Loud Fan when running Games/Multiple Programs, any help?

Thanks for all the replies guys. Alot of you are talking about a fan controller, will this reduce noise by slowing it down? If it slows it down wont it get hotter?
Also, had advice from you guys to get a new fan, which would be the best for my PC?
Cheers guys.
 
So is it that my pc thinks 'im playing a game now so i need to turn the fan up' or is it more cause its getting hot, and by getting this fan controller it will make it more intelligent as to how much it needs to run?
 
Case description says 120mm. Was lookin at these ones:http://www.amazon.co.uk/Corsair-CO-9050002-WW-Series-Edition-Airflow/dp/B007RESG7G/ref=sr_1_1?s=computers&ie=UTF8&qid=1391091854&sr=1-1&keywords=af120 Good, bad?
 
140mm? Is the fan at the front that big? Not at home so i cant check at the moment. Also which edition of that for front?

So what im thinking is getting:
Sentry 2 fan controller
AF120 Quiet Edition dual pack (side exhaust)
AF120 Performance edition (rear exhaust)
Silverstone 120mm Air Penetrator/AF120/AF140 depending on fan size and edition
 
Yes, that what you thing to get is great. But when you are going to get new fans there is not such a big need from the controller. If there is noise again that means the motherboard is too hot and its making the fans faster. If there is a problem write to me a PM.