i5-6600K Road to 5GHz Overclocking

[bcredeur97]

65C at 1.45V ? I havent heard that since the Sandybridge days...

 

Thinking about delidding my ivy instead of upgrading. I know I have a lot of headroom left for Overclocking if I can lower my temps!

 

but congrats on on 4.8 GHz. I wouldnt run a 14nm chip 24/7 like that but if you can find something around 1.35V that works, then great

[-rascal-]

I'm sorry what? Where do you get your info, voltage matters.... That's like saying if you over volt your electic curcuits they won't fry eventually when they will.

 

Both "Broadwell" and "Skylake" can tolerate higher Core voltages. In fact, you need more voltage to obtain the same frequency as you would with "Haswell" or "Devil's Canyon."

The drawback is, you end drawing a significantly amount more power -- you end with up something similar to what "Haswell" or "Devil's Canyon" would normally draw.

 

It also looks like Intel has moved the VRM's back onto the motherboard -- they are no longer integrated into the Processor itself.

 

KitGuri's i7-6700K and i5-6600K review

We tested a variety overclocking configurations to find the best settings for our chip. In order to keep temperatures in check and maintain voltages at what we are told are safe levels for 24/7 usage, the maximum CPU Core voltage was set at 1.40V. Empirical testing showed that Asus’ level 5 LLC profile resulted in a load core voltage closest to our selected 1.40V level – the 6700K chip was delivered 1.392V under full load with a 1.40V Core voltage and level 5 LLC settings.

 

Overclocker's Club, i7-5775C review

At 4.2GHz, you have to start applying additional voltage (1.255v) to get the speed stable and at 4.3GHz, you need an even higher level of voltage to finally reach a stable overclock. It took 1.375v to get stable at the 4.3GHz mark. A 4.4GHz speed can be done, but with this processor, voltages up to 1.45v were needed to get it benchmark stable

...

However, if you wanted a bit more, this chip loves to get fed a steady diet of voltage to make it happen, to a point.

 

Legit Reivews, i7-6700K review

We overclocked the Intel Core i7-6700K processor by simply increasing the multiplier and raising the core voltage on the processor when needed. By just raising the multiplier we were able to get to 4.6 GHz at 1.350V on the core before the system would crash in very CPU intensive benchmarks or tasks. For example our 1080p Handbrake encode would lock up at 90-95% at 4.7 GHz at 1.5V, which is the highest we felt comfortable taking this processor as temperatures would reach 98C even with the Corsair H105 water cooler installed.

 

Legit Reviews, i7-5775C review

 

We later learned that you can put more voltage to the processor without blowing it up right away and was able to get 4.4GHz stable at 1.475V. If you want to run 4.6-4.7GHz on one of these processors you need to run around 1.6V on the core and that is something we weren’t interested in doing and you’ll see why when we get to the power consumption section!

 

Guru3D, i7-6700K review

We reached 4900 MHz as bootable and, in the end, 4800 MHz stable but we needed a rather high ~1.450 Volts for that. Below, you can find a handful of results we ran with the overclocked settings as explained. For cooling we used a fairly affordable Corsair H110 liquid cooling unit.

...

temperatures when the CPU is overclocked with added voltage definitely seem to be a notch better opposed to Haswell but still can rise fast and hot. Our sample was not quite stable enough at 4.9 GHz but 4.8 GHz was stable on liquid cooling. At that level we needed a lot of voltage, 1.45 volts on the processor. 

 

Tom's Hardware i7-6700K, and i5-6600K review

One of our samples [i7-6700K] even cruised along at 4.9GHz using a 1.41V setting

 

 

If you read the review [i7-6770K review at Overclock.Net] you'll see the CPU vcore and the Cache volts are now linked and that is where the extra voltage comes from...

 

It was mentioned in several reviews that the safe voltage range for OC'ing is ~1.3 to 1.35 on Air/CLC and 1.45 on custom loops. It's mentioned that Skylake is not voltage-tied for OC'ing, rather Temps dominate and cause throttling. But it's also unknown how Phase Change/Dice/LN2 affects Skylake OC's

...

...

people arent taking into account that they moved the voltage regulators back onto the motherboards and off the cpu itself.

[skullbringer]

in theory yes. it will also speed you ram up. 

 

65C at 1.45V ? I havent heard that since the Sandybridge days...

 

Thinking about delidding my ivy instead of upgrading. I know I have a lot of headroom left for Overclocking if I can lower my temps!

 

but congrats on on 4.8 GHz. I wouldnt run a 14nm chip 24/7 like that but if you can find something around 1.35V that works, then great

 

Both "Broadwell" and "Skylake" can tolerate higher Core voltages. In fact, you need more voltage to obtain the same frequency as you would with "Haswell" or "Devil's Canyon."

The drawback is, you end drawing a significantly amount more power -- you end with up something similar to what "Haswell" or "Devil's Canyon" would normally draw.

 

It also looks like Intel has moved the VRM's back onto the motherboard -- they are no longer integrated into the Processor itself.

 

KitGuri's i7-6700K and i5-6600K review

 

Overclocker's Club, i7-5775C review

 

Legit Reivews, i7-6700K review

 

Legit Reviews, i7-5775C review

 

Guru3D, i7-6700K review

 

Tom's Hardware i7-6700K, and i5-6600K review

 

So, I've been at it for the last 20 hours or so and this is what I finally managed to get stable out of my i5-6600K:

185 MHz x 26 = 4810 MHz Core, x 24 = 4440 MHz Cache @ 1.45V

RAM: 3145 MHz 16-18-38 @ 1.353V (G.Skill Ripjaws4 2 x 4 GB rated at 16-18-38 @ 1.35V)

All settings above were configured manually and ran stable for 30 min of OCCT., see below

Some additional notes:

- PCH was set to 1.2V, otherwise the CPU would not initialize @ more than 4.6 GHz.

- CPU current capability was set to 140%, CPU power phase control to Optimized.

- Intel speedstep and turbo were turned off, BUT turbo gets automatically enabled at a BCLK of 140 MHz or lower. So I stayed above it for a static core clock.

- Max load temps were 88°C, idle temps are about 35°C. 14nm seems generate an insane amount of heat under load compared to idle.

- It would not boot @ 4.9 GHz, even with 1.55V. Either there is a wall or I did not find the right setting to adjust.

- Using a dedicated GPU made no difference.

- System specs: Asus Z170-A, Corsair RM750i, Samsung SM951 nvme, Corsair H100i GTX, Zotac GTX 980 Ti reference

 

[Jumper118]

So, I've been at it for the last 20 hours or so and this is what I finally managed to get stable out of my i5-6600K:

185 MHz x 26 = 4810 MHz Core, x 24 = 4440 MHz Cache @ 1.45V

RAM: 3145 MHz 16-18-38 @ 1.353V (G.Skill Ripjaws4 2 x 4 GB rated at 16-18-38 @ 1.35V)

All settings above were configured manually and ran stable for 30 min of OCCT., see below

Some additional notes:

- PCH was set to 1.2V, otherwise the CPU would not initialize @ more than 4.6 GHz.

- CPU current capability was set to 140%, CPU power phase control to Optimized.

- Intel speedstep and turbo were turned off, BUT turbo gets automatically enabled at a BCLK of 140 MHz or lower. So I stayed above it for a static core clock.

- Max load temps were 88°C, idle temps are about 35°C. 14nm seems generate an insane amount of heat under load compared to idle.

- It would not boot @ 4.9 GHz, even with 1.55V. Either there is a wall or I did not find the right setting to adjust.

- Using a dedicated GPU made no difference.

- System specs: Asus Z170-A, Corsair RM750i, Samsung SM951 nvme, Corsair H100i GTX, Zotac GTX 980 Ti reference

 

pg]

that looks OK then. I wouldn't run it at that for normal use, but as long as your happy with it and its stable.

[Curufinwe_wins]

I'm sorry what? Where do you get your info, voltage matters.... That's like saying if you over volt your electic curcuits they won't fry eventually when they will.

Sigh... The number doesn't matter. What matters is what the safe range is and how your voltage fits within that.

What you are saying is tantamount to well since Europe runs at 220/240V at the wall all their shit must blowup all the time compared to the US 120V lines....

Literally means nothing because different transformers exist for the parts making them suited for completely different voltages.

Intel has told their reviewers that sub 1.5V is perfectly safe (provided they can cool it).

[Lays]

Sigh... The number doesn't matter. What matters is what the safe range is and how your voltage fits within that.

What you are saying is tantamount to well since Europe runs at 220/240V at the wall all their shit must blowup all the time compared to the US 120V lines....

Literally means nothing because different transformers exist for the parts making them suited for completely different voltages.

Intel has told their reviewers that sub 1.5V is perfectly safe (provided they can cool it).

 

 

Apparently the stock volts are anywhere from 1.3-1.4v from the reviews I've seen, can you link me to where you saw the 1.5v stuff?

 

Just so I can link it to dumb people that don't do research ?

[Tomuks]

I see you are doing a great job, I am using 6700k on asus hero board and now have 4500mhz on 1,26V, just with multi,having max temps under AIDA64 stress about 67C, but will try later on bclk as well

[topkek123]

deleted content

[Imakuni]

27 minutes ago, cull3r said:

i dont want to use my pc on 1,3V 24/7

There's no problem in running 1.3v 24/7. At all. I do it (while running Prime95 in the background), and so long as your temps are in check, you'll be perfectly fine.

[Dawid94]

So mine is stable after 6 h stresstest on aida64 doesnt go over 1.30 V and 58 degrees think i got a golden one (using kraken x61) 

[GDRRiley]

On 8/7/2015 at 1:02 PM, skullbringer said:

So I am currently at overclocking my i5-6600K on an Asus Z170-A.

Coming from X79 and berfore that Z77, I still dont quite fully understand the Z170 bios and all of its components. So I need your help...

 

1. Is there a way to prevent the cpu from going back to stock clock at the desktop? I have intel speed step and c-states disabled, and turbo enabled. Is there another setting I need to configure?

 

2. I am currently stuck at 4.8GHz @ 1.45V. It passed 5 minutes of AIDA64 stress test and stayed under 65C. (H100i GTX) What Voltage settings apart from the cpu core/cache voltage are worth rising to improve system stability? I played around a bit with pch, vccio and system agent voltage, seemingly without any big affect, didnt go over 1.2V on any of them though. What exactly are all these voltage settings and which should I adjust?

 

you may kill your CPU. I wouldn't push it past 1.40V.

[Schyken]

On ‎8‎/‎7‎/‎2015 at 1:02 PM, skullbringer said:

So I am currently at overclocking my i5-6600K on an Asus Z170-A.

Coming from X79 and berfore that Z77, I still dont quite fully understand the Z170 bios and all of its components. So I need your help...

 

1. Is there a way to prevent the cpu from going back to stock clock at the desktop? I have intel speed step and c-states disabled, and turbo enabled. Is there another setting I need to configure?

 

2. I am currently stuck at 4.8GHz @ 1.45V. It passed 5 minutes of AIDA64 stress test and stayed under 65C. (H100i GTX) What Voltage settings apart from the cpu core/cache voltage are worth rising to improve system stability? I played around a bit with pch, vccio and system agent voltage, seemingly without any big affect, didnt go over 1.2V on any of them though. What exactly are all these voltage settings and which should I adjust?

 

I had a system with an i5 6600k OC @5.2GHz. Granted, I could ramp it up higher, but it's completely unnecessary. The way I did this was liquid nitrogen phase change and just slowly increasing the configuration in the BIOS.

-EDIT- Also, to clarify on my thermal contact solution. Instead of thermal paste, I replaced both the thermal paste INSIDE the processor under the lid and on top of the lid under the cooling block. I used a solution I made of 82% Mercury and 18% thickening agents to prevent it from being liquid past melting point.

[Mortjep9530]

is it normal that my 6600k is running at 4.5GHz wiht a voltage of 1.13V and running at 47C max temperature on a burn Test with a kraken X61 cooler?