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i7 overclocks itself?

post #1 of 6
Thread Starter 
A friend of mine tells me that the I7 Overclocks itself and that I don't need to overclock my processor at all. I thought of this to be untrue since my motherboard emphasizes its ability to overclock and was made for I7 processors. He also brings me to an article about it: http://www.siakoi.com/topic-specific/327.html . Explanations people? Does the I7 really Overclock itself? Thanks!

btw: New to the forums
post #2 of 6
Turbo mode is different from actually overclocking. My i7-970 has a stock speed of 3.2 Ghz and a turbo of 3.46 but by actually overclocking I'm rock solid running 4.2 Ghz folding 24/7. Turbo mode is like a momentary overclock, nothing permanent

edit: also welcome to OCN
Edited by selectstriker2 - 4/23/11 at 8:13pm
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post #3 of 6
Thread Starter 
So "Turbo mode" would just boost the processor's performance temporarily when its needed? Or rather...when cores aren't being used?

Edit: And thanks I don't see myself doing any real overclocking until I read up more about it on this website and others.
post #4 of 6
Quote:
Originally Posted by saypeeps View Post
So "Turbo mode" would just boost the processor's performance temporarily when its needed? Or rather...when cores aren't being used?

Edit: And thanks I don't see myself doing any real overclocking until I read up more about it on this website and others.
Basically yeah. It's not even CLOSE to the kind of increases you get when overclocking though and is temporary.
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post #5 of 6
Thread Starter 
Alright, Thank you guys for helping me understand "Turbo mode" =D
post #6 of 6
Just wanted to add a few things here.

As you said, Turbo Boost is basically a "temporary overclock" where the chip multiplier is increased when a core (or all cores) is nearing load. As far as I know, it will only overclock the core that is being stressed. If you have a program only using one core at 100%, it will bump that core up to a new clock (as long as the temperatures are safe.)

For instance, my 2600k is stock at 3.4 gHz, but will reach 3.8 gHz on all 4 cores when they're stressed by a program such as Prime95. I would assume this is a "good" thing because your cores (or only some cores) stay at a lower clock, and a cooler temperature, when they're not being stressed.

HOWEVER, there is also something called Enhanced Intel SpeedStep, which basically will underclock your CPU drastically when it's not in use to save power / heat. My chip runs at 1.6 gHz on all cores until it is stressed, but then basically jumps right up to the Turbo Boost speed.

So in reality, if you're using near 100% of your chip (during Prime, or folding, etc) then there's basically no difference between a chip with TB and a high TB clock, or a chip without TB and a high normal clock. Most guides to overclocking an i7 just leave TB on and up the multiplier of the TB clock speed. Also, if you've got EIST enabled, the chip will be running at a very low speed when idling anyways.

Hope I got all that right, and it made a little more sense. I'm new to i7s also. :-)
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