I get too low FPS in such games like TF2, BF4 etc. By low FPS I mean it can drop to 40. Drivers are updated.
RAM : 8GB (2x4) SP DDR3 1333 MHz.
GPU: Saphire R9 290 TRI-X
CPU : FX X8 8320
HDD : Seagate barracuda 1000GB
PSU : High Power 750W
MB : 970A G43
A friend said that maybe your problem is because of your RAM's speed. I am not sure that's why I am here, thanks everybody.