Overclocking 6600k

[Stuff_]

So, I finallllly upgraded my build from a z68 chipset, and i5 2500k sandybridge; overclocking is much different compared to the sandybridge (though, the same as well). I can't overclocked 1-1.5Ghz more, which makes me sad haha.

 

At my few attempts, I overclocked to 4.5Ghz, and tried to keep my voltage as low as possible. Sandybridge allowed me to keep the voltage soooooo low, like, 4.6Ghz at ~1.216/1.228v. 

 

I was wondering, what is a normal attempt with these chips? I have a corsair h80i, and It seems that even at 4.5Ghz, I get around ~65c during a stress test (Intel ETU), which I feel is high, but maybe that's because my artic silver 5 needs that curing time. 

 

I tried using an offset, instead of manual, because I want my CPU to adjust voltage based on the lower loads. 

 

Any help would be appreciated.

[Mr.Meerkat]

Seems normal to be honest...I may only have a 3570k OCed at 4.2, it has a h100i over it with AS5 but stressing it (aida64 and prime95) makes it go to 55-65c depending on whether I have my window open or not...

[Jumper118]

7 minutes ago, Stuff_ said:

So, I finallllly upgraded my build from a z68 chipset, and i5 2500k sandybridge; overclocking is much different compared to the sandybridge (though, the same as well). I can't overclocked 1-1.5Ghz more, which makes me sad haha.

 

At my few attempts, I overclocked to 4.5Ghz, and tried to keep my voltage as low as possible. Sandybridge allowed me to keep the voltage soooooo low, like, 4.6Ghz at ~1.216/1.228v. 

 

I was wondering, what is a normal attempt with these chips? I have a corsair h80i, and It seems that even at 4.5Ghz, I get around ~65c during a stress test (Intel ETU), which I feel is high, but maybe that's because my artic silver 5 needs that curing time. 

 

I tried using an offset, instead of manual, because I want my CPU to adjust voltage based on the lower loads. 

 

Any help would be appreciated.

what voltage are you using on your 6600K. that was a good 2500K you upraded from and it probably had another 200-400mhz left in it

[Stuff_]

4 minutes ago, Jumper118 said:

what voltage are you using on your 6600K. that was a good 2500K you upraded from and it probably had another 200-400mhz left in it

I use an offset of -0.2 at 4.4ghz I believe. I've never used the adaptive mode, I'm not sure how it works.

 

Generally I see, in CPU-Z, the voltage fluctuate (due to LLC I guess) from 1.228-1.312 at the max I've seen. It's fairly stable (ran Intel XTU for 11 hours, and been gaming already for a day and no reboots).

 

[Jumper118]

1 minute ago, Stuff_ said:

I use an offset of -0.2 at 4.4ghz I believe. I've never used the adaptive mode, I'm not sure how it works.

 

Generally I see, in CPU-Z, the voltage fluctuate (due to LLC I guess) from 1.228-1.312 at the max I've seen. It's fairly stable (ran Intel XTU for 11 hours, and been gaming already for a day and no reboots).

 

ok, you should be able to run more voltage than that.

[Stuff_]

1 hour ago, Jumper118 said:

ok, you should be able to run more voltage than that.

But when I add more voltage, I definitely start hitting around 70c. And my room temp is probably ~23 c. 

Also I'm not worried about adding more voltage. It's stable already, why would I pump more power into it?

 

I definitely did not put my H80i on incorrectly, and I definitely applied the proper thermal paste. I just am unsure about what a good overclock is, as from 3.9Ghz to 4.5Ghz only seems mediocre to me, but maybe that's because I'm used to over 1Ghz, like I said.

[Jumper118]

7 hours ago, Stuff_ said:

But when I add more voltage, I definitely start hitting around 70c. And my room temp is probably ~23 c. 

Also I'm not worried about adding more voltage. It's stable already, why would I pump more power into it?

 

I definitely did not put my H80i on incorrectly, and I definitely applied the proper thermal paste. I just am unsure about what a good overclock is, as from 3.9Ghz to 4.5Ghz only seems mediocre to me, but maybe that's because I'm used to over 1Ghz, like I said.

70c is fine, you can go upto 80c and by increasing the voltage you could overclock it further to 4.6ghz or 4.7ghz

[Imakuni]

8 hours ago, Stuff_ said:

I tried using an offset, instead of manual, because I want my CPU to adjust voltage based on the lower loads.

And why would you care for that?

 

Both power consumption and heat are much more related to load rather than voltage; on idle, lowering the voltages / clocks only changes a few W. There's also no problem at running high voltages 24/7. And even then, your CPU should never be idle anyway...... if anything, having offset only adds chance for instability instead of having an actual benefit.

 

 

Still, your OC is fine. If it's really stable (which I couldn't get on mine), you can just leave it as is or:

 

 

[Stuff_]

15 hours ago, Jumper118 said:

70c is fine, you can go upto 80c and by increasing the voltage you could overclock it further to 4.6ghz or 4.7ghz

So is 4.6-4.7 around the top end of a "normal" 6600k? 

 

4.4-4.5ghz is a normal overclock capability, and usually where people keep it at?

[Jumper118]

3 minutes ago, Stuff_ said:

So is 4.6-4.7 around the top end of a "normal" 6600k? 

 

4.4-4.5ghz is a normal overclock capability, and usually where people keep it at?

mine did 4.7ghz on 1.4v and gets to about 72c on the hottest core. i would consider that avaerage.

[Stuff_]

Just now, Jumper118 said:

mine did 4.7ghz on 1.4v and gets to about 72c on the hottest core. i would consider that avaerage.

You use a fixed voltage? Meaning, you have it 1.4v at all times? I'm thinking about ditching the offset, but I'm not sure.

[Imakuni]

12 minutes ago, Stuff_ said:

You use a fixed voltage? Meaning, you have it 1.4v at all times?

Yeah, he probably just games on the thing, while using a 280mm WC at 10ºC ambient. That's how you can achieve 1.4v, by not stressing the CPU at all, otherwise it would melt instantly.

 

14 minutes ago, Stuff_ said:

I'm thinking about ditching the offset, but I'm not sure.

Did you even bother to read my previous post?

 

Just switch to manual already....

[Jumper118]

21 minutes ago, Stuff_ said:

You use a fixed voltage? Meaning, you have it 1.4v at all times? I'm thinking about ditching the offset, but I'm not sure.

Yes that's on fixed voltage.  I run all my cpus on fixed voltage.  That's on a phanteks dual tower air cooler

[Jumper118]

7 minutes ago, Imakuni said:

Yeah, he probably just games on the thing, while using a 280mm WC at 10ºC ambient. That's how you can achieve 1.4v, by not stressing the CPU at all, otherwise it would melt instantly.

 

Someone clearly hasn't done any research 

[Imakuni]

Just now, Jumper118 said:

Someone clearly hasn't done any research 

I don't really need to research much on that topic when I can literally test that on my own 6600k. At 1.296v, it alreay peaks at mid 80s with a 120mm WC during proper stressing.

 

Still, if you think I'm wrong, please go ahead and make a video about your CPU running Prime95 Small FTT at 1.4v during the hottest day of the year for a few hours. With the GPU running Furmark as well, as it too is a source of heat (unless your rad is intake, then it doens't matter).

[Stuff_]

15 minutes ago, Imakuni said:

Yeah, he probably just games on the thing, while using a 280mm WC at 10ºC ambient. That's how you can achieve 1.4v, by not stressing the CPU at all, otherwise it would melt instantly.

 

Did you even bother to read my previous post?

 

Just switch to manual already....

The precise reason is because for 5 years straight, offset worked wonders for me to achieve an extremely low voltage at an unbelievable overclock with my 2500k. 

So, forgive me if I'm reluctant to immediately change the way I previously overclocked. 

What voltage do you generally run at/around after an extensive stress test? I know chips are different, but at least maybe it'll give me an idea

 

I've just already noticed some really high temps with my corsair h80i, and I feel like I haven't even supplied that high of voltage. 

[Darkseth]

- Use the right LLC. Not too low, not too high. It need to be at a level, where the Load Voltage in Windows is similar to that, what you put into the Bios (DO NOT USE ANY OC SOFTWARE; OR AUTOMATIC OC)

 

- Manuel voltage, to find out, what Voltage you need for what Clock speed. switch to Adaptive Mode later on (or just use Adaptive from the start)

NEVER EVER let Voltage on Auto.

 

- Depending what Clock you want to reach. 1.4V is the absolute MAX 24/7 that i would use, if you have a strong cooler.

I would try, 1.3 Volt, and 4.5 Ghz. If its stable, you can either go up to 4.6 ghz, or put the Voltage Down.

My i7 6700k needs 1.22~ for 4.4 Ghz, 1.29 for 4.5 ghz, and 1.18V for 4.2 Ghz (and i think, 1.14-1.15 for 4.0).

Didnt tried higher, because Temperatures reach 66-70 during a longer stress test with RealBench (i dont like usnig Prime), with an Macho HR02 Rev B.

 

 

- Theres a sweetspot. Like, for additional 100 Mhz, you need xx mV more. At some point, you will need a bigger mV Step for the next 100 Mhz, thats where the sweet spot ends.

 

For example, this graph: 

 

 

The highest i personally would use with this Chip in that Graph, is either 4.4, or 4.5 Ghz. Above that, the additional performance is just way too minimal, compared to the MUCH higher Voltage (exponential higher heat output, and power consumption, for pretty much no performance gain. Noone will ever notice 100 or 200 Mhz)

[Imakuni]

Just now, Stuff_ said:

What voltage do you generally run at/around after an extensive stress test? I know chips are different, but at least maybe it'll give me an idea

 

I've just already noticed some really high temps with my corsair h80i, and I feel like I haven't even supplied that high of voltage. 

It depends on things like ambient temps, cooling and load. For me, 1.296v (after LLC quicked in) was the max I could go, hitting mid~low 80s on bad days. Which is shame really, as it only me into 4.3ghz. I tried 4.333 using bclk, but it would error every once in a while, so I just gave up and stuck to 4.3....

[Jumper118]

17 minutes ago, Imakuni said:

I don't really need to research much on that topic when I can literally test that on my own 6600k. At 1.296v, it alreay peaks at mid 80s with a 120mm WC during proper stressing.

 

Still, if you think I'm wrong, please go ahead and make a video about your CPU running Prime95 Small FTT at 1.4v during the hottest day of the year for a few hours. With the GPU running Furmark as well, as it too is a source of heat (unless your rad is intake, then it doens't matter).

I didn't mean about the chip lol.  I meant me. 

[Stuff_]

I'm trying to nail my LLC down.

 

Also seeing if I can get adaptive voltage to work.

 

I have a few more questions. One, what is a good program to monitor voltages as accurately as possible? CPU-Z seems to provide me a different voltage result compared to Intel Extreme Tuning Utility. I feel like Intel's software SHOULD be most accurate, but is it?

 

[Imakuni]

22 minutes ago, Stuff_ said:

I'm trying to nail my LLC down.

 

Also seeing if I can get adaptive voltage to work.

 

I have a few more questions. One, what is a good program to monitor voltages as accurately as possible? CPU-Z seems to provide me a different voltage result compared to Intel Extreme Tuning Utility. I feel like Intel's software SHOULD be most accurate, but is it?

 

1. HWMonitor.
2. ?

Also, look at the voltages on the mobo, as the CPU field is incorrect (thx voltage regulator outside of the CPU).

[Stuff_]

Ah thanks. 

I'm sitting at a weird spot at 4.5Ghz. Failed using a prime95 test (rounding error) but any other tests work, and thus far no reboot. So I guess just a tiny bit more voltage might do it.

 

[Imakuni]

20 minutes ago, Stuff_ said:

Ah thanks. 

I'm sitting at a weird spot at 4.5Ghz. Failed using a prime95 test (rounding error) but any other tests work, and thus far no reboot. So I guess just a tiny bit more voltage might do it.

Same for me. 4.5 / 4.4 errors. Even 4.333 errors, though only after a long while.....

[Stuff_]

1 hour ago, Imakuni said:

Same for me. 4.5 / 4.4 errors. Even 4.333 errors, though only after a long while.....

I hope it's just a voltage issue, and not the chip itself hardly being able to oc well. Cause if I can only get a 400mhz OC I would have just gotten an non k chip.

 

Also just bought a h100i v2 at best buy. So let's see if that helps temps at all. 

[Imakuni]

Just now, Stuff_ said:

I hope it's just a voltage issue, and not the chip itself hardly being able to oc well. Cause if I can only get a 400mhz OC I would have just gotten an non k chip.

 

Also just bought a h100i v2 at best buy. So let's see if that helps temps at all. 

More than voltage (1.3 is still a bit low), it was a heat problem. I could most likely push voltages up if it wasn't hitting such high temps.