Let’s take a look at the ASUS ET2011AGK all-in-one machine for reference
Screen size: 20 inches
CPU model: AMD Athlon II X2 260u
CPU frequency: 1800MHz
Memory capacity: 2GB DDR3 1333MHz
Hard disk capacity: 500GB SATA (7200 rpm)
Graphics chip: AMD Radeon HD 6370 512MB
It’s pretty good, you can buy it on JD.com or Amazon