help in oc 2500K to over 5 Ghz on GA z68 ud7 b3

[stephanisk]

hello,

Let me introduce myself. I am not new to overclocking but pushing this 2500K to over 5 ghz stable is being a little challenge.

My system:
i5 2500 K
GA z68 ud7 b3 bios f11a
Mushkin ram Redline pc3 12800 7 9 8 24 1.65V
2 x ocz vertex 3 128 gb in raid 0
2 x seagate barracuda 7200.14 2TB in Raid 0
2 x HD5870 xfx running at stock
power supply corsair AX 850
aquaero 5 pro for running my pumps

My cooling system consists of one TEC chiller, my waterloop only for cpu runs at -8 degrees and is powered by a seperate meanwell power supply

My ram, graphic cards, and hdd and aqauero are all watercooled on ambient temperature

Now my question?
Does anyone have settings for an overclock over 5 ghz for :
- Vcore at 1.525 now
- Qpi VTT voltage (1.050 normal) now set to 1.2
- System Agent Voltage (0.925 normal) now set to 0.985
- pch core (1.050 normal ) now set to 1.16
- cpu pll ( 1.800 normal ) now set to 2.0

And i read about what all of these need to do exactly but i would appreciate someone who knows to tell me exactly what every voltage regulator regulates )) , as i want to go over 5 ghz i think i will need to finetune these aswell so that is why i need to know a little more. Below 5 ghz if you leave it just on auto it all works fine but from over 5 everything works together very closely ( i guess ) so all help is welcome here

btw: i loaded my xmp profile of the ram and that sets voltage to 1.65 but on advanced voltage settings my DRAM VOLTAGE is normal 1.5 and setting on auto? is that good?

Thanks for all help

 

[redeemer]

You can leave PLL @ 1.9v
Enable LLC to the extreme or maximum setting
Try increasing the vcore to from 1.38-1.4v

don't mess with the BLCK just change the ratio to 50 leave turbo boost alone

just leave the XMP setting alone for the ram, if its stock is 1.5v do not increase it to 1.65v

 

[stephanisk]

Hi redeemer,

Vcore at 1.525 now and more or less stable at 4987

i am looking for llc (load line calibration) but i can not find it here???? i have multi steps load line but i put that to disabled, cause if i am write it will lower vcore when not under full load so that is not good for testing purposes.

my ram is at profile1 stock 1.65V i put on auto in the voltage section.

Any idea where i should find llc???? all my voltage regulators i summed up in my start thread

 

[redeemer]

50x100 = 5.0GHz
VCore = 1.455
LLC = Level 6
Internal CPU PLL Overvoltage = Enabled
Real-Time Ratio Changes in OS = Disabled (Optional)
Intel® Turbo Boost Tech. = Disabled
CPU Enhanced Halt (C1E) = Disabled
C3/C6 State Support = Disabled
CPU Thermal Monitor = Disabled
CPU EIST Function = Disabled


There is no way you need so much vcore 1.5v to reach 5.0Ghz on the 2500k you can seriously damage your chip in the long run

 

[stephanisk]

with llc you mean the multi steps load line????

 

[redeemer]

with llc you mean the multi steps load line????

yup

 

[stephanisk]

yup, that seems to be a lot more stable at lower vcore, thx. i put load line 6 , can i put to load line 10 is that maximum load line calibration or does this thing work differntly to what i assume?

 

[stephanisk]

As stable as i can check now, lets test how far beyond 5 i can push this baby. I already tried 1.525 vcore and my cooling system was still holding so lets see how much faster this thing can run!!!
Thx redeemer for fixing my llc problem.

 

[nikoli707]

not every level of llc is the same for each different motherboard model and make. your going to have to manually check each level and boot back in to windows and note the difference between the bios set vcore voltage and then the reported min/max voltage when idle and under full load stress. i find that intel burn test set to maximum stress is a quick way to check the min/max voltage. eventually you will find that sweet spot where your getting the load voltage where you want it without the idle voltage being too far away or too high.

 

[redeemer]

As stable as i can check now, lets test how far beyond 5 i can push this baby. I already tried 1.525 vcore and my cooling system was still holding so lets see how much faster this thing can run!!!
Thx redeemer for fixing my llc problem.

No problem but try to use lower vcore don't let the chip run @ 1.5+ for a long time

 

[stephanisk]

i am trying now to get it stable at 5.2 Ghz and i am close but i have to push 1.525 through this chip with a load line at lvl10 meaning idle goes to 1.586 and load at 1.536 ( report cpu-z ), i am trying to up different voltage to see if i can get stable without upping vcore more:
- Vcore at 1.525 now
- Qpi VTT voltage (1.050 normal) now set to 1.24
- System Agent Voltage (0.925 normal) now set to 0.945
- pch core (1.050 normal ) now set to 1.10
- cpu pll ( 1.800 normal ) now set to 1.9

I was wondering though if you can maintain the chip at under 80 degrees under full load stress test, and at about 0 to 10 degrees when idle, is it than such a big problem to pust 1.6 V for example through this chip. Honestly, i dont really care about the chip running for only 6 months, i just want it to run as fast as my system lets me. My build has costed me over 2500 EUR, all the computer parts itself i buy second hand, so if i burn it in 3 months due to high power, so be it, i will find myself a new second hand chip for about 120 EUR. But my question actually is how long would it run at these high voltages ( with controlled temps ofcourse )

If you want to see my build, here is my build gallery, the latest pics of the complete working system are not on there yet as i am doing this now but you will get an idea of how it looks like : http://forum.highflow.nl/f34/subzero-cube-14321/index2.html

Thx again for all the help. You've been great.

 

[redeemer]

The chip will have a limit a barrier it cannot past no matter how much voltage you give it. As for longevity..its impossible to tell you how long your chip will last at 80c @ 1.54v. Symptoms of Electromigration would be crashing as your chip will be unable to keep your overclock at the required voltage, this might require you to either increase voltage or most likely decrease your clock and vcore. However Electromigration takes time how long..again not sure.

 

[stephanisk]

It seems like i have a real problem pushing it over 5 ghz, it seems to crash always in a torture test even with 1.55 Vcore and load line 10, then i get over 1.65V in idle and in load 1.586 but crashes still, lets say after a minute of 6 -7 in prime. Would i have to up other voltage to compensate for this, or is it still the Vcore that causes the problem?