If two many processes are slowing down your computer then you may need to look at getting better or more ram sticks the maximum you can have on a REGULAR mother board is 2.

You should look at getting something like 8GB or 16GB depending on how much you require for your computer Gaming photo shop etc, may require lots where as just browsing the web would require a minimum amount.~

Memory looks like a thin stick and stays on your mother board like this.