| Camera | Yes - 720p | Yes - 720p |
| Resolution | 1 Megapixel | 1 Megapixel |
| Camera Features | Fixed focus | Privacy shutter |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio |
| Audio Features | Output: Harman audio technology | - |
| COMMUNICATIONS | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | M.2 Card | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Features | Single stream (1x1) | Dual stream (2x2) |
| BATTERY | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Technology | 2-cell lithium polymer | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 35 Wh | 70 Wh |
| Battery Life | Up to 6 hours | Up to 15 hours |
| AC ADAPTER | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | - | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Interfaces | USB-C 3.0 2 x USB 3.0 HDMI LAN Headphone/microphone combo jack |
USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB-C 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 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Lenovo IdeaPad 520-15IKB (81BF) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Fingerprint reader | Firmware Trusted Platform Module (TPM 2.0) Security Chip, 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 | Administrator password, hard drive password, power-on password, RapidCharge |
| Compliant Standards | RoHS | 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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