Compare Lenovo Yoga Duet 7i vs Lenovo Yoga C940 15 vs Lenovo Yoga C640 13
Variants
Keyboard
FHD
4K
Connectivity
Ports
2x USB-C (also PD 3.0 + DisplayPort), 1x USB-C, SD-card reader, 3.5mm audio jack
2x Thunderbolt 3 + 1x USB 3.1 Gen1 + 1x Audio combo
1x USB-C + 2x USB 3.1 Gen1
Wireless Connectivity
WiFi6, Bluetooth 5, LTE (optional)
WiFi 6 or WiFi 5, Bluetooth
WiFi 5 or WiFi 6 + Bluetooth + optional 4G LTE
Construction
Camera | Front
5M IR (fix focus)
Camera | Rear
5M (autofocus)
Colors
Slate Grey or Orchid
Iron Grey
Iron Grey
Form Factor
2-in-1 convertible laptop
2-in-1 convertible laptop
Material
CNC Aluminum
Speakers
Dolby Audio Speakers + Smart Amp
Rotating Sound Bar with Dolby Atmos Speaker System; 2 Base Speakers inside D-Cover
User-facing stereo speakers
Dimensions
Bezels
3.84mm sides / 6.69mm top / 12.8mm bottom
3.47mm sides / 7.19mm top / 12.57mm bottom
Size | Depth
205.5 mm
238.5 mm / 9.39 inch
204.48mm / 8.05 inch
Size | Height
9.19 mm
17.5 mm / 0.69 inch
16.1 mm / 0.63 inch
Size | Width
297.4 mm
355.5 mm / 13.1 inch
306.8 mm / 12.08 inch
Weight
Starting at 798.8 g (1.76 lbs)
1.9 kg / 4.19 lbs
1.3 kg / 2.87 lbs
Display
Brightness
450 nits
500 nits
300 or 400 nits
Display Diagonal
13"
15.6 inch
13.3 inch
Display Type
IPS
Gamut
100% sRGB
Resolution
2K WQHD (2160 x 1350)
FHD (1920x1080)
Function
Fast Charging
15 Minutes for up to 2 Hours
Graphics
Intel UHD Graphics
NVIDIA GeForce GTX 1650
Integrated Intel HD 620
HDR
Dolby Vision
VESA DisplayHDR
Operating System
Windows 10 Pro or Windows 10 Home
Windows 10
Windows 10
Processor
10th-gen Intel Core i3-10110U, i5-10210U, or i7-10510U
9th-gen Intel Core i7 or i9
10th-gen Intel Core i3, i5, or i7
SIM
Micro-SIM
Touch Screen
Yes
Yes
Performance
Battery Life
10.8 h (MobileMark 2014)
Up to 20 h
Memory | Capacity
4 GB / 8 GB / 16 GB
Up to 16 GB
Up to 16 GB (soldered)
Memory | Type
DDR4
DDR4 2400MHz
Storage
PCIe SSD: 128 GB / 256 GB / 512 GB / 1 TB
Up to 2TB PCIe SSD
Up to 512 GB PCIe SSD
Production
Debut
2020-05-26
2019 IFA
2019 IFA
Model Name
C940-15IRH
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