i5-3570k: advice for 5 GHz under 1.35v

Hardware Hub Overclocking
1

Hey all.

I currently got my  i5 3570k to 4.8 GHz @ 1.302v but I am having some trouble getting to 5 GHz. I am hoping there are some tweaks I can do to make it without cramming voltage down it's throat. I want to stay under 1.35v. 

So far I have only adjusted the boost clock multiplier and boost clock voltage. I like the power savings when I'm not playing games or etc.

Specs

I5 3570k

Asrock z77 extreme 4

16gb G skill sniper [email protected] (4x4)

**using aida64 for stability test... Not prime 95

Any input is appreciated. Thanks.

2

well...considering that I need 1.5 volts to run 4.8 ghz stable on my 4670K I think you have one hell of a chip. I find it hard to believe you can hit 5 ghz under 1.35 volts, thats insane, I have never seen such a thing. Then again, it is an ivy bridge cpu, so the voltage might be different from my Haswell (since they changed a lot of the architecture) 

How is stability at 4.9 Ghz? because if you can't hit 4.9 ghz at 1.35 volts it will not happen at 5 ghz. Once you get past a certain point, it starts to take a large amount of extra voltage to reach the next 100 mhz. I run 4.6 ghz stable at 1.33 volts, but 4.5 ghz runs stable at 1.29 volts, but I need 1.4 volts to run 4.7 ghz, and 1.5 volts for 4.8. For 5 ghz I would probably need 1.65 volts (which is uncomfortably high)

3

yeah, the ivy bridge is a bit easier to overclock. I had mine at 4.4 without increasing voltage. I know people have mentioned tweaking other clocks in order to squeeze out a little more out of the CPU, but I haven't fiddled too much with those. I was hoping someone could chime in on that.

4

Wow you must have a nice chip, my 3570k was terrible, could barely do 4.5Ghz @ 1.35v!

5

This is the best guide I have been able to find for Ivy bridge. I haven't found anything more detailed. 

http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end

 

6

Thanks for the post. I will take a look. I mostly found more basic guides for multiplier and frequency only... Sorry for the late response.

7

Well, this tidbit of advice won't help with keeping voltage down, but it'll help with temperatures. Have you tried delidding?

8

I haven't.. don't even recognize it.. but my issue hasn't been heat.. just stability. Heat is far below TDP but it just crashes from instability. I don't want to cram voltage down its throat either because I intend to keep this thing for at least 2-3 more years. I will probably just upgrade the graphics if I feel my GTX 680 4gb isn't cutting it.