have u read before asking?   plz try this method 1st then see what happens

do have any case fan installed inside ur casing?airflow is very important to maintain good temperature.do update us wat u did maybe then we can help u more on wat to do.aite?

may i know wat casing ur using and wat size of fan can be fitted front and rear?for the front fan set the fan to suck air in @ intake setting and the rear fan to suck out air @ exhaust setting.why these setting?some simple logic ok?

front fan>>to suck@supply in fresh/cool air inside ur casing to cool down ur hardwares

rear fan>>to suck out warm air OUT of ur casing

Fan suggestions.

if ur casing has side window.go for vantec@Vizo UVLED fans very good cfm and quiet plus bling2.cost u 30ish per piece.if u wan performace go for panaflo/delta tri blade if ur ears can stand it.

nevermind just install the 8cm fan.cheap wans also nvrmind as long as u case has some airflow shud help lower the temperature a bit