Compare Lenovo Yoga Duet 7i vs Lenovo Yoga C640 13 vs Lenovo Yoga S740 15

[[{"Ft":"Connectivity","Fn":"Ports","Fv":"2x USB-C (also PD 3.0 + DisplayPort), 1x USB-C, SD-card reader, 3.5mm audio jack"},{"Ft":"Connectivity","Fn":"Wireless Connectivity","Fv":"WiFi6, Bluetooth 5, LTE (optional)"},{"Ft":"Construction","Fn":"Camera | Front","Fv":"5M IR (fix focus)"},{"Ft":"Construction","Fn":"Camera | Rear","Fv":"5M (autofocus)"},{"Ft":"Construction","Fn":"Colors","Fv":"Slate Grey or Orchid"},{"Ft":"Construction","Fn":"Speakers","Fv":"Dolby Audio Speakers + Smart Amp"},{"Ft":"Dimensions","Fn":"Size | Depth","Fv":"205.5 mm"},{"Ft":"Dimensions","Fn":"Size | Height","Fv":"9.19 mm"},{"Ft":"Dimensions","Fn":"Size | Width","Fv":"297.4 mm"},{"Ft":"Dimensions","Fn":"Weight","Fv":"Starting at 798.8 g (1.76 lbs)"},{"Ft":"Dimensions","Fn":"Weight","Fv":"Starting at 1.16 kg (2.56 lbs)"},{"Ft":"Display","Fn":"Brightness","Fv":"450 nits"},{"Ft":"Display","Fn":"Display Diagonal","Fv":"13\u0026#34;"},{"Ft":"Display","Fn":"Gamut","Fv":"100% sRGB"},{"Ft":"Display","Fn":"Resolution","Fv":"2K WQHD (2160 x 1350)"},{"Ft":"Function","Fn":"Graphics","Fv":"Intel UHD Graphics"},{"Ft":"Function","Fn":"HDR","Fv":"Dolby Vision"},{"Ft":"Function","Fn":"Operating System","Fv":"Windows 10 Pro or Windows 10 Home"},{"Ft":"Function","Fn":"Processor","Fv":"10th-gen Intel Core i3-10110U, i5-10210U, or i7-10510U"},{"Ft":"Function","Fn":"Touch Screen","Fv":"Yes"},{"Ft":"Performance","Fn":"Battery Life","Fv":"26 h (no backlight, always typing)"},{"Ft":"Performance","Fn":"Battery Life","Fv":"10.8 h (MobileMark 2014)"},{"Ft":"Performance","Fn":"Memory | Capacity","Fv":"4 GB / 8 GB / 16 GB"},{"Ft":"Performance","Fn":"Memory | Type","Fv":"DDR4"},{"Ft":"Performance","Fn":"Storage","Fv":"PCIe SSD: 128 GB / 256 GB / 512 GB / 1 TB"},{"Ft":"Production","Fn":"Debut","Fv":"2020-05-26"}],[{"Ft":"Connectivity","Fn":"Ports","Fv":"1x USB-C + 2x USB 3.1 Gen1"},{"Ft":"Connectivity","Fn":"Wireless Connectivity","Fv":"WiFi 5 or WiFi 6 + Bluetooth + optional 4G LTE"},{"Ft":"Construction","Fn":"Colors","Fv":"Iron Grey"},{"Ft":"Construction","Fn":"Form Factor","Fv":"2-in-1 convertible laptop"},{"Ft":"Construction","Fn":"Speakers","Fv":"User-facing stereo speakers"},{"Ft":"Dimensions","Fn":"Bezels","Fv":"3.47mm sides / 7.19mm top / 12.57mm bottom"},{"Ft":"Dimensions","Fn":"Size | Depth","Fv":"204.48mm / 8.05 inch"},{"Ft":"Dimensions","Fn":"Size | Height","Fv":"16.1 mm / 0.63 inch"},{"Ft":"Dimensions","Fn":"Size | Width","Fv":"306.8 mm / 12.08 inch"},{"Ft":"Dimensions","Fn":"Weight","Fv":"1.3 kg / 2.87 lbs"},{"Ft":"Display","Fn":"Brightness","Fv":"300 or 400 nits"},{"Ft":"Display","Fn":"Display Diagonal","Fv":"13.3 inch"},{"Ft":"Display","Fn":"Display Type","Fv":"IPS"},{"Ft":"Display","Fn":"Resolution","Fv":"FHD (1920x1080)"},{"Ft":"Function","Fn":"Graphics","Fv":"Integrated Intel HD 620"},{"Ft":"Function","Fn":"Operating System","Fv":"Windows 10"},{"Ft":"Function","Fn":"Processor","Fv":"10th-gen Intel Core i3, i5, or i7"},{"Ft":"Function","Fn":"SIM","Fv":"Micro-SIM"},{"Ft":"Function","Fn":"Touch Screen","Fv":"Yes"},{"Ft":"Performance","Fn":"Battery Life","Fv":"Up to 20 h"},{"Ft":"Performance","Fn":"Memory | Capacity","Fv":"Up to 16 GB (soldered)"},{"Ft":"Performance","Fn":"Memory | Type","Fv":"DDR4 2400MHz"},{"Ft":"Performance","Fn":"Storage","Fv":"Up to 512 GB PCIe SSD"},{"Ft":"Production","Fn":"Debut","Fv":"2019 IFA"}],[{"Ft":"Connectivity","Fn":"Ports","Fv":"2x Thunderbolt 3 + 1x USB 3.1 Gen2 + 1x Audio combo + 1x Micro SD card reader"},{"Ft":"Connectivity","Fn":"Wireless Connectivity","Fv":"WiFi 5 or WiFi 6 + Bluetooth"},{"Ft":"Construction","Fn":"Colors","Fv":"Iron Grey"},{"Ft":"Construction","Fn":"Material","Fv":"Aluminum"},{"Ft":"Construction","Fn":"Speakers","Fv":"Dolby Atmos Speaker System (D-cover) with Smart AMP"},{"Ft":"Dimensions","Fn":"Size | Depth","Fv":"243.33 mm / 9.58 inch"},{"Ft":"Dimensions","Fn":"Size | Height","Fv":"19.95 mm / 0.79 inch"},{"Ft":"Dimensions","Fn":"Size | Width","Fv":"357.12 mm / 14.06 inch"},{"Ft":"Dimensions","Fn":"Weight","Fv":"1.9 kg / 4.2 lbs"},{"Ft":"Display","Fn":"Brightness","Fv":"500 nits"},{"Ft":"Display","Fn":"Display Diagonal","Fv":"15.6 inch"},{"Ft":"Display","Fn":"Display Type","Fv":"IPS"},{"Ft":"Display","Fn":"Resolution","Fv":"FHD (1920x1080) or 4K UHD (3840x2160)"},{"Ft":"Function","Fn":"Fast Charging","Fv":"Rapid Charge"},{"Ft":"Function","Fn":"Graphics","Fv":"NVIDIA GeForce GTX1650"},{"Ft":"Function","Fn":"HDR","Fv":"VESA DisplayHDR 400"},{"Ft":"Function","Fn":"Operating System","Fv":"Windows 10"},{"Ft":"Function","Fn":"Processor","Fv":"9th-gen Intel Core i5, i7, or i9"},{"Ft":"Function","Fn":"Touch Screen","Fv":"4K UHD panel only"},{"Ft":"Performance","Fn":"Battery Life","Fv":"Up to 10 hours"},{"Ft":"Performance","Fn":"Memory | Capacity","Fv":"Up to 16 GB"},{"Ft":"Performance","Fn":"Memory | Type","Fv":"DDR 4"},{"Ft":"Performance","Fn":"Storage","Fv":"Up to 1 TB"},{"Ft":"Production","Fn":"Debut","Fv":"2019 IFA"},{"Ft":"Production","Fn":"Model Name","Fv":"S740-15IRH"}]]