Okay so, I just did built up my PC and I did turn it on, the heat goes to +60-70 while idling, it did once raise to 91 so just did close the PC. Now I'm looking out for a solution of my overheating problem. I did check that all the cables are connected rightly and that I did put the thermal paste right.
My specs:
MSI 970 Gaming Socket AM3+, ATX, AMD 970 AMD (Motherboard)
AMD Processor FX-8350
Gigabyte NVIDIA GeForce GTX 960 Windforce 2X OC 4GB (graphic card)
Corsair Vengeance Blue DDR3 DIMM PC12800/1600MHz CL9 LP 2x4GB (RAM)
PSU Cooler Master B600 V2 600W ATX (power supply)
Sharkoon REX3 (my case with 2 fans)
And my CPU cooler is Cooler Master: Hyper 212X
My specs:
MSI 970 Gaming Socket AM3+, ATX, AMD 970 AMD (Motherboard)
AMD Processor FX-8350
Gigabyte NVIDIA GeForce GTX 960 Windforce 2X OC 4GB (graphic card)
Corsair Vengeance Blue DDR3 DIMM PC12800/1600MHz CL9 LP 2x4GB (RAM)
PSU Cooler Master B600 V2 600W ATX (power supply)
Sharkoon REX3 (my case with 2 fans)
And my CPU cooler is Cooler Master: Hyper 212X