6700k Overclocking VCore

[hahapingazzz]

Hello, so I'm overclocking my 6700k and I managed to get 4.4ghz stable at 1.315 vcore, but in order to get it stable at 4.5ghz I've had to bump the vcore all the way up to 1.365

Is this normal? I've seen that other people have managed 4.6ghz at just 1.3 vcore.


Also what is the maximum vcore I shouldn't exceed on a 6700k? I've seen people say anything below 1.4 is fine and others say to never go above 1.35


Thanks in advanced for any help.

 

[elbert]

It depends on your cooling a bit but for air cooling 1.35v is the highest I would suggest. There isn't any absolutes in overclocking as the silicon lottery can be good or bad. This said there are a few things to try and get your voltage down a bit. Do know that 4.5Ghz is pretty good if totally stable. Play around with Adaptive Mode, Load Line Calibration, and Offset Mode may help.

 

[Compuser10165]

I also have an i7 6700K. I keep mine at 4.6ghz with 1.33v (for me that is a +90mv offset) which goes to a max of 1.344 under AVX loads with LLC4. I can go to 4.7ghz but the voltage would be close to 1.39 which is not worth it. In terms of tempperatures: around 55C while gaming, max I've seen is 73C (AIDA64/ Cinebench R15) with a bequiet Dark Rock Pro 3 CPU cooler What you need to understand is that every chip is different and will provide different results at different settings.

I suggest you to OC with offset voltage (and use LLC if necessary) and not manual voltage so the CPU can drop the voltage when not necessary; Also don't use Auto Motherboard OC since the voltages seem to get higher than necessary. Depending on your cooling solution and what is your workload (a higher OC may be good for gaming, while a moderate OC is better for overall system stability)- I am not saying that a high OC cannot be stable, depends on CPU.

Regarding the voltage, I would say below 1.4v is fine if your temperatures are fine. Let's say 1.35v for a big air cooler and 1.4v max for good a closed loop AIO or custom watercooling although this is not a rule by any means.

 

[hahapingazzz]

I also have an i7 6700K. I keep mine at 4.6ghz with 1.33v (for me that is a +90mv offset) which goes to a max of 1.344 under AVX loads with LLC4. I can go to 4.7ghz but the voltage would be close to 1.39 which is not worth it. In terms of tempperatures: around 55C while gaming, max I've seen is 73C (AIDA64/ Cinebench R15) with a bequiet Dark Rock Pro 3 CPU cooler What you need to understand is that every chip is different and will provide different results at different settings.

I suggest you to OC with offset voltage (and use LLC if necessary) and not manual voltage so the CPU can drop the voltage when not necessary; Also don't use Auto Motherboard OC since the voltages seem to get higher than necessary. Depending on your cooling solution and what is your workload (a higher OC may be good for gaming, while a moderate OC is better for overall system stability)- I am not saying that a high OC cannot be stable, depends on CPU.

Regarding the voltage, I would say below 1.4v is fine if your temperatures are fine. Let's say 1.35v for a big air cooler and 1.4v max for good a closed loop AIO or custom watercooling although this is not a rule by any means.

I'm using a cryorig h5 on this rig, but will be buying an entirely new rig in the next three months.

as for the voltage you said 1.4 is fine as long as temps are good, I'm not seeing the CPU crack 61C ever and haven't seen a single core go over 65C in a full max heat stress test, which seems perfectly fine to me.

But you also stated no more then 1.3 on air cooling, is there a reason for this or can I still go up to 1.4 as long as temps are fine?

Thank you both for your help though, I'm definitely going to start playing with offsets, LLC, and adaptive.

Oh and also, this computer is only ever used for gaming, literally nothing else other then web browsing, so i wouldn't ever expect to see temps over 50C even up at 1.365

 

[BigBoomBoom]

The reason not to overdo voltage is that voltage also degrade CPU not just the temp. The general consensus is 1.4V/1.425V and under is the safe point, not just because of lack of cooling. For reference while trying to do 4.9Ghz on mine I upped Voltage all the way to 1.46V and under Prime95 it gets to just 79C at 22C room temp, with a Noctua NH-D15S, so the myth about air cooling max 1.35V is absolutely bogus because that's no way hot.

What voltage people get is mostly irrelvant to yours, not all CPU are equal. Mine does 4.7Ghz at just 1.32V and 4.8Ghz at 1.39V but I still can't get stable 4.9Ghz at 1.46V so I stopped trying to get 4.9Ghz which is high for Skylake without delidding.