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i7 3770K overclocking 
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Post i7 3770K overclocking
so.... question.

should i disable Turbo Boost?

i plan on having EIST (Enhanced Intel Speed Step) enabled to have the frequency and voltage throttle down when not much load is needed to save power.

my understanding is that EIST and Turbo Boost operate independently from each other, so disabling one won't disable the other.

my goal is to hit 5ghz, or close to it, with the ability to have the processor throttle down in frequency and voltage during idle or light load to save power.

any Sandy or Ivy guru out there?

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Mon Dec 02, 2013 4:05 pm
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Post Re: i7 3770K overclocking
Don't you need Turbo enabled if you want the multiplier to kick up under load and then drop back down when idle?

I know I leave Turbo, EIST, HT and C1E, all enabled on my 3930k and merely jack up the multi.

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Mon Dec 02, 2013 6:09 pm
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Post Re: i7 3770K overclocking
jdrom wrote:
Don't you need Turbo enabled if you want the multiplier to kick up under load and then drop back down when idle?

I know I leave Turbo, EIST, HT and C1E, all enabled on my 3930k and merely jack up the multi.


HA :lol: this is what i was looking for. i have no idea. since i am coming from a q6600 lol. actually my living room rig is a 1st gen i7 860, but that thing is dramatically different in terms of overclocking compare to the sandy, ivy and haswell.

so i guess i'll need to leave turbo enabled then to use the multiplyer.

thanks for the info jD. :clap:

i guess what i was worried about, was that if i left turbo enabled, the turbo will jack up the clock speek for single core utilization to much higher than the base multiplyer. so say i set the multiplyer to x45. i was worried that having turbo on will add another layer of multiplyer on top and make single core tasks shoots up to 5.2ghz or something and making the system unstable.

i just want the system to go up as high as the multiplyer i set it to in the bios whether it's running a 1 core task, or 4 core task.

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Mon Dec 02, 2013 7:08 pm
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Post Re: i7 3770K overclocking
Mine never goes over my set multiplier. In my case, it drops down to 12x at idle and ramps up to 47x under load.

(though I just realized, I still haven't put my overclocks back lol)

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Tue Dec 03, 2013 5:30 pm
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Post Re: i7 3770K overclocking
what's your CPU Vcc offset setting for 4.7ghz. +0.1v?

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Wed Dec 04, 2013 10:27 am
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Post Re: i7 3770K overclocking
+0.12v and running 4.8GHz now just to keep ahead ;)

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Wed Dec 04, 2013 5:59 pm
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Post Re: i7 3770K overclocking
4.7ghz for now. need to finish transfer all my backed up files. but right now at 1.36vcore and prime stable.

i need to spend some more time this weekend to see how much farther i can push it, that's gonna take some time.

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Fri Dec 06, 2013 1:10 am
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Post Re: i7 3770K overclocking
oh, one thing that might help some people is that i found out that you might need to disable C3 and C6 state to make idle state stable. found that from Overclock.net last night after i ran into some idle crash problems.

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Fri Dec 06, 2013 8:34 am
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Post Re: i7 3770K overclocking
4.8ghz.. but HOT DAMN... had to use 1.43Vcore to get there.

i am staying with 4.7ghz for everyday use. 4.8 is just wayy too hot. i think mainly it's one of my four cores is significantly higher than all other three, like 15 degrees difference. damn Ivy Bridge, why couldn't they just solder the damn thing!

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Sat Dec 07, 2013 6:55 pm
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Post Re: i7 3770K overclocking
Nice Howard. :clap:
Your local power provider will be pleased.


Sun Dec 08, 2013 7:08 am
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Post Re: i7 3770K overclocking
that's just the thing.. this whole system consumes same amount of power during load as my old 5 year old system that i replaced during LOAD. talk about efficiency.

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Sun Dec 08, 2013 7:18 am
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Post Re: i7 3770K overclocking
so apparently, Ivy Bridge requires warm up just like every other retiree in the world do.

it's a strange phenominom, but how did i find this out?

i did an extensive test yesterday and found that my chip does

4.2 @1.1v
4.3 @1.15v
4.4 @1.225v
4.5 @1.275v
4.6 @1.325v
4.7 @1.36v
4.8 @1.425v

but then apparently during cold bootup, or cold resume. the chip requires significantly more voltage during the first 5 min otherwise it crashes. for example, at 4.7ghz, it normally only requires 1.36v, i have to bump up the voltage to 1.384~1.392 in order to ensure that it doesn't crash prime. i found this out after having the rig passed prime several times during the day, and yesterday morning i booted it up and started priming right away and it crashed, this got me real nervous and tried to get to the bottom of it.

i don't know if this has to do with the new 3d transistor gate technology, but it sure is a strange phenominom that's hella annoying.

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Sun Dec 08, 2013 7:24 am
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Post Re: i7 3770K overclocking
c3 and c6....isn't one of those core parking? to turn off idle cores? i remember adding a reg key to tweak something like that because i was too lazy to check the bios for it instead

i still haven't overclocked either of my i7's, all those extra settings look technical to me not having overclocked anything since the 939 days

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Sun Dec 08, 2013 1:29 pm
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Post Re: i7 3770K overclocking
you can read up more about it, but C6 has something to do with deep sleep. i should mention that NOT all people have problems with C3 and C6 turned on. so it's possible that you might not have an issue with it. but just to be safe. plus i have the rig plugged into kill-a-watt, the power difference between having it turned on versus off in an overclocked rig is none. at least i can't see a difference on my KAW.

the problem i am having now is it seems my chip is below the percentile of average 3770K. now i am looking at the average voltage need for 3770K speed.

Image

mine seems to be .1v higher.

and the issue i am running into right now, aside from the weird cold bug, it seems sometimes it'll pass prime, but fails at x264 encoding, which i practically do a lot. and sometimes when it has no problems with x264, and then when i fire back up prime, it fails. it's really confusing and i can't figure out why. for example, at 4.7ghz, i pumped up the voltage to 1.38 to stablize and being able to pass prime, but then after 10 mins encoding a blu-ray, ripbot (x264) crashes. so i lowered the clock to 4.6ghz and ripbot (x264) can encode without a problem, but just for kicks, i fired up prime, and what do you know, one of the workers failed. mind you this is from lowering the clock speed from 4.7 to 4.6. and 4.7 passed prime.

this morning i ran IBT at 4.6ghz, same setting where i have no trouble encoding x264, and it ran fine.

i know Ivy Bridge is suppose to be easy when it comes to overclocking, but now i am starting to feel the opposite. my Nahelm i7 860 (1st gen i7) is nowhere near this complicated. i am starting to miss the good old days when you just pump the voltage and if it crashes just pump more voltage.

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Mon Dec 09, 2013 8:58 am
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Post Re: i7 3770K overclocking
That's likely why RoG boards like mine have a billion different settings and voltages you can change to overcome such things...

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Mon Dec 09, 2013 6:07 pm
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Post Re: i7 3770K overclocking
you guys... i found out why i am having such a difficult time.

i reset everything to stock. stock speed, stock voltage and everything. it failed prime within 3 hours.

so it looks like my CPU is faulty. this is sad, i've never had a faulty CPU in my life. Memtest86 passed all tests. and the CPU failed prime during small FFT at stock speed. i called newegg, they're cross shipping another one for me to return this one. :(

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Asrock z77 Extreme6 / 16GB Gskill Sniper DD3 1866
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Crucial M4 SSD 512
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Mon Dec 09, 2013 6:21 pm
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Post Re: i7 3770K overclocking
Just to be sure, you are using the proper version of Prime95 right? Older versions cause chips to fail. I think you want at least v28.1

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Tue Dec 10, 2013 4:43 am
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Post Re: i7 3770K overclocking
latest version is 27.9, that's what i am using.

although CPU defects aren't common in the consumer world, at least this is the first for me. but they're actually quit common in the IT and enterprise world as you might know. out of the roughly 1000 nodes we have in our LA render farm, we often have nodes fail jobs regularly, and those ones that fail regularly would be sent back for replacement and swapped out. since average consumers typically probably won't detect it, since most of the consumer apps aren't stressful enough to determine. but in the enterprise mode where, take our farm, the CPU's are constantly doing renders 24/7. it's quite easy to spot a bad chip.

i hope that's what it is, i guess we'll find out once the replacement arrives. otherwise, shit's going to hit the fan.

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Tue Dec 10, 2013 9:06 am
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Post Re: i7 3770K overclocking
I'm pretty sure there was certain builds of Prime95 that were bad for Ivy Bridge and Haswell CPUs. I can't dig up the article, but Devils00 had sent it to me a while back.

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Tue Dec 10, 2013 3:34 pm
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Post Re: i7 3770K overclocking
it'll be great if you can find it. that way i know which version to avoid.

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Tue Dec 10, 2013 3:36 pm
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