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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 187

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post #1861 of 9599
Quote:
Originally Posted by VonDutch View Post

my little list says,
0x101 = increase vcore
i wouldnt feel comfy with 1.46V vcore,
how does 4.7ghz look voltage wise?
my voltage jump from 4.7 to 4.8ghz was big..
"hwmonitor reports up to 1.46v",
what do other programs report?

The same thing - with the exception that cpu-z shows one digit of precision more.

I can't find a clear consensus on whether running an ivy bridge in the 1.40v-1.46v range leads to damage or not. I can leave cpuburn or prime running for hours and 73 C is as high as I ever got, so temperature-wise there's still a lot of headroom before throttling kicks in. I am worried about my chip being so voltage-hungry though. RMA takes a while and I'd rather avoid the wait.

Edit: Currently running at 4.7GHz and I managed to get the voltage down to 1.42-1.43 by reducing turbo boost to 0.152v. I'm passing the 1h mark on prime and I think I can go somewhat lower. Vcore is fluctuating by 10mV - is that normal?

Thing is I'd like as much performance as I can get. I built this rig for Planetside2 and that game eats CPUs for breakfast. I put in a 560gtx and 98% of the time the in-game performance monitor shows it's still CPU-bound.
Edited by archont - 10/31/12 at 7:37am
post #1862 of 9599
Quote:
Originally Posted by archont View Post

I can't find a clear consensus on whether running an ivy bridge in the 1.40v-1.46v range leads to damage or not. I can leave cpuburn or prime running for hours and 73 C is as high as I ever got, so temperature-wise there's still a lot of headroom before throttling kicks in. I am worried about my chip being so voltage-hungry though. RMA takes a while and I'd rather avoid the wait.

yea, i can understand that,
we cant say for sure if running 1.45V is bad or not,
or will lead to a quick damage, or fast degradation,
its to early for that, ask me again in 6-8 months ..lol

on the other hand, if intel states 1.52V vcore max,
one might think it would be ok running 1.45V without damage over longer time,
intel says so too, some peeps contacted them with those questions,
they got a "keep it within our specs, and you should be fine" like answer

got mine in May, did some crazy things with it, voltage wise, but didnt notice any damage, or degradation yet..nothing.
"they" say its more resilient then sandy so..i hope they are right ...lol
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post #1863 of 9599
Thread Starter 
Quote:
Originally Posted by VonDutch View Post

yea, i can understand that,
we cant say for sure if running 1.45V is bad or not,
or will lead to a quick damage, or fast degradation,
its to early for that, ask me again in 6-8 months ..lol
on the other hand, if intel states 1.52V vcore max,
one might think it would be ok running 1.45V without damage over longer time,
intel says so too, some peeps contacted them with those questions,
they got a "keep it within our specs, and you should be fine" like answer
got mine in May, did some crazy things with it, voltage wise, but didnt notice any damage, or degradation yet..nothing.
"they" say its more resilient then sandy so..i hope they are right ...lol

I haven't seen a voltage limit released by Intel for Vcore yet. 1.52v was just the upper limit possible because of the bits of the voltage regulator or some junk (ie. 000000 = 0v and FFFFFF = 1.52v) which is what is stated in the spec sheet. There was one post where an Intel guy claimed 1.52v but there was no evidence to back him and we all concluded he, like many others, were just quoting the spec sheet.

I reason I personally recommend 1.5v is because many users, including me, have been using 1.5v for years with no ill effects. Many enthusiasts have also done suicide benchmarks and only started seeing chips die at 1.6v+.

This includes both Sandy Bridge and Ivy Bridge.

I will state that I don't have enough money to back up my recommendation with a warranty (although Intel does).
I completely understand anyone who wants to stay well below 1.5v. thumb.gif

Edited by kennyparker1337 - 10/31/12 at 12:59pm
post #1864 of 9599
Have a problem that I can't find on internet. My multiplier is set to 42 in bios and BLCK set to 100. However sometimes in hwinfo64 one core or even more than one goes over 4200 MHz. For example core 0 highest core clock is reporting 4269.0 MHz. Is this normal? Or is this a bug with hwinfo64?
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post #1865 of 9599
Thread Starter 
Quote:
Originally Posted by writer21 View Post

Have a problem that I can't find on internet. My multiplier is set to 42 in bios and BLCK set to 100. However sometimes in hwinfo64 one core or even more than one goes over 4200 MHz. For example core 0 highest core clock is reporting 4269.0 MHz. Is this normal? Or is this a bug with hwinfo64?

69MHz could def. be a software bug. Remember that these programs have to constantly poll hardware so sometimes things go a little wonky and the numbers are off. I can't say for sure, though. =/
post #1866 of 9599
Quote:
Originally Posted by writer21 View Post

Have a problem that I can't find on internet. My multiplier is set to 42 in bios and BLCK set to 100. However sometimes in hwinfo64 one core or even more than one goes over 4200 MHz. For example core 0 highest core clock is reporting 4269.0 MHz. Is this normal? Or is this a bug with hwinfo64?


Disable spread spectrum.

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post #1867 of 9599
Quote:
Originally Posted by nvidiaftw12 View Post


Disable spread spectrum.

It is disabled.
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post #1868 of 9599
I'm currently still stuck trying to stabilize my overclock at 4.6 GHz. I'm using 1.296-1.305 v under load. My prime95 and other applications keeps crashing but I never receive a BSOD or core error in Prime. I tried lowering my PLL as low as 1.68 and it doesn't do the trick. Is it time to bump my volts?
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post #1869 of 9599
Quote:
Originally Posted by kennyparker1337 View Post

I haven't seen a voltage limit released by Intel for Vcore yet. 1.52v was just the upper limit possible because of the bits of the voltage regulator or some junk (ie. 000000 = 0v and FFFFFF = 1.52v) which is what is stated in the spec sheet. There was one post where an Intel guy claimed 1.52v but there was no evidence to back him and we all concluded he, like many others, were just quoting the spec sheet.
I reason I personally recommend 1.5v is because many users, including me, have been using 1.5v for years with no ill effects. Many enthusiasts have also done suicide benchmarks and only started seeing chips die at 1.6v+.
This includes both Sandy Bridge and Ivy Bridge.
I will state that I don't have enough money to back up my recommendation with a warranty (although Intel does).
I completely understand anyone who wants to stay well below 1.5v. thumb.gif

yes, i contacted intel support about the max voltages few weeks ago,
because its such a hot item for everyone, asking about it etc..
we/he went through their spec sheets to get those numbers,
he showed me where to find it on the sheets,
(dang, just noticed i didnt copy it, srry)

well, in the end, he told me , if i really wanted to go in depth,
i had to contact one of their engineers, gave me link etc,
but i was happy with the answers/help he gave me already,
so i went with the 1.52V vcore max from that day on.. smile.gif

1.5V vcore, is still under that 1.52, but with little fluctuations you might hit it ..
and when i asked intel about that and degradation/damage on the long run,
he said, if you keep voltages within the specs, there should be no problem at all..

o, someone commented me on this graph,
from sin0822 guide, said that was all wrong, and how i got that 1.52V number,
intel doesnt state that etc etc..same story as you tell me now..
thats why i contacted intel support about it, i hate being wrong, or not well informed..

"quote"
Intel Rec. Max is Intel’s absolute maximum rating for the Ivy Bridge lineup, many of the numbers
provided are identical to those of Sandy Bridge, however while vcore should be lower because
of a better processing technology (22nm vs 32nm) it is max 1.52v here because of the SVID max.
"end quote"

you can see that sin0822 even states 1.55V max on air,
o well, i still tell peeps to stay in the 1.3-1.35V vcore range,
max 1.4V, to be on the "safe" side..if they ask about safe vcores
it prolly would live long if you hit it with 1.45 - 1.5V, 24/7
if it doesnt, and it degrades fast or anything, it was a bad chip already to start with..


Hours later.....

found it, its in sheet 1, page 84, 7.10.1, Table 7-4
http://www.intel.com/content/www/us/en/processors/core/3rd-gen-core-desktop-vol-1-datasheet.html

Symbol Parameter Min Typ Max Unit Note
VID VID Range 0.2500 — 1.5200 V 1

im not that technical etc, i see they talk about VID, and VID range, max 1.52V,
not max vcore, or its the same thing, not im not sure anymore either ..lol,
guess thats why the intel support guy said to contact a engineer biggrin.gif
Edited by VonDutch - 11/1/12 at 5:27am
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post #1870 of 9599
Quote:
Originally Posted by kennyparker1337 View Post

69MHz could def. be a software bug. Remember that these programs have to constantly poll hardware so sometimes things go a little wonky and the numbers are off. I can't say for sure, though. =/

That what I was thinking. Now today though each core clock has a max of 4222.8 MHz. Is this okay? I don't want to damage any hardware.

Also sometimes my core #0 clock drops to 0 MHz for like a second then returns to normal. Only thing it's not being reported on Min value column.
Edited by writer21 - 11/1/12 at 10:29am
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