Question Bios shows CPU clock is 3.7 but in games it's only 3.3?

Aug 24, 2020
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hi guys
i have i5 3340s on a desktop pc and a ASRock P67 Extreme4 Gen3 motherboard
my problem is that when i overclock my cpu from 3.3 to 3.7 in bios it show that clock speed is 3.7 and when i run windows on idle it goes to 3.7 but in games and stress test cpu clock don't go above 3.3
and also my cpu temp is fine(max:60c)
and thanks for helping me