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

[Morais]

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

[Morais]

Quad5Ny wrote:
+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.

Thank you for the explanation 😉

But I found something quite weird. I set the multiplier to 46 and the vcore to 1.210V, I get into windows fine, run Aida stress test for about 15 minutes and play BF4 for about half an hour. Then I went to eat dinner, when I came back I tried to play BF4 again but half way through the loading screen I got a bsod out of nowhere (bbcode 124, it's vcore I think).

Could there be something wrong with my windows installation or something?

[NemesisChild]

BF4 is a CPU intensive game. I can pass RealBench and other stress tests fine, but fail in BF4.
I can tell you that 1.210v for 4.6GHz is probably too low, unless you have an extremely good chip.

[Morais]

NemesisChild wrote:
BF4 is a CPU intensive game. I can pass RealBench and other stress tests fine, but fail in BF4.
I can tell you that 1.210v for 4.6GHz is probably too low, unless you have an extremely good chip.

It wasan't that what I found strange, It was the fact that I played for about half an hour without issues andar then an hour later when I tried to play again the PC crashed in the loading screen with the same clock and voltage.

What I do knkw is that from 4.5Ghz onwards the requiered vcore goes up exponencialy.

4.5Ghz needs 1.175v
4.6 GHz needs 1.220v
4.7Ghz requiered around 1.275v. 😛

[X-ROG]

NemesisChild wrote:
BF4 is a CPU intensive game. I can pass RealBench and other stress tests fine, but fail in BF4.
I can tell you that 1.210v for 4.6GHz is probably too low, unless you have an extremely good chip.

That's interesting because RB stress test should load every part of your hardware to the max. Seems there's a unique scenario where the system load in BF4 creates instability. I can only guess because you've got sound/internet/USB inputs active, as well as graphics load is different from OpenCL load.

Morais wrote:
What I do know is that from 4.5Ghz onwards the requiered vcore goes up exponencialy.

4.5Ghz needs 1.175v
4.6 GHz needs 1.220v
4.7Ghz requiered around 1.275v. 😛

This is normal - you're hitting a wall over 4.5 so you have to force it.

[Quad5Ny]

4.7GHz @ 1.275V is a dam good overclock considering most Haswell/Devils Canyon CPU's need 1.3V+ to hit 4.7. 🙂

[jab383]

I've seen very few 4790K that could run x46 stable at 1.2Vcore. The 124 BSOD code indicates that yours is close, because it ran and played BF4, but not solidly stable. Try adding a little more Vcore, to maybe 1.225, and repeating the tests. That would still be a better 4790K than mine, which takes 2.50Vcore to work at x46.

Note that Aida64 is a great monitor program, but its stress tests aren't very stringent. Realbench is better and can indicate a 24/7 stable profile good for most applications. A conclusive test for me is OCCT - the large data set test. A few minutes (3-5) there are enough to show good or bad.

Jeff

[Morais]

Quad5Ny wrote:
4.7GHz @ 1.275V is a dam good overclock considering most Haswell/Devils Canyon CPU's need 1.3V+ to hit 4.7. 🙂

Yeah, I guess I got a bit lucky, and better still this chip is really cool, max temperature at 4.7GHz with 1.275V in x264 was 59ºC (yes the room temp. was a bit cold, around 16-17ºC) :cool:

jab383 wrote:
I've seen very few 4790K that could run x46 stable at 1.2Vcore. The 124 BSOD code indicates that yours is close, because it ran and played BF4, but not solidly stable. Try adding a little more Vcore, to maybe 1.225, and repeating the tests. That would still be a better 4790K than mine, which takes 2.50Vcore to work at x46.

Note that Aida64 is a great monitor program, but its stress tests aren't very stringent. Realbench is better and can indicate a 24/7 stable profile good for most applications. A conclusive test for me is OCCT - the large data set test. A few minutes (3-5) there are enough to show good or bad.

Jeff

I still have to be a little more patient when testing the stability but it seems that the sweetspot for 4.6GHZ is around 1.218V. 🙂

[Morais]

Hi guys,

I'm bumping this topic with an issue.

Currently I'm trying to get the best score I can in GeekBench 3, I can bench it at 4.8GHz @ 1.37V all day long with excelent temperatures, however I can't do a single run a 4.9GHz even at 1.45V+.

Does my cpu just have a super aggressive wall at 4.8GHz or is there something else I can do in the BIOS beside tinkering with Vcore and LLC?


Thank's in advance!
Morais

[NemesisChild]

Be thankful you can do 4.8GHz, you've undoubtedly hit the silicone lottery wall.

[Morais]

NemesisChild wrote:
Be thankful you can do 4.8GHz, you've undoubtedly hit the silicone lottery wall.

Damn this suck so much lol

Well I guess that 4.8GHz+ will be reserved only for SuperPi Runs 😛