Detailed comparison and review of Lenovo Yoga C640-13IML (Lenovo Yoga C640) and Lenovo Yoga 900S-12ISK (80ML). With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.
Advantages and disadvantages of Lenovo Yoga C640-13IML (Lenovo Yoga C640) based on its technical characteristics, features, user experience, expert reviews and price level.
long battery life
lightweight design
responsive touchscreen
solid build quality
fast charging support
limited port selection
average speaker quality
no dedicated GPU
higher price point
Advantages and disadvantages of Lenovo Yoga 900S-12ISK (80ML) based on its technical characteristics, features, user experience, expert reviews and price level.
lightweight and portable
high-resolution display
innovative hinge design
solid battery life
responsive touch screen
limited port selection
moderate processing power
higher price point
no dedicated graphics
| DESIGN AND DIMENSIONS | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Product Type | Notebook - flip design | Notebook - flip design |
|---|---|---|
| Dimensions (WxDxH) | 30.6 cm x 20.448 cm x 1.695 cm | 30.5 cm x 20.8 cm x 1.28 cm |
| Weight | 1.35 kg | 999 g |
| Case Material | Aluminum, polycarbonate, glass-fibre | Aluminum, carbon fibre, magnesium-aluminum alloy |
| Colour | Iron grey | Champagne gold |
| DISPLAY | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Screen Size (Type) | 13.3" - IPS | 12.5" - IPS |
|---|---|---|
| Touchscreen | Yes (10-point multi-touch) | Yes (10-point multi-touch) |
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 2560 x 1440 (WQHD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 400 cd/m² | 300 cd/m² |
| Colour Gamut | 72% NTSC | - |
| Features | Anti-glare, 72% NTSC colour gamut | Glossy |
| PROCESSOR | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| CPU | Intel Core i5 (10th Gen) 10210U / 1.6 GHz | Intel Core m5 (6th Gen) 6Y54 / 1.1 GHz |
|---|---|---|
| Max Turbo Speed | 4.2 GHz | 2.7 GHz |
| Number of Cores | Quad-Core | Dual-Core |
| Cache | 6 MB | 4 MB |
| 64-bit Computing | Yes | Yes |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| RAM | 8 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | DDR4 SDRAM | LPDDR3 SDRAM |
| Speed | 2400 MHz | 1600 MHz / PC3L-12800 |
| Rated Speed | 2400 MHz | 1600 MHz |
| STORAGE | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 3.0 x2 - NVM Express (NVMe) | 256 GB SSD M.2 PCIe - Samsung |
|---|
| AUDIO & VIDEO | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | Intel HD Graphics 515 |
|---|---|---|
| Camera | Yes - 720p | Yes - 720p |
| Resolution | - | 1 Megapixel |
| Camera Features | Privacy shutter | - |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Compliant Standards | High Definition Audio, Dolby Atmos | High Definition Audio, Dolby Audio Premium |
| COMMUNICATIONS | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 5.0 | Bluetooth 4.0, 802.11a/b/g/n/ac |
|---|---|---|
| Wireless Controller | M.2 Card | Broadcom BCM4350 - M.2 Card |
| Features | Dual stream (2x2) | - |
| BATTERY | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Technology | Lithium Ion | 4-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 60 Wh | 53 Wh |
| Battery Life | Up to 20 hours | Up to 10.5 hours |
| AC ADAPTER | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt | 40 Watt, 20 V, 2 A |
| INPUT | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Type | Keyboard, digitizer, touchpad, digital pen | Keyboard, touchpad |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| Features | Multi-touch touchpad, buttonless touchpad | Multi-touch touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Interfaces | 2 x USB 3.1 Gen 1 USB-C 3.1 Gen 1 (supports DisplayPort Alt Mode) Headphone/microphone combo jack |
USB 3.0 USB 2.0 (DC-In combo) Headphone/microphone combo jack USB-C |
|---|
| SOFTWARE | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition - English | Windows 10 Home 64-bit Edition - English |
|---|---|---|
| Software Included | Microsoft Office (Trial) | - |
| MISCELLANEOUS | Lenovo Yoga C640-13IML (Lenovo Yoga C640) | Lenovo Yoga 900S-12ISK (80ML) |
|---|
| Included Accessories | Power adapter, Lenovo Active Pen | Power adapter |
|---|---|---|
| Integrated Options | Accelerometer | Ambient light sensor, G-sensor |
| Security | Firmware Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | - |
| Features | Administrator password, power-on password | Administrator password, hard drive password, power-on password, digital compass, 1 USB 3.0 with Video-out |
| Compliant Standards | RoHS | RoHS |
| SAR Value | 0.32 W/kg (body), 0.32 W/kg (limb) | - |
| ENERGY STAR Certified | Yes | Yes |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | Limited warranty - 1 year |
| Model Number | 13IML 81UE | - |
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