Acer Extensa 15 (EX215-51) vs. Lenovo IdeaPad S540-15IML (81NG)

Laptop Comparison, Reviews and Tests

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.

Acer Extensa 15 (EX215-51) Review

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

Lenovo IdeaPad S540-15IML (81NG) Review

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

Laptop Comparison and Tests

Difference between Acer Extensa 15 (EX215-51) and Lenovo IdeaPad S540-15IML (81NG)
72 % - Design
63 % - Display
65 % - Performance
73 % - Connectivity
74 % - Battery
82 % - Design
72 % - Display
75 % - Performance
75 % - Connectivity
75 % - Battery

Laptop Specifications Comparison

Acer Extensa 15 (EX215-51) vs. Lenovo IdeaPad S540-15IML (81NG) Comparison Chart
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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