Lenovo ThinkBook 14-IIL (20SL) vs. Lenovo ThinkBook 15-IIL (20SM)

Laptop Comparison, Reviews and Tests
Lenovo ThinkBook 15-IIL (20SM)
Lenovo ThinkBook 15-IIL (20SM)

Our Rating: 75 %

In depth comparison and review of Lenovo ThinkBook 14-IIL (20SL) and Lenovo ThinkBook 15-IIL (20SM). 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.

Lenovo ThinkBook 14-IIL (20SL) Review

Advantages and disadvantages of Lenovo ThinkBook 14-IIL (20SL) based on its technical characteristics, features, user experience, expert reviews and price level.

solid build quality

responsive keyboard

affordable price

adequate performance

decent battery life

average display quality

limited graphics power

no thunderbolt support

modest storage capacity

Lenovo ThinkBook 15-IIL (20SM) Review

Advantages and disadvantages of Lenovo ThinkBook 15-IIL (20SM) based on its technical characteristics, features, user experience, expert reviews and price level.

affordable price point

solid build quality

decent battery life

good processor performance

adequate storage options

average display quality

limited graphics capability

no thunderbolt support

heavier design

Laptop Comparison and Tests

Difference between Lenovo ThinkBook 14-IIL (20SL) and Lenovo ThinkBook 15-IIL (20SM)
86 % - Design
72 % - Display
75 % - Performance
78 % - Connectivity
75 % - Battery
78 % - Design
72 % - Display
72 % - Performance
78 % - Connectivity
74 % - Battery

Laptop Specifications Comparison

Lenovo ThinkBook 14-IIL (20SL) vs. Lenovo ThinkBook 15-IIL (20SM) Comparison Chart
DESIGN AND DIMENSIONS Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Product Type Notebook Notebook
Dimensions (WxDxH) 32.6 cm x 23 cm x 1.79 cm 36.4 cm x 24.5 cm x 1.89 cm
Weight 1.5 kg 1.8 kg
Case Material Aluminum Aluminum, polycarbonate ABS
Colour Mineral grey Mineral grey
DISPLAY Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Screen Size (Type) 14" - IPS 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 250 cd/m² 250 cd/m²
Features Anti-glare Anti-glare
PROCESSOR Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
CPU Intel Core i5 (10th Gen) 1035G4 / 1.1 GHz Intel Core i5 (10th Gen) 1035G1 / 1 GHz
Max Turbo Speed 3.7 GHz 3.6 GHz
Number of Cores Quad-Core Quad-Core
Cache 6 MB 6 MB
64-bit Computing Yes Yes
Features Integrated memory controller Integrated memory controller
MEMORY Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
RAM 8 GB (1 x 8 GB) 8 GB (1 x 8 GB)
Max RAM Supported 16 GB 16 GB
RAM Type DDR4 SDRAM DDR4 SDRAM
Speed 2666 MHz 2666 MHz
Rated Speed 2666 MHz 2666 MHz
Form Factor SO-DIMM 260-pin SO-DIMM 260-pin
Slots Qty 1 1
Empty Slots 0 0
STORAGE Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Main Storage Size (HDD/SSD) 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe)
AUDIO & VIDEO Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Graphics Processor (GPU) Intel Iris Plus Graphics Intel UHD Graphics
Camera Yes - 720p Yes - 720p
Camera Features ThinkShutter camera privacy ThinkShutter camera privacy
Sound Stereo speakers, dual array microphone Stereo speakers, dual array microphone
Codec Realtek ALC3287 Realtek ALC3287
Compliant Standards High Definition Audio, Dolby Audio High Definition Audio, Dolby Audio
COMMUNICATIONS Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Wireless Bluetooth 5.0, 802.11a/b/g/n/ac/ax Bluetooth 5.0, 802.11a/b/g/n/ac/ax
Wireless Controller M.2 Card M.2 Card
Network Interface Gigabit Ethernet Gigabit Ethernet
Features - Dual stream (2x2)
BATTERY Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Technology Lithium Ion Lithium Ion
Battery Capacity (Size) 45 Wh 45 Wh
Battery Life Up to 9 hours Up to 9 hours
AC ADAPTER Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Input AC 120/230 V (50/60 Hz) AC 120/230 V (50/60 Hz)
Output 65 Watt 65 Watt
INPUT Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Type Keyboard, touchpad Keyboard, touchpad
Numeric Keypad - Yes
Keyboard Backlight Yes Yes
Features Spill-resistant, multi-touch touchpad, buttonless touchpad Spill-resistant, multi-touch touchpad, buttonless touchpad
CONNECTIONS & EXPANSIONS Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Interfaces USB 2.0 (hidden)
USB 3.1 Gen 1 (Always On)
USB 3.1 Gen 1
USB-C 3.1 Gen 1
USB-C 3.1 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery)
HDMI
Headphone/microphone combo jack
USB 2.0
USB 3.1 Gen 1 (Always On)
USB 3.1 Gen 1
USB-C 3.1 Gen 1
USB-C 3.1 Gen 2 (supports DisplayPort Alt Mode) (Power Delivery)
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 ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Operating System (OS) Windows 10 Pro 64-bit Edition - Spanish Windows 10 Pro 64-bit Edition - French
Software Included Microsoft Office (30 days trial) Microsoft Office (30 days trial)
MISCELLANEOUS Lenovo ThinkBook 14-IIL (20SL) Lenovo ThinkBook 15-IIL (20SM)
Included Accessories Power adapter Power adapter
Security Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader 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 Administrator password, hard drive password, power-on password, RapidCharge Administrator password, hard drive password, power-on password, RapidCharge, MIL-STD-810G tested
Compliant Standards RoHS, Energy-Related Products (ErP) Lot 3 RoHS, Energy-Related Products (ErP) Lot 3
Manufacturer Warranty Limited warranty - 1 year - pick-up and return Limited warranty - 1 year - pick-up and return
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