[i5-6600k] I really need help with my OC and Vcore

Blayzify · Jan 29, 2017

Specs: CPU: i5-6600k
Cooler: COOLAIRMASTER 212x (better version of the evo)
Powersupply: Rosewell photon 550 Gold+

So I want at least a 4.2 OC on my pc and I dont know what the best voltage I should be at.

Right now it is at 1.2 and temps are fine and it seems to be fine but idk what the optimal voltage I should use.

Here is a stress test at 4.2hgz 1.2voltage: https://gyazo.com/e9262fefcad472bca5eecc89ff6ea7cf

I would like to go higher at 4.4ghz but I want to figure out a good 4.2 OC first

Blayzify · Jan 29, 2017

burnhamjs · Jan 29, 2017

Blayzify :

Optimal voltage will depend on you specific CPU and varies with each piece of silicon. It looks like you only ran Aida64 for 5 minutes for a stress test? That would not be a valid stress test. There are differences in opinion on what defines stable as well as what to use for stability testing. I like to use OCCT.

Here is what I recommend:
Load CPU-Z so you can make sure your BIOS settings are applied and to monitor Vcore.
Load HWMonitor to keep an eye on core temps.
Load OCCT to conduct stability and max temp tests.

I would turn off turbo, EIST, and all energy saving options (c-states) while overclocking.

Set your multiplier to 42 and run OCCT-Small Blocks for 30 minutes and check temps. If the temps are okay (<80C) run OCCT-Large for 3 hours to make sure you can run stable. If you get a blue screen or an error in OCCT you can bump you Vcore up a bit at a time until you are stable. With this you should be able to find stability at 4.2G

Now when you are ready to try to push a little higher, raise your multiplier to 43, repeat above. At some point you will note to gain stability you need to push your Vcore up to the point temps are exceeding 80C. When this occurs back your multiplier down by one. Personally, I don’t like to push my Vcore above 1.35V.

When you find the max multiplier your CPU can run stable, with the lowest Vcore, and temps <80C this is your max OC. Now you can re-enable EIST and perhaps C-1E c-state. Also, now that you know the vcore required you could use adaptive voltage and apply any required offset to get vcore to what you need to be stable.

Another note: While running these tests I also monitor Vcore in CPU-Z. If you see Vcore in CPU-Z is 0.01V or more under the Vcore that you set in BIOS then you are getting Vdroop and should apply some LLC. You want enough LLC to minimize Vdroop without creating Vboost. (Vboost is when you see the voltage in CPU-Z exceeding what you set in BIOS).

Blayzify · Jan 29, 2017

burnhamjs :

Blayzify :

Optimal voltage will depend on you specific CPU and varies with each piece of silicon. It looks like you only ran Aida64 for 5 minutes for a stress test? That would not be a valid stress test. There are differences in opinion on what defines stable as well as what to use for stability testing. I like to use OCCT.

Here is what I recommend:
Load CPU-Z so you can make sure your BIOS settings are applied and to monitor Vcore.
Load HWMonitor to keep an eye on core temps.
Load OCCT to conduct stability and max temp tests.

I would turn off turbo, EIST, and all energy saving options (c-states) while overclocking.

Set your multiplier to 42 and run OCCT-Small Blocks for 30 minutes and check temps. If the temps are okay (<80C) run OCCT-Large for 3 hours to make sure you can run stable. If you get a blue screen or an error in OCCT you can bump you Vcore up a bit at a time until you are stable. With this you should be able to find stability at 4.2G

Now when you are ready to try to push a little higher, raise your multiplier to 43, repeat above. At some point you will note to gain stability you need to push your Vcore up to the point temps are exceeding 80C. When this occurs back your multiplier down by one. Personally, I don’t like to push my Vcore above 1.35V.

When you find the max multiplier your CPU can run stable, with the lowest Vcore, and temps <80C this is your max OC. Now you can re-enable EIST and perhaps C-1E c-state. Also, now that you know the vcore required you could use adaptive voltage and apply any required offset to get vcore to what you need to be stable.

Another note: While running these tests I also monitor Vcore in CPU-Z. If you see Vcore in CPU-Z is 0.01V or more under the Vcore that you set in BIOS then you are getting Vdroop and should apply some LLC. You want enough LLC to minimize Vdroop without creating Vboost. (Vboost is when you see the voltage in CPU-Z exceeding what you set in BIOS).

A few things, how do I turn off turbo and why should I? doesnt it make my pc faster
how much LLC do I Add? My voltage I set is 1.25 and is 1.247 when idol and i get 1.17 in OCCT test

what is eist

Also with a 3 hour stress test my pc never went above 60 degrees C

burnhamjs · Jan 29, 2017

Blayzify :

Turn off turbo while you OC so you can control everything. You don’t want your freqs and voltage varying while you are trying to find the max stable speed.

So when you set Vcore at 1.25 the actual voltage is 1.247 when idle, but under load it drops to 1.17. That is 0.077Vdroop. You add enough LLC so that Vdroop is closer to 0, but you don’t want to cause a large Vboost either.

EIST is Enhanced Intel SpeedStep Technology is a power and thermal management technology developed by Intel. This will drop Vcore and Freq when not under full load. Again, when you are OC’ing you disable this so you are controlling and monitoring all parameters.

Which test did you run for 3 hours to check temps? OCCT-Small seems to work the best for me for checking temps – usually a 30 min test is adequate. OCCT-Large is good for checking stability – 3 hours is recommended.

Blayzify · Jan 29, 2017

burnhamjs :

Blayzify :

Turn off turbo while you OC so you can control everything. You don’t want your freqs and voltage varying while you are trying to find the max stable speed.

So when you set Vcore at 1.25 the actual voltage is 1.247 when idle, but under load it drops to 1.17. That is 0.077Vdroop. You add enough LLC so that Vdroop is closer to 0, but you don’t want to cause a large Vboost either.

EIST is Enhanced Intel SpeedStep Technology is a power and thermal management technology developed by Intel. This will drop Vcore and Freq when not under full load. Again, when you are OC’ing you disable this so you are controlling and monitoring all parameters.

Which test did you run for 3 hours to check temps? OCCT-Small seems to work the best for me for checking temps – usually a 30 min test is adequate. OCCT-Large is good for checking stability – 3 hours is recommended.

so how much LLC should I add
and when I find a stable clock should I turn boost back on

And how do I turn off EIST

also yes I ran the stress test exactly like you told me too

burnhamjs · Jan 29, 2017

Blayzify :

You need to look in your BIOS (or you mobo manual) to see how to turn off Turbo and IEST, and C-states. Not sure what levels of LLC are available to you. Start with the mid-level and see if you vcore remains the same at idle and under load.

What mobo do you have?

Blayzify · Jan 29, 2017

burnhamjs :

I have a gigabyte z170 gaming 3
and for LLC it doesnt have small mediem and high for level it has number entry

Blayzify · Jan 29, 2017

also should I use this to overclock instead of BIOS https://gyazo.com/6e53a06ce8b4dfc524076c7c44a8922d

burnhamjs · Jan 29, 2017

Blayzify :

I prefer to use BIOS instead of any Windows based applications, so I have no experience using XTU for OCing.

Gigabyte Gaming 3 is what I have as well.

Turbo, C-states, and EIST are all under Advanced CPU Core Settings.

LLC should have AUTO, NORMAL, or HIGH. Set to HIGH. This is under Advanced Power Setting -> CPU Vcore Loadline Calibration.

burnhamjs · Jan 29, 2017

Here are the setting I used during OC'ing:

----For the CPU:
[1]-CPU VCore at 1.290 V,
[2]-CPU Core Ratio at 46,
[3]-Uncore Ratio at 45,
[4]-FCLK Frequency For Early Power 1000 MHz
[5]-CPU VCore Loadline Calibration (LLC) on High
[6]-Internal Graphics Disabled

-----For the memory:
[7]-Extreme Memory Profile (X.M.P.) on "Profile 1"
[8]-Memory Enhancement Settings to "Relax OC"

-----Advanced CPU Settings [Energy Savers]
[10] Intel Turbo Boost Technology DISABLED
[11] CPU EIST DISABLED
[12] CPU Enhanced Halt (C1E) DISABLED
[13] C3 State Support DISABLED
[14] C6/C7 State Support DISABLED
[12] C8 State Support DISABLED
[13] Package C-State Limit AUTO

PC Specs:
MOBO: Gigabyte Z170 Gaming 3 (F6 BIOS)
CPU: i5 6600k
CPU Cooler: EVO 212
RAM: 16GB Corsair Vengeance DDR4 3000MHz
GPU: Gigabyte GTX960OC 2GB

burnhamjs · Jan 29, 2017

After I found my max OC and stable voltage, I enabled EIST and C1. Here are my current settings and the charts from my overclocking.

----For the CPU:
[1]-CPU VCore at NORMAL,
[1a] DVID at -0.010V
[2]-CPU Core Ratio at 46,
[3]-Uncore Ratio at 45,
[4]-FCLK Frequency For Early Power 1000 MHz
[5]-CPU VCore Loadline Calibration (LLC) on High
[6]-Internal Graphics Disabled

-----For the memory:
[7]-Extreme Memory Profile (X.M.P.) on "Profile 1"
[8]-Memory Enhancement Settings to "Relax OC"

-----Advanced CPU Settings [Energy Savers]
[10] Intel Turbo Boost Technology DISABLED
[11] CPU EIST at AUTO
[12] CPU Enhanced Halt (C1E) at AUTO
[13] C3 State Support DISABLED
[14] C6/C7 State Support DISABLED
[12] C8 State Support DISABLED
[13] Package C-State Limit AUTO

Blayzify · Jan 29, 2017

burnhamjs :

Blayzify :

I prefer to use BIOS instead of any Windows based applications, so I have no experience using XTU for OCing.

Gigabyte Gaming 3 is what I have as well.

Turbo, C-states, and EIST are all under Advanced CPU Core Settings.

LLC should have AUTO, NORMAL, or HIGH. Set to HIGH. This is under Advanced Power Setting -> CPU Vcore Loadline Calibration.

for me it makes me enter a number fir Vcore load line?

burnhamjs · Jan 29, 2017

Blayzify :

burnhamjs :

for me it makes me enter a number fir Vcore load line?

What BIOS are you running? Post a screenshot.

burnhamjs · Jan 29, 2017

should look like this:

Blayzify · Jan 29, 2017

burnhamjs :

Ok I basicly copied everything from you but instead im at
4.3ghz
1.265vcore
LLC HIGH
and everything else the same as you but the only thing I couldnt find was the c state stuff. I cant find Advanced CPU Settings [Energy Savers] in the bios

OH and I never gave you my specs:
i5-6600k
CM 212x (Newer version of evo)
Gigabyte z170 Gaming 3
Rosewell PHOTON 550W GOLD PLUS
HYPERX FURY BLACK 2133mhz 8gb
MSI GTX 960 4gb

our specs are almost Identical lol

burnhamjs · Jan 29, 2017

Blayzify :

you need to scroll down under Advanced CPU Core Settings to see C-states and EIST.

Blayzify · Jan 29, 2017

burnhamjs :

ok Ill do that in a little now that I know where that is.

So here is what the stress test looks like a 4.3ghz and 1.65vcore
(I have LLC in high)
durring the stress test it shows that I have a 1.48vcore???? https://gyazo.com/a3334419611a662b10d1593492842436

burnhamjs · Jan 29, 2017

FYI - SpeedStep allows your Vcore and Freq to decrease at idle (for example Vcore will drop to 0.744V or less and freq will drop to 800MHz. C-states are "levels of sleep" the computer will go into at idle. This article explains a bit more - http://www.dungeoner.com/en/overclocking-and-intels-power-management-settings-eist-c-states-turbo-boost/

burnhamjs · Jan 29, 2017

Blayzify :

Where are you seeing a 1.65Vcore or a 1.48Vcore? CPU-Z shows 1.284Vcore.

In HWMonitor you can minimize the Temperatures at the top and the fans - then you could capture Vcore Min/Max in HWMonitor.

Blayzify · Jan 29, 2017

burnhamjs :

Yeah but my vcore is dropping at full load also. and
do you think I can pull around a 4.5/4.6ghz OC like you if my temps are below 70degrees C at stress?

burnhamjs · Jan 29, 2017

Blayzify :

Perhaps, but I'm concerned with the Vcore you are reporting. I like to keep Vcore 1.35V or less. 1.4 would be OK, but 1.48V and 1.65 are too high. Please double check this. You don't want to fry you CPU by exceeding 1.4V.

Blayzify · Jan 29, 2017

burnhamjs :

Blayzify :

Perhaps, but I'm concerned with the Vcore you are reporting. I like to keep Vcore 1.35V or less. 1.4 would be OK, but 1.48V and 1.65 are too high. Please double check this. You don't want to fry you CPU by exceeding 1.4V.

Sorry I ment my Vcore was 1.248 at max load and is set to 1.265 in bios

burnhamjs · Jan 29, 2017

Blayzify :

Ahh, that sounds much better.

So if you find you are stable at 4.3GHz with Vcore set to 1.265, increase your multiplier to 44 and see how stability testing goes. Likely you will have to bump your Vcore up a bit to keep stability. If you can get 44 stable, try 45…

At some point you will get OCCT errors or blue screen. At that point you need to increase Vcore a bit. But at some point increasing Vcore will cause your temps to go above 80C. You need to find that point where you can have the highest multiplier, with Vcore 1.35V or less, and keeping temps <80 during stress testing.

Blayzify · Jan 29, 2017

burnhamjs :

Blayzify :

Ahh, that sounds much better.

So if you find you are stable at 4.3GHz with Vcore set to 1.265, increase your multiplier to 44 and see how stability testing goes. Likely you will have to bump your Vcore up a bit to keep stability. If you can get 44 stable, try 45…

At some point you will get OCCT errors or blue screen. At that point you need to increase Vcore a bit. But at some point increasing Vcore will cause your temps to go above 80C. You need to find that point where you can have the highest multiplier, with Vcore 1.35V or less, and keeping temps <80 during stress testing.

Ok this sound good. so my vcore is set at 1.265 but when I run the stress test and my pc is under load the vcore is only 1.248 in cpuid-z

[i5-6600k] I really need help with my OC and Vcore

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Commendable

Share this page