Just got a general question about the cooling fans in my desktop tower. I recently bought a used full tower and I put my parts from my other case in this one and I believe it is a Chieftec Dragon case and it has 2 intake and 2 outtake fans in it and it has no side fan like my other case. I have a dual core cpu with 4GB ram, a 9800GT card and a 450 psu. So what I am wondering is, do I really need the 2 intake and 2 outtake fans or would just one of each be enough and also should I make a hole for a side fan? I use speedfan and temps are normal but just wondering about the amount of fans I really need for that type of hardware. Thanks.