Compare Lenovo Yoga Duet 7i vs Lenovo Yoga C640 13 vs Lenovo Yoga Duet 7i
Connectivity
Ports
2x USB-C (also PD 3.0 + DisplayPort), 1x USB-C, SD-card reader, 3.5mm audio jack
1x USB-C + 2x USB 3.1 Gen1
2x USB-C (also PD 3.0 + DisplayPort), 1x USB-C, SD-card reader, 3.5mm audio jack
Wireless Connectivity
WiFi6, Bluetooth 5, LTE (optional)
WiFi 5 or WiFi 6 + Bluetooth + optional 4G LTE
WiFi6, Bluetooth 5, LTE (optional)
Construction
Camera | Front
5M IR (fix focus)
5M IR (fix focus)
Camera | Rear
5M (autofocus)
5M (autofocus)
Colors
Slate Grey or Orchid
Iron Grey
Slate Grey or Orchid
Form Factor
2-in-1 convertible laptop
Speakers
Dolby Audio Speakers + Smart Amp
User-facing stereo speakers
Dolby Audio Speakers + Smart Amp
Dimensions
Bezels
3.47mm sides / 7.19mm top / 12.57mm bottom
Size | Depth
205.5 mm
204.48mm / 8.05 inch
205.5 mm
Size | Height
9.19 mm
16.1 mm / 0.63 inch
9.19 mm
Size | Width
297.4 mm
306.8 mm / 12.08 inch
297.4 mm
Weight
Starting at 798.8 g (1.76 lbs)
1.3 kg / 2.87 lbs
Starting at 798.8 g (1.76 lbs)
Display
Brightness
450 nits
300 or 400 nits
450 nits
Display Diagonal
13"
13.3 inch
13"
Display Type
IPS
Gamut
100% sRGB
100% sRGB
Resolution
2K WQHD (2160 x 1350)
FHD (1920x1080)
2K WQHD (2160 x 1350)
Function
Graphics
Intel UHD Graphics
Integrated Intel HD 620
Intel UHD Graphics
HDR
Dolby Vision
Dolby Vision
Operating System
Windows 10 Pro or Windows 10 Home
Windows 10
Windows 10 Pro or Windows 10 Home
Processor
10th-gen Intel Core i3-10110U, i5-10210U, or i7-10510U
10th-gen Intel Core i3, i5, or i7
10th-gen Intel Core i3-10110U, i5-10210U, or i7-10510U
SIM
Micro-SIM
Touch Screen
Yes
Yes
Yes
Performance
Battery Life
10.8 h (MobileMark 2014)
Up to 20 h
10.8 h (MobileMark 2014)
Memory | Capacity
4 GB / 8 GB / 16 GB
Up to 16 GB (soldered)
4 GB / 8 GB / 16 GB
Memory | Type
DDR4
DDR4 2400MHz
DDR4
Storage
PCIe SSD: 128 GB / 256 GB / 512 GB / 1 TB
Up to 512 GB PCIe SSD
PCIe SSD: 128 GB / 256 GB / 512 GB / 1 TB
Production
Debut
2020-05-26
2019 IFA
2020-05-26
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