Side by side comparison and review of Lenovo ThinkPad E15 Gen 4 (21ED) and Lenovo ThinkBook 13s-IML (20RR). 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 ThinkPad E15 Gen 4 (21ED) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
efficient performance
comfortable keyboard
good security features
affordable price
average display quality
limited graphics power
moderate battery life
noisy under load
Advantages and disadvantages of Lenovo ThinkBook 13s-IML (20RR) based on its technical characteristics, features, user experience, expert reviews and price level.
slim, lightweight design
fast ssd storage
good battery life
decent processor performance
affordable price
average display quality
limited port selection
no dedicated gpu
mediocre speaker output
DESIGN AND DIMENSIONS | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 36.5 cm x 24 cm x 1.89 cm | 30.76 cm x 21.64 cm x 1.59 cm |
Weight | 1.78 kg | 1.32 kg |
Case Material | Aluminium (top), polycarbonate ABS (bottom) | Aluminum |
Colour | Black | Mineral grey |
DISPLAY | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Screen Size (Type) | 15.6" - IPS | 13.3" - 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 |
Features | Anti-glare, 170° viewing angle | Anti-glare, 170° viewing angle |
PROCESSOR | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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CPU | AMD Ryzen 5 5625U / 2.3 GHz | Intel Core i5 (10th Gen) 10210U / 1.6 GHz |
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Max Turbo Speed | 4.3 GHz | 4.2 GHz |
Number of Cores | 6-core | Quad-Core |
Cache | L3 - 16 MB | 6 MB |
64-bit Computing | - | Yes |
Features | Integrated memory controller | Integrated memory controller |
MEMORY | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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RAM | 8 GB (provided memory is soldered) | 8 GB (1 x 8 GB) |
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Max RAM Supported | 40 GB | 16 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 3200 MHz | 2666 MHz |
Rated Speed | 3200 MHz | 2666 MHz |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 1 |
Empty Slots | 1 | 0 |
STORAGE | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) |
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AUDIO & VIDEO | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Graphics Processor (GPU) | AMD Radeon Graphics | Intel UHD Graphics |
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Max Monitors Supported | 2 external monitor(s) | - |
Camera | Yes - 1080p | Yes - 720p |
Camera Features | Privacy shutter, IR camera, Windows Hello, fixed focus | ThinkShutter camera privacy |
Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
Codec | Realtek ALC3287 | - |
Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio X3 |
Audio Features | Harman-branded | Output: Harman audio technology |
COMMUNICATIONS | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | 802.11a/b/g/n/ac, Bluetooth 5.0 |
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Wireless Controller | M.2 Card | M.2 Card |
Network Interface | Gigabit Ethernet | - |
Ethernet Controller | Realtek RTL8111H-CG | - |
Features | Wake-on-LAN (WOL), dual stream (2x2) | - |
BATTERY | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Technology | Lithium polymer | Lithium Ion |
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Battery Capacity (Size) | 57 Wh | 45 Wh |
Battery Life | Up to 16.5 hours | Up to 11 hours |
AC ADAPTER | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Input | AC 100-240 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
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Output | 65 Watt | 65 Watt |
INPUT | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
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Numeric Keypad | Yes | - |
Keyboard Backlight | Yes | Yes |
Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Multi-touch touchpad, buttonless touchpad |
CONNECTIONS & EXPANSIONS | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Slots | 2 x M.2 Card (1 free) | - |
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Interfaces | USB 2.0 USB 3.2 Gen 1 (Always On) USB-C 3.2 Gen 1 (supports DisplayPort 1.2 Alt Mode) (Power Delivery 3.0) HDMI LAN Headphone/microphone combo jack |
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 |
SOFTWARE | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Operating System (OS) | Windows 11 Pro - English | Windows 10 Pro 64-bit Edition - Dutch / English / French / German / Italian |
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Software Included | - | Microsoft Office (30 days trial) |
MISCELLANEOUS | Lenovo ThinkPad E15 Gen 4 (21ED) | Lenovo ThinkBook 13s-IML (20RR) |
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Included Accessories | USB-C power adapter | Power adapter |
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Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | 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, power-on password, MIL-STD-810H tested, self-healing BIOS, NVMe password | Administrator password, hard drive password, power-on password, RapidCharge |
Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified, TUV Rheinland Low Blue Light (Software Solution) | RoHS, Energy-Related Products (ErP) Lot 3 |
SAR Value | - | 0.568 W/kg (body), 0.568 W/kg (limb) |
ENERGY STAR Certified | Yes | - |
EPEAT Compliant | EPEAT Gold | - |
Max Operating Temperature | 35 °C | - |
Min Operating Temperature | 5 °C | - |
Humidity Range Operating | 8 - 95% | - |
Manufacturer Warranty | Base warranty - 1 year - pick-up and return Extended warranty - 1 year - on-site |
Limited warranty - 2 years - pick-up and return |