according to your requirements, to give you the following configuration
Hello, very happy to answer for you
cpu: Intel Pentium G620/boxed 385 yuan
mainboard: Gigabyte GA-H61M-DS2 350 yuan
memory: Kingston DDR3 1333 2G x 2=4G 140 yuan (memory group dual-channel)
Hard disk: Western Digital Blue Disk 500G 400 yuan
Graphics card: cpu integrated, model HD1000
Power supply: Antec VP350P 250 yuan
Monitor: AOC Green Shadow e2251Fw 780 yuan
The total price of 2300 yuan. It fully meets your requirements. When you say upgrade, what do you mean by upgrade? If you are talking about adding a discrete graphics card, this configuration can add a graphics card that currently belongs to the mid-range. The monitor is 21.6 inches, support 1080P HD output. Memory group dual-channel. What else do you want? At any time for you to bring a patient answer! If you want, you can send your contact information, enterprise ~ goose to my Baidu message, or direct Baidu HI me, or chase me when given, can be.
Added: optical drive to buy the general can be, like Samsung, Asus, Pioneer random a can, about 100 yuan. Anyway, usually not much chance to use the optical drive, install the system are using a USB flash drive it. Keyboard and mouse to buy when you can ask the computer city comes with, do not have to spend money to buy. Unless you have special requirements, in fact, the computer city to send the keyboard and mouse is quite good. I give the price is a first-tier city offer, Zhengzhou is a first-tier bar, you can refer to!