Now we are talking.
1. Please buy 1 more fan as exhaust.
2. Check the stock cooler is properly installed or not or just re-seat the cooler with any decent quality thermal paste (like cm value series).
3. What is your room temp? and if your rig can breathe properly i mean some clearance all around?
4. Cooler fan is running at 100% or you have unknowingly set any low noise fan profile in your mobo?