I want to update the computer configuration, mainly to change the memory and graphics card.

Look at what your computer is going to do. If you plan to play games for a long time, it is strongly recommended that you get rid of the old baggage and configure a new machine. Now, a brand-new AMD quad-core integrated monitor is configured as long as 1600 yuan, which means that all your second-hand hardware is upgraded, and to achieve similar performance, you need 950 yuan (the hard disk does not include 775 quad-core+memory +400 graphics card).

If you just upgrade the original machine and play some simple small and medium-sized games, a simple upgrade is also possible. You can calculate the cost. If it's not worth it, I suggest you change it to a new one:

You didn't say the game, use the game to run smoothly and upgrade LOL:

CPU E8300 2.8G 140 yuan or E5400 2.7G 80 yuan or e6700 3.2G 135 yuan.

Memory 2G 667 80 yuan

Graphics card gtx240ddrr512m130 yuan (medium and high special effects can be smooth), with power consumption of 65w or 5750ddrr512m and 200 yuan power consumption of 80W (full LOL).

Power supply, brand power supply is usually very small. First of all, Ma 450 is rated at 350W 45 yuan.

A * * * fee e5400 80 yuan +2G 80 yuan +5750 200 +300W power supply 45= 405 yuan.