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.
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
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
DESIGN AND DIMENSIONS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo ThinkPad E15 Gen 4 (21E6) |
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Product Type | Notebook | Notebook |
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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) |
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Screen Size (Type) | 13.3" - IPS | 15.6" - IPS |
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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) |
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CPU | Intel Core i5 (10th Gen) 10210U / 1.6 GHz | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
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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) |
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RAM | 8 GB (1 x 8 GB) | 8 GB (provided memory is soldered) |
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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) |
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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) |
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AUDIO & VIDEO | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo ThinkPad E15 Gen 4 (21E6) |
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Graphics Processor (GPU) | Intel UHD Graphics | Intel Iris Xe Graphics |
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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) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
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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) |
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Technology | Lithium Ion | Lithium polymer |
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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) |
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Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 65 Watt | 65 Watt |
INPUT | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo ThinkPad E15 Gen 4 (21E6) |
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Type | Keyboard, touchpad | Keyboard, TrackPoint, UltraNav |
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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) |
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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 |
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SOFTWARE | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo ThinkPad E15 Gen 4 (21E6) |
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Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 11 Pro - English |
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Software Included | Microsoft Office (30 days trial) | - |
MISCELLANEOUS | Lenovo ThinkBook 13s-IML (Lenovo ThinkBook 13s) | Lenovo ThinkPad E15 Gen 4 (21E6) |
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Included Accessories | USB-C power adapter | USB-C power adapter |
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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 | - |