✔ 最佳答案
Before you do that, you have to check below:
1. How many Memory slot in your Mother Board?
2. How many slot still NOT use
3. What kind of memory speed of your mother board support
The best way is check your motherboard manual and see.
If your motherboard only have 2 slot... and also USED... and just 512MB (256MB x 2)for your existing computer, you can remove the 2 memory and add 512MB x 2 or 1GBMB x 2
Please be note that, add memory may be good for you to play more game, but the CPU speed and our HD space also other concern to run the Game.
Good Luck!!