Overclocking limiting factors

[not_Linus]

Hello all,  so i have pushed my cpu up to 4.6ghz on the oc.  After 20 min stress test with adia 64 i only reached 48c.  Now my question is this;  is the heat the only thing that will limit how high i can push the oc, or will there be a point that the speed will just be too high to be stable?

[Enderman]

if its not stable you can just increase the voltage to make it stable

and thats what creates the heat

[Deli]

6600K 4.6GHz at 48C. Wow, what a chip you have.

[TheGamingBarrel]

Temperatures will help you OC more, the lower the better.

Voltages help, but they increase resistance so it increases temperatures.

[DXMember]

what the hell are you cooling that with?

are you sure you're running CPU stress with Aida64 and not a GPU stress?

heat is the only limiting factor in practice, there are theoretically more stuff that limits you, but heat will stop you most of the times before you have to worry about other stuff

 

5 minutes ago, TheGamingBarrel said:

Voltages increase resistance

What? No....

[not_Linus]

2 minutes ago, DXMember said:

what the hell are you cooling that with?

are you sure you're running CPU stress with Aida64 and not a GPU stress?

heat is the only limiting factor in practice, there are theoretically more stuff that limits you, but heat will stop you most of the times before you have to worry about other stuff

 

What? No....

YEs its the cpu, Stress cpu is the only box with a check ion the System Stability Test in ADIA 64.  My full system specs are in my sig

[Cyracus]

Well, some chips are just bad and no matter what you do you can only get so much out of them, some happily give you all the power in the world with practically nothing, this is the nature of the silicon lottery. After that it's a matter of voltage, clocks require voltage, voltage makes heat, too much heat makes throttling. Also too much voltage fries things, so don't feed it 1.6 volts and wonder why it's smoking. 

With Skylake 1.4v is were the risks start rising exponentially, but this is not a recommendation to throw the voltage all the way up there just because, find the max clock you want that your cooling can support, then pull back the voltage until it can't support the OC, then bump the voltage back up to the last stable level, test the hell out of it, and be happy

[not_Linus]

5 minutes ago, Cyracus said:

Well, some chips are just bad and no matter what you do you can only get so much out of them, some happily give you all the power in the world with practically nothing, this is the nature of the silicon lottery. After that it's a matter of voltage, clocks require voltage, voltage makes heat, too much heat makes throttling. Also too much voltage fries things, so don't feed it 1.6 volts and wonder why it's smoking. 

With Skylake 1.4v is were the risks start rising exponentially, but this is not a recommendation to throw the voltage all the way up there just because, find the max clock you want that your cooling can support, then pull back the voltage until it can't support the OC, then bump the voltage back up to the last stable level, test the hell out of it, and be happy

So do you think i should not try to push it anymore since I'm at 1.448v currently?

[Cyracus]

I would drop the voltage, I personally consider over 1.38v unsustainable, if it means your OC comes down well, better a little slower than a dead chip

[harrynowl]

52 minutes ago, TheGamingBarrel said:

Temperatures will help you OC more, the lower the better.

Voltages help, but they increase resistance so it increases temperatures.

No, increased temperatures increases the resistance and therefore reduces current, which can lead to more voltage required.

 

Say at 20c I get 25A and at 60c I get 20A. At 20c I need 4V at 60c I need 5V to reach the same power in a circuit.

[not_Linus]

Ok so i played with the core voltage and got better results.  4.6ghz @1.384v and only hitting 43c after 20 min stress test.