What is bottlenecking in my system

Queral

Commendable
Dec 29, 2016
11
0
1,510
My motherboard is Asus P7P55LX and i have intel i3-560, MSİ Nvidia gtx750ti OC, 4gb ram and 500watt psu but i cant play CS-GO in medium quality when i try playing game stop working. i can only play it in low quality. in game; GPU %100 and dRam is % 40 what is bottlenecking in my system ?

-decreasing resolution doesnt any effect.