In depth comparison and review of Lenovo ThinkPad E580 (20KT) and Lenovo IdeaPad 720S-14IKBR (81BD). 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.
Advantages and disadvantages of Lenovo IdeaPad 720S-14IKBR (81BD) based on its technical characteristics, features, user experience, expert reviews and price level.
slim, lightweight design
sharp full HD display
solid overall performance
fast SSD storage
decent battery life
limited port selection
no dedicated GPU
average sound quality
pricier than competitors
| DESIGN AND DIMENSIONS | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 36.9 cm x 25.2 cm x 1.995 cm | 32.07 cm x 22.28 cm x 1.59 cm |
| Weight | 2.1 kg | 1.55 kg |
| Case Material | Aluminum, polycarbonate ABS | Aluminium (top), aluminium (bottom) |
| Colour | Black | Silver |
| DISPLAY | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Screen Size (Type) | 15.6" - IPS | 14" - IPS |
|---|---|---|
| LCD Backlight Technology | 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 | 300 cd/m² |
| Features | Anti-glare | Anti-glare |
| PROCESSOR | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| CPU | Intel Core i5 (8th Gen) 8250U / 1.6 GHz | Intel Core i5 (8th Gen) 8250U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | 3.4 GHz | 3.4 GHz |
| Number of Cores | Quad-Core | Quad-Core |
| Cache | 6 MB | 6 MB |
| 64-bit Computing | Yes | - |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| RAM | 8 GB (1 x 8 GB) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 32 GB | 16 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | 2400 MHz | 2400 MHz |
| Rated Speed | 2400 MHz | 2400 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 2 | 1 |
| Empty Slots | 1 | 0 |
| STORAGE | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD M.2 PCIe - NVM Express (NVMe) - Toshiba | 128 GB SSD M.2 2280 PCIe 3.0 x4 |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Multi-GPU Configuration | - | 1 single GPU card / integrated GPU |
|---|---|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | NVIDIA GeForce MX150 / Intel UHD Graphics 620 |
| Video Memory | - | 2 GB GDDR5 SDRAM |
| Camera | Yes - 720p | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | - | Fixed focus |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | CX11852 | - |
| Compliant Standards | High Definition Audio, Dolby Advanced Audio | High Definition Audio, Dolby Audio Premium |
| Audio Features | - | Output: JBL |
| COMMUNICATIONS | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | Intel Dual Band Wireless-AC 3165 - M.2 Card | M.2 Card |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Realtek R8111GUS | - |
| Features | - | Single stream (1x1) |
| BATTERY | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Technology | 3-cell Lithium Ion | 4-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 45 Wh | 55 Wh |
| Battery Life | Up to 12.23 hours | Up to 14 hours |
| AC ADAPTER | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 20 V, 3.25 A | 65 Watt |
| INPUT | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad, buttonless touchpad | Multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Interfaces | USB 3.1 Gen 1 USB 3.1 Gen 1 (Always On) USB 2.0 HDMI LAN USB-C 3.1 Gen 2 Headphone/microphone combo jack |
USB 3.0 (Always On) USB 3.0 USB-C 3.1 Gen 1/Thunderbolt 3/DisplayPort 1.2a (Power Delivery) HDMI Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | Yes (microSD) | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | - | Lenovo Settings, McAfee LiveSafe (30 days trial), Lenovo ID, Lenovo App Explorer |
| MISCELLANEOUS | Lenovo ThinkPad E580 (20KT) | Lenovo IdeaPad 720S-14IKBR (81BD) |
|---|
| Included Accessories | USB-C power adapter | Power adapter |
|---|---|---|
| Security | 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 | Administrator password, power-on password |
| Compliant Standards | RoHS | RoHS |
| SAR Value | 0.579 W/kg (body), 0.579 W/kg (limb) | - |
| ENERGY STAR Certified | Yes | - |
| Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |
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