Side by side comparison and review of Lenovo ThinkPad E15 (20RE) and ASUS A509JA (EJ077T). 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 (20RE) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard comfort
good security features
solid processor performance
reasonable price point
average battery life
modest display quality
limited graphics capability
no thunderbolt support
Advantages and disadvantages of ASUS A509JA (EJ077T) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price point
lightweight design
solid state drive included
full hd display
decent processor performance
average battery life
limited graphics capability
no backlit keyboard
fewer connectivity options
DESIGN AND DIMENSIONS | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Product Type | Notebook | Notebook |
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Dimensions (WxDxH) | 36.8 cm x 24.5 cm x 1.89 cm | 36 cm x 23.5 cm x 2.29 cm |
Weight | 1.9 kg | 1.9 kg |
Case Material | Aluminum, polycarbonate ABS | - |
Colour | Black | Transparent silver |
DISPLAY | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Screen Size (Type) | 15.6" - IPS | 15.6" |
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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 | 250 cd/m² | 200 cd/m² |
Colour Gamut | - | 45% NTSC |
Features | Anti-glare, 170° viewing angle | Anti-glare |
PROCESSOR | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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CPU | Intel Core i3 (10th Gen) 10110U / 2.1 GHz | Intel Core i5 (10th Gen) 1035G1 / 1 GHz |
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Max Turbo Speed | 4.1 GHz | 3.6 GHz |
Number of Cores | Dual-Core | Quad-Core |
Cache | 4 MB | 6 MB |
64-bit Computing | Yes | Yes |
Features | Integrated memory controller | Intel Turbo Boost Technology 2.0 |
MEMORY | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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RAM | 4 GB (1 x 4 GB) | 8 GB (1 x 4 GB + 4 GB (soldered)) |
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Max RAM Supported | 16 GB | 12 GB |
RAM Type | DDR4 SDRAM | DDR4 SDRAM |
Speed | 2666 MHz | - |
Rated Speed | 2666 MHz | - |
Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
Slots Qty | 1 | 1 |
Empty Slots | 0 | 0 |
STORAGE | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Main Storage Size (HDD/SSD) | 128 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) - SK Hynix | 512 GB SSD M.2 PCIe - NVM Express (NVMe) |
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AUDIO & VIDEO | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Graphics Processor (GPU) | Intel UHD Graphics | Intel UHD Graphics |
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Camera | Yes - 720p | Yes |
Camera Features | ThinkShutter camera privacy | - |
Sound | Stereo speakers, dual array microphone | Speaker, microphone |
Codec | Conexant CX11880 | - |
Compliant Standards | High Definition Audio, Dolby Advanced Audio | - |
Audio Features | - | ASUS SonicMaster, ASUS Bang & Olufsen ICEpower |
COMMUNICATIONS | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
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Wireless Controller | Intel Wireless-AC 9560 - M.2 Card | - |
Network Interface | Gigabit Ethernet | - |
Ethernet Controller | Realtek R8111GUS | - |
BATTERY | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Technology | 3-cell Lithium Ion | 2-cell Lithium Ion |
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Battery Capacity (Size) | 45 Wh | 32 Wh |
Battery Life | Up to 12.2 hours | - |
AC ADAPTER | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
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Output | 65 Watt | 45 Watt, 19 V, 2.37 A |
INPUT | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
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Numeric Keypad | Yes | - |
Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | Chiclet keyboard |
CONNECTIONS & EXPANSIONS | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Interfaces | USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB 2.0 USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) (Power Delivery) HDMI LAN Headphone/microphone combo jack |
Headphone/microphone combo jack USB 3.2 Gen 1 2 x USB 2.0 USB-C 3.2 Gen 1 HDMI |
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Memory Card Reader | - | Yes (microSD) |
SOFTWARE | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Operating System (OS) | Windows 10 Pro 64-bit Edition | Windows 10 Home 64-bit Edition |
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MISCELLANEOUS | Lenovo ThinkPad E15 (20RE) | ASUS A509JA (EJ077T) |
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Included Accessories | USB-C power adapter | Power adapter |
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Security | Trusted Platform Module (TPM 2.0) Security Chip | Firmware Trusted Platform Module (TPM) Security Chip |
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, MIL-STD-810G tested | System password, hard drive password |
Compliant Standards | RoHS | - |
SAR Value | 0.367 W/kg (body), 0.367 W/kg (limb) | 0.13 W/kg (body), 0.13 W/kg (limb) |
ENERGY STAR Certified | Yes | - |
EPEAT Compliant | EPEAT Silver | - |