so i got this new setup consists of amd fx 8350 stock clock 4ghz ,asus strix gtx 980 , antech kuhler 650 and 8gb strontium dual channel memory @1333mhz .i get random fps drops in games ,i tried bf4 the fps drops from 90 to 30 or even below ,it spikes contionuosly from 30 90 creating an unplayable gameplay ,also i tried dota 2 fps falls from 120 to 40 and then goes to 50 and back to 120 being completely random ,the kuhler cools the cpu well , idle tems are around 28 and load temps never exceed 40 ,im using an 875 watt dell psu which i took from my alienware aurora ,also this happens in crysis 3 where fps will drop from 70 to 28 randomly ,the problem of cpu throttling or motherboard throttling is out of the picture as the mb temps never exceed over 40 and the setup is being run on an open air test bench ,pls help me diagnose the problem .im using windows 7 pro ,and i have scanned the entire system using malwarebytes with no viruses.