At the moment, I am using a Duel core 2.5ghz. However my friend just thought he would give me a new one, a quad core 1.9ghz. I don't know which on is better, they are both AMD, so I am confused do to my lack of extreme computer knowldge, I know how to put a computer together, but how to distinguish certain things makes my brain go "WTF!" So which should I go with?