Overclocking 3770K at stock voltage

[cadaveca]

yeah, seems heat is real issue for your chip. 1.2 V @ 4.6 GHz under H100 gets me 70C loaded, so for sure these chips "run hot". Your cooler should be more than adequate, and 80c is nothing, really. 105C max for these chips.

you know, if your CPU throttles under stock cooler, and stock speeds, and it sounds like it might, you can RMA for that.

 

[Octopuss]

H100 is a bit more powerful though, isn't it. I also don't go wild with the fan on the cooler either, about 1k rpm as I hate loud stuff coming from under the table.
I will know more when I find stable voltage though.
Until then thanks a LOT for all the input

 

[Xzibit]

Since reading this thread I became curious...

So I OC my 3770K
C-States = Disable
Turbo = Disable
HT = Enabled
*Everything else is on AUTO

x44 @ v1.2 running Prime95 temp tops off at 73c

x45 running Prime95 crashes but windows doesnt. I'll have to do some more reading see if i have to swith to manual settings.

 

[cadaveca]

H100 is a bit more powerful though, isn't it. I also don't go wild with the fan on the cooler either, about 1k rpm as I hate loud stuff coming from under the table.
I will know more when I find stable voltage though.
Until then thanks a LOT for all the input

No problem. I'm here to answer questions the best I can, and I'm learning here as well! All of our experiences = more usable info.

Xzibit, re-enable C-STATES and Turbo, try following the steps here.

 

[Xzibit]

Its a no go for Turbo On and AUTO/Default settings

It just ask for too much juice v1.448 and Temps go into +90c with (-) Offset.

My chip is good at v1.06 stock. havent tried the v0.9 undervolt tho

Pretty sure it wants more juice at x45 than the v1.2. maybe v1.25 unless i overlooked something in the UEFI

 

[cadaveca]

Its a no go for Turbo On and AUTO/Default settings

It just ask for too much juice v1.448 and Temps go into +90c with (-) Offset.

My chip is good at v1.06 stock. havent tried the v0.9 undervolt tho

Pretty sure it wants more juice at x45 than the v1.2. maybe v1.25 unless i overlooked something in the UEFI

That's why you need to start at stock, find stock voltage, and then adjust the offset. Then check next multi up, make sure it isn't asking for more, adjust, change multi, adjust...

 

[Xzibit]

Okay,

Unless i'm overlooking something my UEFI doesnt allow me to set a base voltage and then the offset -/+. The only way to get the offset is to set base voltage on AUTO. Manual unlocks the Offset but no base voltage option.

I did do some more test and this is what I got so far.

I ran Prime95 for 30min to do a quick stability check

x35 @ v0.910 (53c max temp)
x40 @ v1.030 (60c max temp)
x45 @ v1.230 (79c max temp)
^This is with C-States and Turbo Disabled
*Since activating them the base voltage is v1.2xx and temps are much higher at 73c max

Out of curiosity I did check what the highest clock with the lowest voltage i can get.
x28 @ v0.800

 

[cadaveca]

my UEFI doesnt allow me to set a base voltage and then the offset -/ .

None do. This is individual to each CPU, and can be found by the steps I mentioned, enabling all default CPU features including C-States and Turbo, and loading the CPU on all cores with evrything set to "stock"(with P95, for example).

The voltage supplied to your CPU under those conditions is your "base" voltage. It only occurs when Turbo is enabled. It is set by Intel at the factory when they bin the CPU.

C-States will have the CPU drop to a lower voltage and frequency on idle, or low-load scenarios, and this is the major factor for power-saving, lower heat, and a longer-lasting lifespan for the CPU. Turbo enables almost instantly, so no performance is lost, either, and then you are not pushing as much current on idle to maintain the higher clock.

 

[Octopuss]

wow my cpu is shitty. Still x40 only, and had to go easier on the offset because Prime95 kept disappearing again (that's right, the window simply disappears instead of an error; I never experienced on my older system). So currently I am testing -0.140V. CPU-Z claims vcore to be 1.068V. I don't think I can hit any good speeds with reasonable volts with this :/

 

[Crap Daddy]

Can you try leaving voltage on auto, turbo, C-states enabled and change only the turbo ratio on all cores to 40? This should automatically provide enough voltage for your CPU to sustain the aforementioned frequency when under load. Run prime and check voltage. Regardless of the fact that it will pump more voltage than needed the system has to be fully stable since what you're saying is that whatever you do you cannot run prime at higher turbo freq than stock.

 

[Octopuss]

I tried that already, temperatures were going up to 98°C or so. No way I am trying auto again.I don't want to fry the thing.
Absolute maximum I will tolerate is 85° on any core.

How the hell do people manage 4.5GHz at 1.2V without going over 100°?

 

[Crap Daddy]

Then there is definitely wrong either with your cooler or with the motherboard supplying too much voltage. When you did this on auto, but remember only turbo multi upped, what was the voltage as shown in CPU-z?

 

[cadaveca]

40 is only one multi above the stock turbo multi of 39. Your CPU should not get that hot. Quite a few boards will run all cores at x39 anyway, even though x39 is ingle-core only on stock turbo settings...

Have you tried flashing to the most recent BIOS?

Also, if you check my G1.Sniper review, you'll see what I had to change to get 4.6 GHz, with a Noctua NH-C14. It was not alot:

http://www.techpowerup.com/reviews/Gigabyte/G1_Sniper_M3_review/6.html

 

[Xzibit]

Soarted it out...

C-States and Turbo Enabled

x35 w/ 4core Turbo @ x45
(+)0.070 Offset = v1.232

On a side note...
Is there a known "more" accurate temp software reading for Ivy-Bridge? I noticed there is a discrepency of up-to 20c between differant softwares.

 

[cadaveca]

Soarted it out...

C-States and Turbo Enabled

x35 w/ 4core Turbo @ x45
(+)0.070 Offset = v1.232

On a side note...
Is there a known "more" accurate temp software reading for Ivy-Bridge? I noticed there is a discrepency of up-to 20c between differant softwares.

Try AIDA64. seem reliable to me, did check TjMax with it looking for throttle, confirmed 105 C. I've noticed the same thing, but i think it might just be different polling intervals. Plus, having more than one temp app open screws with the reported numbers as well.

 

[Octopuss]

40 is only one multi above the stock turbo multi of 39. Your CPU should not get that hot. Quite a few boards will run all cores at x39 anyway, even though x39 is ingle-core only on stock turbo settings...
Have you tried flashing to the most recent BIOS?

I got the latest beta bios F12j.
With DVID -0.130V (the last I was testing) and Prime95 running Small FFTs, CPU-Z reported 1.068V vcore. Temps were on average 80-85-85-78. Bleh!

Then there is definitely wrong either with your cooler or with the motherboard supplying too much voltage. When you did this on auto, but remember only turbo multi upped, what was the voltage as shown in CPU-z?

With everything on auto and Turbo set to x40 on all cores, CPU-Z says 1.200V. That's quite horrible!
(I also had to adjust those last Turbo values from 77/112 to 100/150 /I just shot first random higher value I though of/)

 

[cadaveca]

Temps were on average 80-85-85-78. Bleh!

just remember that the max for these chips is 105C, so that's actually not that bad..same as 75 C on SB chips. I have also seen many running 95 C-100 C loaded when OC'd. These higher temps are why i think they chose to not use solder..it might melt right off the chip!

Personally, i won't run a beta BIOS as an end user. Try the latest non-beta release...many betas are tuned for extreme LN2 guys.

 

[Octopuss]

Well, I've always used beta bios since years ago, I find them over at tweaktown forums, think a GA employee posts them there, or someone close to them. Those bioses usually turn into stable official versions over time anyway.

 

[Octopuss]

I just checked the link you posted and it seems the conclusion is that
1) my cpu is shit
2) for IB overclocking, I chose the wrong cooler. I could get the Thermalright HR-02 Macho, but its base is not so perfectly flat as Coolermaster's (which in turn is much less massive)

ad 2: I could ramp up the rpm on the Noctua all the way to max (I installed one of those pwm regulators), but I don't want noisy case, not more than needed anyway. With 1400 rpm I am sure I'd get the temps down a fair bit compared to current 1000, but it's out of question.

Guess I will settle down with finding stable 4GHz offset and be happy with it. In the end I do not need more speed, but I still like to tweak stuff for the hell of it.

 

[Octopuss]

Maybe I should get more massive cooler. What would you guys recommend? Not one of those dual fan ones though! I really like the HR-02 Macho, but I am not skilled enough to lap the base, so something similar I guess.

 

[Octopuss]

The mission continues: already at only -0.80V DVID and STILL not friggin' stable. Had to take side of my case off cause temps were going over 95°. And that's with fan on the cooler alrady pushed to 1300 rpm. Wtf is this....

 

[Crap Daddy]

Something is wrong. I understand that you don't want auto and you don't like the high temps but
keeping the voltage on auto and raising just the multi in the turbo setting to 40, the system should be stable regardless of the heat. Furthermore, if enabled, thermal protection if it kicks in should reduce the freq and not crash the machine. As far as I understood beside the high temp the machine is still unstable? And, since your voltage is under 1.1 the only explanation for 95C is that the cooler is not properly seated

 

[Octopuss]

The cooler is perfectly seated because the heatsink gets quite hot after a very short while.
Auto is out of question because I can not cool it then. I have no idea how others do it with 1.2+ vcore but I just can't.

The machine seems stable for regular work but Prime95 crashes in under 3 hours.
DVID is already at like -0.70 and reported vcore is 1.152V. I just need different cooler. This won't do in my case.

 

[Octopuss]

Was googling around for a possible cooler replacement and came up with this list:

CoolerMaster Hyper 612S - I really like that one, the base looks flat and pure copper
Scythe SCMG-3100 Mugen 3 Rev.B - a huge fucker, but unsure about performance given how the heatsink is designed
Scythe SCNJ-3100 Ninja 3 Rev. B - just a humongous fucker
Thermalright HR-02 Macho - nice massive heatsing, nice looks, shitty base

anyone has any experience with either of them?

 

[Xzibit]

Here is a guide done with a Gigabyte MB UEFI

One thing I been finding out is you dont need to run the extra head room on current phases. Just makes your MB hotter (2-6c).

Been tweaking mine and I'm able to have all the power saving features on now stable.

x45 all 4 cores @ v1.224 (79c)

Slightly better then before where it was at v1.232

If i want to go x45+ I have to drop the power saving features of the motherboard.