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From Ivy Bridge to Devil's Canyon Overclocking. Any Help?

Morais
Level 7
Hi guys,

I recently bought a new MB and CPU, from an Asrock Z77 Pro4 with an 3570k I went to an Asus Maximus VII Ranger and an 4690k.

The 3570k was fairly easy to overclock, just set the multiplier to whatever frequency you want and adjust the vcore accordingly.
I wasn't that lucky with the 3570k, it needed around 1.195V for 4.2GHz and around 1.33V for 4.5GHz. And if that wasn't enough it was a very hot chip, reching around 58-60ºC at stock speed in BF4.

Now with this 4690k that I got I am much happier, It'a a lot cooler, not passing 43ºC in BF4 at stock speeds.

But now comes the time to overclock, and boy is it a lot more complex.....
My previous MB had like 2 to 4 options I had to tinker with in order to overclock, but on this board??
I don't even dare count them 😛

So I was wondering if anyone was willing to help me overclock my cpu beyond multiplier and vcore adjustments, I'm talking uncore speeds, Vrings etc....


My system spec are under my nickname 😉


Any help is greatly appreciated!

Thank's in advance,
-Morais
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19 REPLIES 19

NemesisChild
Level 12
Pretty much the same with DC, just adjust the multiplier and Vcore.
You can basically leave all other options on auto.
However, you might want to adjust the LLC under Digi to maybe high or ultra.
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Morais
Level 7
Thank's for the reply Nemesis, but what about the uncore?

I read that it is beneficial to have it on a 1:1 ratio with the core clock, is that correct?

Morais wrote:
I read that it is beneficial to have it on a 1:1 ratio with the core clock, is that correct?

It's slightly beneficial but not so that you would notice it outside of benchmarks that test on-die cache.

In fact even Intel didn't set it to 1:1 by default; the stock Cache Ratio for the 4790K is 40 (4GHz).

---

As for overclocking set LLC to 7 or 8 and then use a software overclocking tool like Intel XTU or ThrottleStop* (AI Suite is bloated :(). Personally I prefer ThrottleStop because you don't have to install anything but XTU works just as good.
*Note with TS to delete the INI file after a failed overclock attempt to reset your settings.

Once you have your stable OC, set the adjustment mode to Adaptive in the UEFI and key in your Voltage & Multiplier('s).

Overclocking has gotten so simple my sister could do it (see below), the hard part annoying part is stress testing.

jab383
Level 13
Hi, morais

There is no benefit from having cache/uncore/ring clock any higher than core clock, but it often doesn't get even that high. I try to limit cache voltage to be no higher than Vcore, or maybe .05 volts higher, then advance the cache multiplier until it throws a blue screen. That often happens with cache clock 200 to 300 Mhz lower than core clock. Cache clock in that range gives noticeably quicker CPU performance than the stock clock rate, but there are diminishing returns for anything higher. There is rather little of the CPU chip powered by cache voltage, so there is very little contribution to heat.

As NemesisChild mentioned, an important difference from IB to DC is that regulators for core, cache and integrated graphics voltages have been moved onto the chip. The motherboard provides only Vccin and DRAM power. The one load line compensation (LLC) applies to Vccin. A setting near the highest usually does well when overclocking.

Jeff

Morais
Level 7
Thank's for the reply Jeff 😉

I really thought it was a lot more complex.

I guess I'll try to do the following:

Set multiplier to 45x
Set Vcore to 1.25V
Set LLC to High/Extreme

And if it's stable I'll try to lower the vcore.....

Is this more or less right?

Morais
Level 7
I've been tinkering in the bios and decided to start of just by finding the lowest vcore for 4.2GHz.

This seems to be it:



Just passed 25 minutes of Aida64 stress testing with temperatures around 45ºC under full load 🙂

Morais
Level 7
That software looks very interesting for testing quick settings, I think I'm going to try it. 🙂


In the meantime, 4.5GHz @ 1.17V is lokking good with a maximum temperature of 52ºC under full load (averages are around 44ºC).

http://i.imgur.com/q1gZNpy.png

Morais
Level 7
I have another question.

From what I've read the cpu input voltage should have at least on offset of +0.80V on the vcore, meaning if the vcore is 1.2V the IV sould be around 2V.

Is that correct?

+800mV? That's a kinda high. Everything I've ever read has had it at +400mV.

SVID, VCCIN, FIVR-IN, VR Input, CPU Input Voltage or whatever you want to call it should be around 1.8-ish.

Just set LLC to 7-9 and leave the VCCIN alone unless your going to really be turning your voltage up more than +100mV (0.1V). -- So if your vCore is 1.2V than the default of 1.8V VCCIN is perfectly fine.

Remember VCCIN is the voltage your feeding to the CPU's integrated voltage regulator. There is a sweet spot (for converting that voltage to all the other ones) and you can totally burn the VR out if you give it too many volts.