How does I7-4790k overlock work?

[Xellos2099]

Long story short, I got a i7-4790k coming in and I wish to know how does overclocking it work since i hear it is very different from the time i overclock my 2500k from in 2011. From what I understand 4790k have a base clock of 4.0ghz and when it go turbo mode it go to 4.2-4.4. I find it a little confusing since for my 2500k I just set mt stepping to 44 and it go 4.4 ghz all the time.

 

[Geforce man]

You can do the same thing, have it set to 4.4 all the time. the i5 2500k had a turbo as well, you just bypassed it by setting the core @ 44x100 (4.4Ghz)

 

[Xellos2099]

So for like example i set it to 4.5 and it will be at 4.5 and no turbo mode like 2500k? And second, think Corsair A70 is up to the task for it?

 

[alcoholbob]

Most 4790Ks can get up much higher than that with a slight voltage tweak. Most chips can hit 4.8 GHz with 1.3V or less. I have one on another rig that's running 4.8 GHz @ 1.18V which I believe makes it a golden sample of some kind. 4.8 GHz seems to be the wall for most of these chips and requires significantly more voltage to go higher. I had to increase it to 1.3V to hit 5GHz.

 

[buklau]

The only difference between 2500k and 4790k is the unicore a.k.a cache speed.

I have core set to 4800mhz, vcore 1.325v @ adaptive, offset +0.001v, unicore = 4300mhz, vcore = 1.2v @ adaptive, offset + 0.001v.

 

[guskline]

My 4970k under water runs 4.7Ghz solid.

 

[Ketchup]

Yep, same principle, just different numbers. You won't be getting a 1+ Ghz overclock on these, but I am very satisfied with the stock speed performance.

 

[Xellos2099]

yeah, even stock turbo of 4.4 is nearly enough for all games