I5- 4670k Overclocked itself to 4.1 ghz?

Hardware Hub CPU
1

So recently I have been planning on trying to oc my i5- 4670k . So before going out and buying a larger heat sink I decided to bench mark my cpu with stock clock and stock cooler with prime 95. What I found first is my cpu hit around 90-100 Celsius. When it reached that I got scared and killed prime 95. 

What I found was both cpuz and realtemp both say my core speed is around 4100mhz. Thus from what I understand 4.1ghz. So either I am reading something incorrectly or my cpu is running at 4.1ghz without me realizing it. I never went into the bios to change the clocks so I am confused as fuck.  

Link : http://imgur.com/fNP27zI

parts: I5-4670k 

Asus Z87plus

Corsair 2133mhz ram 2x4gb

gtx 560

 

Can anyone help me out? 

2

Either you overclocked it and forgot or the motherboard bios/software did it for you at some point. Just go into the BIOS and drop down the multiplier til you get your cooler.

3

There is software included in ASUS AI suite that auto overclocks. I tried it on a system with a i5 3570k and it overclocked to 4.2. I would guess thats what happened. 

4

Yep, I went into the bios and found that the asus mobo set the max turbo feq, to 4.2 ghz.