Side by side comparison and review of Acer Extensa 15 (EX215-51) and Lenovo IdeaPad S540-15IML (81NG). 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 Acer Extensa 15 (EX215-51) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
decent battery life
adequate performance
lightweight design
average display quality
limited storage capacity
no backlit keyboard
basic graphics capabilities
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 | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 36.34 cm x 25.05 cm x 1.99 cm | 35.8 cm x 24.5 cm x 1.69 cm |
| Weight | 1.9 kg | 1.95 kg |
| Case Material | - | Aluminum, glass |
| Colour | Shale black | Mineral grey |
| DISPLAY | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Screen Size (Type) | 15.6" | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | 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 | 220 cd/m² | 300 cd/m² |
| Colour Gamut | - | 72% |
| Features | Anti-glare, ComfyView, 8 ms response rate, Narrow Border Display | Glossy, glass cover |
| PROCESSOR | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| CPU | Intel Core i3 (10th Gen) 10110U / 2.1 GHz | Intel Core i5 (10th Gen) 10210U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 4.1 GHz | 4.2 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 4 MB | 6 MB |
| 64-bit Computing | Yes | Yes |
| Features | Intel Turbo Boost Technology 2.0 | Integrated memory controller |
| MEMORY | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| RAM | 4 GB (4 GB (soldered)) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
|---|---|---|
| Max RAM Supported | 12 GB | 12 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | - | 2400 MHz |
| Rated Speed | - | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 1 |
| Empty Slots | 1 | 0 |
| STORAGE | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD - Kingston | 512 GB SSD M.2 2280 PCIe 3.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | Intel UHD Graphics |
|---|---|---|
| Memory Allocation Technology | Shared Video Memory (UMA) | - |
| Camera | Yes - HD | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | - | Privacy shutter |
| Sound | Stereo speakers, two microphones | Stereo speakers, dual array microphone |
| Compliant Standards | - | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Wireless | Bluetooth, 802.11a/b/g/n/ac | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|---|---|
| Wireless Controller | - | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Features | Wake-on-LAN (WOL) | Dual stream (2x2) |
| BATTERY | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Technology | Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 48 Wh | 70 Wh |
| Battery Life | - | Up to 15 hours |
| AC ADAPTER | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt, 19 V | 65 Watt |
| INPUT | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | Yes |
| Keyboard Backlight | - | Yes |
| Features | Multi-gesture touch pad, Acer FineTip keyboard, precision touchpad | Multi-touch touchpad, buttonless touchpad |
| CONNECTIONS & EXPANSIONS | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Interfaces | HDMI USB 3.1 Gen 1 2 x USB 2.0 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) |
| SOFTWARE | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition in S mode | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | - | Microsoft Office (30 days trial) |
| MISCELLANEOUS | Acer Extensa 15 (EX215-51) | Lenovo IdeaPad S540-15IML (81NG) |
|---|
| Included Accessories | Power adapter, HDD kit | Power adapter |
|---|---|---|
| Security | - | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington security slot | - |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | - |
| Features | MU-MIMO technology | Administrator password, hard drive password, power-on password, RapidCharge |
| Compliant Standards | - | 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 - carry-in International travellers warranty - 1 year |
Limited warranty - 1 year - pick-up and return |
| Model Number | 39SK | - |
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