Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) vs. Lenovo ThinkPad E15 Gen 4 (21E6)

Laptop Comparison, Reviews and Tests

Side by side comparison and review of Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) and Lenovo ThinkPad E15 Gen 4 (21E6). 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.

Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Review

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

Lenovo ThinkPad E15 Gen 4 (21E6) Review

Advantages and disadvantages of Lenovo ThinkPad E15 Gen 4 (21E6) based on its technical characteristics, features, user experience, expert reviews and price level.

robust build quality

efficient performance

comfortable keyboard

good security features

reasonable price

average display quality

moderate battery life

limited graphics capability

no thunderbolt support

Laptop Comparison and Tests

Difference between Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) and Lenovo ThinkPad E15 Gen 4 (21E6)
81 % - Design
72 % - Display
75 % - Performance
85 % - Connectivity
75 % - Battery
85 % - Design
72 % - Display
75 % - Performance
85 % - Connectivity
75 % - Battery

Laptop Specifications Comparison

Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) vs. Lenovo ThinkPad E15 Gen 4 (21E6) Comparison Chart
DESIGN AND DIMENSIONS Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Product Type Notebook Notebook
Dimensions (WxDxH) 30.76 cm x 21.64 cm x 1.59 cm 36.5 cm x 24 cm x 1.89 cm
Weight 1.32 kg 1.7 kg
Case Material Aluminum Aluminium (top), polycarbonate ABS (bottom)
Colour Mineral grey Black
DISPLAY Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Screen Size (Type) 13.3" - 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 300 cd/m² 300 cd/m²
Colour Gamut - 45% NTSC
Features Anti-glare, 170° viewing angle, Dolby Vision Anti-glare, 170° viewing angle
PROCESSOR Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
CPU Intel Core i5 (10th Gen) 10210U / 1.6 GHz Intel Core i5 (12th Gen) 1235U / 1.3 GHz
Max Turbo Speed 4.2 GHz 4.4 GHz
Number of Cores Quad-Core 10-core
Cache 6 MB 12 MB
64-bit Computing Yes -
Features Integrated memory controller Integrated memory controller
MEMORY Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
RAM 8 GB (1 x 8 GB) 8 GB (provided memory is soldered)
Max RAM Supported 16 GB 40 GB
RAM Type DDR4 SDRAM DDR4 SDRAM
Speed 2666 MHz 3200 MHz
Rated Speed 2666 MHz 3200 MHz
Form Factor SO-DIMM 260-pin SO-DIMM 260-pin
Slots Qty 1 1
Empty Slots 0 1
STORAGE Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
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 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe)
AUDIO & VIDEO Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Graphics Processor (GPU) Intel UHD Graphics Intel Iris Xe Graphics
Max Monitors Supported - 2 external monitor(s)
Camera Yes - 720p Yes - 1080p
Camera Features ThinkShutter camera privacy Privacy shutter, IR camera, Windows Hello, fixed focus
Sound Stereo speakers, dual array microphone Stereo speakers, dual array microphone
Codec - Realtek ALC3287
Compliant Standards High Definition Audio, Dolby Audio X3 High Definition Audio, Dolby Audio
Audio Features Harman audio technology Harman-branded
COMMUNICATIONS Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Wireless 802.11a/b/g/n/ac, Bluetooth 5.0 802.11a/b/g/n/ac/ax, Bluetooth 5.2
Wireless Controller M.2 Card M.2 Card
Network Interface - Gigabit Ethernet
Ethernet Controller - Intel I219-V
Features Dual stream (2x2) Wake-on-LAN (WOL), dual stream (2x2)
BATTERY Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Technology Lithium Ion Lithium polymer
Battery Capacity (Size) 45 Wh 57 Wh
Battery Life Up to 11 hours Up to 15.6 hours
AC ADAPTER Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Input AC 120/230 V (50/60 Hz) AC 100-240 V (50/60 Hz)
Output 65 Watt 65 Watt
INPUT Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Type Keyboard, touchpad Keyboard, TrackPoint, UltraNav
Numeric Keypad - Yes
Keyboard Backlight Yes Yes
Features Multi-touch touchpad, buttonless touchpad Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls
CONNECTIONS & EXPANSIONS Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
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 2.0
USB 3.2 Gen 1 (Always On)
USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0)
HDMI
LAN
Headphone/microphone combo jack
SOFTWARE Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Operating System (OS) Windows 10 Home 64-bit Edition - English Windows 11 Pro - English
Software Included Microsoft Office (30 days trial) -
MISCELLANEOUS Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) Lenovo ThinkPad E15 Gen 4 (21E6)
Included Accessories USB-C power adapter USB-C power adapter
Security Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader Discrete 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, power-on password, MIL-STD-810H tested, self-healing BIOS, NVMe password
Compliant Standards RoHS, Energy-Related Products (ErP) Lot 3 RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified, TUV Rheinland Low Blue Light (Software Solution)
SAR Value 0.568 W/kg (body), 0.568 W/kg (limb) -
ENERGY STAR Certified Yes Yes
EPEAT Compliant - EPEAT Gold
Max Operating Temperature - 35 °C
Min Operating Temperature - 5 °C
Humidity Range Operating - 8 - 95%
Manufacturer Warranty Limited warranty - 3 years - pick-up and return Base warranty - 1 year - pick-up and return
Extended warranty - 1 year - on-site
Model Number IML 20RR -
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