Okay now here me out, I'm new to this so please go easy on me. I AM using a stock cooler that's why i'm not going above 3.9ghz. Now, when i run prime 95 for a while, my cpu goes up to 72 (No crashes or anything) But when i played battlefield hardline for around 30-40 mins, temperatures did not go above 59. I'm using hardware monitor and Core temp for measuring temperatures. No my basic question is, is it alright if i keep it at 3.9, or should i go back?