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Haswell Overclocking Guide [With Statistics] - Page 1166

post #11651 of 19580
Quote:
Originally Posted by Svarog View Post

Well i started at 1.175 vcore, adding more doesn't seem to help.
Ill give that a go seeing my uncore is at 35.

If it's at 35, it's at 40. That's why everybody says to manually set 33
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post #11652 of 19580
Quote:
Originally Posted by Cyro999 View Post

If it's at 35, it's at 40. That's why everybody says to manually set 33

Will soon find out if it did the trick smile.gif
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post #11653 of 19580
Thread Starter 

New guide update:

 

4/6/2014

-Charting form now includes me asking whether CPU is Malay or Costa chip.

-Input voltage section has some revisions.

-Edited delidding info.

-Removed the line repeated where I said, set xmp off even if it's 1600.

-Added info on Prime95 stopping while stressing.

-Added 'ram voltage' column to charting form.

-x264 download now includeds AVsynth and batch file in one download

-x264 loop exe updated.

-Override = Manual voltage noted.

-Chart average voltage values now rounds to 3rd decimal place.

-Added info about Gigabyte's ridiculous uncore ramping to x40 when set to stock.

-Added more in-depth info on power states.

-Added a quick note on Asus bios version.

-Ring bus benchmark spoiler title changed to "Ring Bus Doesn't Matter [Evidence]

 

Original information I wrote down:

 

Quote:

800mhz Idle Speed:

On MSI G45 Gaming, this is brought about by two things and both must be done to get this idle clock speed. First in the bios the multiplier mode must be set to ‘variable’ instead of ‘fixed’. Second, in Windows, your power plan settings must be set to ‘balanced’. You must restart for the change in power plan settings to take effect.

What you see upon restart is, when you open up CPUZ or HWinfo, the speed on idle reads x34. (For 4670k as that is its default speed.) You have to wait about 65 seconds for the 800mhz speed to kick in. Again, that’s 65 seconds from boot to desktop. So give it a little while. That x34 will turn to x8.

Testing showed NO DIFFERENCE in idle power draw at 800mhz vs 4300mhz. In other words, setting multiplier mode to variable and windows power option to balanced vs fixed/high performance power setting made no difference in terms of idle power draw.

Testing showed NO DIFFERENCE in benchmark results with 800mhz idle clock vs 4300 mhz idle clock. In other words, no measurable power savings are gained from getting 800mhz idle vs 4300mhz idle clock but no negative effects occur either. Tests are done for C states vs no C state settings and it showed NO DIFFERENCE in benchmark results. This means you may set C states on with impunity. You will not receive a performance penalty.

This once again points to adaptive voltage mode being a useless mode. This is why Gigabyte owners never felt they are missing any power saving features because they weren’t, even though their motherboard never had an adaptive mode option.

Of course, later on I found out the other mobos need adaptive for low idle voltage. The guide version of this info has been corrected for this revelation. 

 

Charting will be done... soon.

My future planned update for the guide is a simplification. I'm trying to make the guide a bit less wordy and easier to understand. Not 100% sure exactly how I will change the sections but I'll figure it out.

Quote:
Originally Posted by error-id10t View Post


Need better instructions, put computer into microwave, now won't boot!!

No idea if this is what you're after, the hash size does not match the defined 512MB, right click to make bigger. 4-Core: (Click to show)
8-Core: (Click to show)
 

BTW, can you try again but with a longer time control this time? Like if we run starting position, 30 minutes or 1 hour for the analysis for the 4 core and another 30 minutes to 1 hour for analysis of the 8 core. And different positions would help too. Do as much as you feel like doing.


Edited by Darkwizzie - 4/6/14 at 6:16am
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post #11654 of 19580
Quote:
Originally Posted by Cyro999 View Post

If it's at 35, it's at 40. That's why everybody says to manually set 33

Is that restricted to certain motherboards or a general thing?

How would you guys estimate chances of getting a 4770k or 4670k which can do 46x core with <=1.3v?

My Costa Rica i5-4670k is pretty underwhelming. 44x core, 40x cache at 1.3vcore, 1.85 vccin and 1.12 vring.

For 45x core it already needs 1.4 vcore and 2.0 vccin.

I would love to have one that can do 46x or more core multiplier. I'm willing to go up to 1.35vcore and 2.0 vccin for 24/7 since cooling isn't the issue.

But 1.4vcore doesn't feel good even if temps are ok frown.gif
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post #11655 of 19580
Quote:
My Costa Rica i5-4670k is pretty underwhelming. 44x core, 40x cache at 1.3vcore, 1.85 vccin and 1.12 vring.

For 45x core it already needs 1.4 vcore and 2.0 vccin.

0.1vcore for 100mhz? wat
Quote:
Is that restricted to certain motherboards or a general thing?

Giga turbo's, not sure about others. I think some others do, and the base value that turbo's is different for 4770k and 4670k so it's best to set 33 while testing/stabilizing and then adjust after


As for chances of getting a 4.6@1.3 chip.. 30%? Not really sure
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post #11656 of 19580
Quote:
Originally Posted by Cyro999 View Post

0.1vcore for 100mhz? wat
It's silly right? But it's true anything below that is not stable at all with 45x core.

Quote:
Originally Posted by Cyro999 View Post


As for chances of getting a 4.6@1.3 chip.. 30%? Not really sure

So low?`frown.gif

I did read somewhere that ASUS engineers said if your chip boots with 46x@1.2v you have a chip which is among the better 50% of chips out there. I don't know if they just meant booting or really stable with those volts.
I guess i'll need to accept my bad chip or get a preselected one everything else would be pointless..
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post #11657 of 19580
Quote:
Originally Posted by Mysterion90 View Post

It's silly right? But it's true anything below that is not stable at all with 45x core.
So low?`frown.gif

I did read somewhere that ASUS engineers said if your chip boots with 46x@1.2v you have a chip which is among the better 50% of chips out there. I don't know if they just meant booting or really stable with those volts.
I guess i'll need to accept my bad chip or get a preselected one everything else would be pointless..

You can probably adjust other voltages etc. 0.1v for 100mhz is silly, 1.3 to 1.4


my 47x stable voltage is similar to my 50x boot voltage, and i don't think half of chips can boot 46@1.2
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post #11658 of 19580
Quote:
Originally Posted by Mysterion90 View Post

It's silly right? But it's true anything below that is not stable at all with 45x core.
So low?`frown.gif

I did read somewhere that ASUS engineers said if your chip boots with 46x@1.2v you have a chip which is among the better 50% of chips out there. I don't know if they just meant booting or really stable with those volts.
I guess i'll need to accept my bad chip or get a preselected one everything else would be pointless..

Just look at the spreadsheet in the OP. What the Asus engineers said is not true.

The median 4770K (as tracked by this thread's spreadsheet) does about 4,500MHz at 1.28v CPU Core Voltage (Vcore is usually a little higher). So your 50th percentile 4770K is 4,5GHz @ 1.28v.

I just looked at the latest chart. Here are the cumulative percentiles. The data suggest that 52.4% of 4770Ks are at 45x or below. 71.3% are at 46x or below. Etc.

42x --- 4.2%
43x --- 10.5%
44x --- 23.8%
45x --- 52.4%
46x --- 71.3%
47x --- 86.0%
48x --- 93.7%
49x --- 96.5%
50x --- 98.6%
>50x -- 99.3%

Here's a histogram of the frequencies based on 142 samples:


Edited by coelacanth - 4/6/14 at 11:10am
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post #11659 of 19580
Quote:
Originally Posted by Cyro999 View Post

You can probably adjust other voltages etc. 0.1v for 100mhz is silly, 1.3 to 1.4

I did try various settings, i played with the vccin, vring, ring ratio, i tried +0.025 sa and +0.030 vtt but nothing helped. I really tried almost all vcore settings between 1.3 and 1.4 but under 1.35 i get an instant reboot in prime95 with 1344k and almost on all other ftt lenghts. At 1.4 it was running 30min stable and then i stopped so i don't even know if it is stable at 1.4v

Quote:
Originally Posted by Cyro999 View Post

my 47x stable voltage is similar to my 50x boot voltage, and i don't think half of chips can boot 46@1.2

This is just what i read, but I also don't half the chips can do that. Mine certainly can't.

But of course in no way they could have tested enough chips to be able to give a general conclusion and if they tested many CPUs from the same batch their results would be flawed anyway.

edit: Thanks for clearing it up, coelacanth
Edited by Mysterion90 - 4/6/14 at 11:00am
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post #11660 of 19580
Might as well post my overclcok, seems like an average chip. Haven't pushed further as this thing gets pretty hot.

Username: Marc79
CPU Model: 4770k
Core Multiplier: x45
CPU VID: 1.270 vid
Vcore: 1.280 vcore
Uncore Multiplier: x39
Uncore Voltage: auto
Cooling Solution: H110
Stability Test: Battlefield 10+, GTA IV 10+, AIDA 6 hours, RealBench2.1
Batch Number: MALAY L310B493
Ram Speed: 1600Mhz 9-9-9-24
Ram Voltage: 1.5v
Input Voltage: 1.8v
LLC Setting: auto
Motherboard: Asus Hero
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