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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 49

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post #481 of 9531
Quote:
Originally Posted by steven88 View Post

kennyparker, just out of curiosity
In your OP, it says not to exceed 1.52 vcore & 85C in prime 95 blend...I'm just wondering, is this personal preference? Or actually Intel manufacture specs?
Thanks in advanced

quoted from intel website

In this case since the maximum Vcore for this processor is 1.52, it will be running under specifications, so there should be no issues at all.

http://communities.intel.com/message/150226


The TJMax for Sandybridge is 98C. Intel's specified in their data sheets that the maximum recommded voltage for the CPU is 1.52v. Sandybridge is all about the multiplier and thats pretty much it aside from VCore. So.. adjust the multiplier until its unstable then add voltage

OLDER POST FROM 2011 but should still apply
Quote:
Originally Posted by munaim1 View Post

That I'd get this in here aswell, this is my take on voltages and temperatures on sandybridge, take it as you will:

No one is absolutely certain of what the safe vcore is for the new sandybridge chips. What I can tell you is that many say the max safe vcore for these chips are 1.3 region, however, intel states that the max 'VID' is 1.52 and many say that around 1.4 if your on air and 1.45 should be the max if your running water cooling.
Personally I will not go above 1.5v for 24/7 with these chip but that is totally upto you. The main thing to understand is that 'YOU' have to come up with the conclusion of what the max is. That way no one is blamed if the chip degrades (none reported so far, even with so called 'high 1.4+ vcore')

Regarding temps, CPU throttles at 95c, some say keeping it below 85c is good, some say keeping it below 80 is better, other's say below 75c is really good and there are quite a few that say 70c should be the max. Which ever one your comfortable with and if you have substantial cooling, YOU DECIDE YOUR MAX, just remember it throttles at 95c.
I personally am keeping mine below 70c biggrin.gif

Hope that helps thumb.gif

Edited by nycste - 5/1/12 at 10:25pm
post #482 of 9531
thank you nycste...you have been helpful!
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post #483 of 9531
Thread Starter 
Wooooooah. eek.gif

http://communities.intel.com/message/150226

Does this mean the Vcore Max is OFFICIALLY 1.52v?!

There was like 1,000 threads on what the max was, and no one had any official evidence.... so wow... might have to change the guide a bit...
post #484 of 9531
Quote:
Originally Posted by Lucky 23 View Post

Heres my settings that allow the cpu to downclock. You need to have Speedstep and C1e Enabled along w/ using offset voltage. I'm not 100% sure on where all your voltages should be for 4.8ghz since i havent taken mine up that high but ill do my best to help you out.

Thank you.. i will try it today and post back
Quote:
Originally Posted by nycste View Post

quoted from intel website
In this case since the maximum Vcore for this processor is 1.52, it will be running under specifications, so there should be no issues at all.
http://communities.intel.com/message/150226
The TJMax for Sandybridge is 98C. Intel's specified in their data sheets that the maximum recommded voltage for the CPU is 1.52v. Sandybridge is all about the multiplier and thats pretty much it aside from VCore. So.. adjust the multiplier until its unstable then add voltage
OLDER POST FROM 2011 but should still apply

This is indeed crazy :O
post #485 of 9531
Quote:
Originally Posted by kennyparker1337 View Post

Wooooooah. eek.gif
http://communities.intel.com/message/150226
Does this mean the Vcore Max is OFFICIALLY 1.52v?!
There was like 1,000 threads on what the max was, and no one had any official evidence.... so wow... might have to change the guide a bit...

That link does provide some light on the question...but its still pretty vague IMO...I mean, how do we know its not some guy at Intel BSing behind the desk? I'm not fully dis crediting the link, or starting a war or anything like...just saying

btw, I have a 2500k and use to run it 1.470 vcore at 4.8ghz...it was prime blend stable and pretty much rock solid....my HAF X & NH-D14 keeping it nice and cool....every time I mention my vcore, alot of people would get heart attacks saying thats way too high of a vcore...I was asking myself "is this just a personal preference or do they have actual evidence?"

Anyway...how does one measure CPU degradation? I always hear this getting thrown around...but what are the signs of degradation? Does one need to push uber high Vcore like 1.60, 24/7 for 3 years straight, only to find a very small performance loss? What is the scale we are talking about here?
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post #486 of 9531
4.8ghz @1.47V thats so high for such a low OC lol stop it! well at least i hope you did

my link may not be 1000percent correct but its something i found and wanted to share and being that it did come from some kinda INTEL page and was confirmed by someone i know on OCN i figured its about time to post it in here

either way stay below 1.5v and well see how long it takes ot blow your cpu up compared to others smile.gif
post #487 of 9531
Quote:
Originally Posted by steven88 View Post

That link does provide some light on the question...but its still pretty vague IMO...I mean, how do we know its not some guy at Intel BSing behind the desk? I'm not fully dis crediting the link, or starting a war or anything like...just saying

Good question. So it will be important to follow that thread, if it lasts, or that forum, to see if he backtracks, if his superiors have told him "You idiot, you can't say that". Otherwise, since it is an an official Intel site, and since two posts down from the 1.52 statement he says clearly that Intel does not recommend overclocking (but does not take back his statement about 1.52), it's probably an accurate statement per their engineers. That would be my assessment for what it's worth.

martyh
post #488 of 9531
Thread Starter 
Quote:
Originally Posted by tootercomputer View Post

Quote:
Originally Posted by steven88 View Post

That link does provide some light on the question...but its still pretty vague IMO...I mean, how do we know its not some guy at Intel BSing behind the desk? I'm not fully dis crediting the link, or starting a war or anything like...just saying

Good question. So it will be important to follow that thread, if it lasts, or that forum, to see if he backtracks, if his superiors have told him "You idiot, you can't say that". Otherwise, since it is an an official Intel site, and since two posts down from the 1.52 statement he says clearly that Intel does not recommend overclocking (but does not take back his statement about 1.52), it's probably an accurate statement per their engineers. That would be my assessment for what it's worth.

martyh

*cough* The last post in that thread was from July, 2011 (minus the thread necro).



He isn't wrong though. In the Intel specification sheet (p. 75), it states that Vcc Max is 1.52v. I guess some other people on here had major disputes with that being max safe voltage.

I honestly think it was just due to the die shrink from 45nm to 32nm. Everyone thought that it was impossible for Sandy Bridge to have the same voltage requirment as the 45nm chip line, but like I said, Intel works hard at what they do; perhaps they found a new "System" to make 32nm work the same as 45nm (voltage wise).

So far no one has provided any evidence to date that 1.5v is bad. Some people, like myself have been running at 1.5v from the day Sandy Bridge came out. I have not seen a single degradation. Degradation would include things like: (1) OC failing and requiring more voltage over time. (2) Temperatures rising over time. (3) Performance in benchmarks decreasing over time.

There was a guy who ran his chip at 1.7v (just for giggles) and it died in about a day. But don't get scared, because 1.7v is an ENORMOUS jump from 1.5v ESPECIALLY if the limit truly is 1.52v.
Edited by kennyparker1337 - 5/2/12 at 11:12am
post #489 of 9531
Quote:
Originally Posted by Lucky 23 View Post

Whats your vcore during load in CPU-z at 4.3? Are your settings similar to the first page?

375
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post #490 of 9531
Quote:
Originally Posted by kennyparker1337 View Post

*cough* The last post in that thread was from July, 2011 (minus the thread necro).

Ha. Good catch kenny. Yeah, umm, I therefore would not hold my breath for the NEXT post!!
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