When i play Battlefield 3 every now and then the game freeze for about 1-2 seconds then runs like normal. I get like 60-70fps on it at 1920x1080 everything low (Would go higher but need more ram first) Is it normal for it to freeze ? My pc is kind of good and its not even a week old yet. Would more ram help? Thanks for your help 
My specs are:
CPU: AMD FX-6300 (3.5GHZ, 6CORE)
GPU: ASUS GeForce 650 GTX 1GB
RAM; 4GB DDR3 1600mhz

My specs are:
CPU: AMD FX-6300 (3.5GHZ, 6CORE)
GPU: ASUS GeForce 650 GTX 1GB
RAM; 4GB DDR3 1600mhz