Motherboard: ASUS B85M-G (about 600)
Memory: Kingston 4GB×2 (about 450)
Graphics card: GTX760 or R9 270x (about 1500)
Hard disk: Seagate or Western Digital1TB (about 400)
Power supply: more than 500W is enough.
Chassis: Just choose what you like.
Display: TPV AOC I2269VW? 2 1.5 inch (about 850)
Based on the above configuration, the price of the monitor is about 4500-5000 yuan.
PS: If you are not a fanatic (that is, you must be stable at 1080P and 60FPS), then most of the games above 1600×900 are divided into high special effects and full special effects without pressure, and a few are medium special effects.