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Ivy Bridge Overclocking Guide ► Asus Motherboards - Page 187

post #1861 of 7032
Hey guys

I just overclock my 3770k for the first time @ 4.5 ghz wanted to know if im doing anything wrong.
I followed the guide step by step and after a 30 min of blend test. I get these temps.



i did not change anything from the guide soo I did not set the of Vcore and offset.

Getting VID of 1.2810V in Coretemp and 1.288V in CPU-Z

Should I change something or just stress test for 8 to 12 hours now with prime95 to see if everything will be stable?
post #1862 of 7032
Quote:
Originally Posted by slayer191 View Post

Hey guys

I just overclock my 3770k for the first time @ 4.5 ghz wanted to know if im doing anything wrong.
I followed the guide step by step and after a 30 min of blend test. I get these temps.



i did not change anything from the guide soo I did not set the of Vcore and offset.

Getting VID of 1.2810V in Coretemp and 1.288V in CPU-Z

Should I change something or just stress test for 8 to 12 hours now with prime95 to see if everything will be stable?

Try using the latest P95 -HERE-. Everything else looks fine.
post #1863 of 7032
I just tried this tutorial and when everything is set correctly my cpu is back to 2.4GHz in idle. I thought when I set the BIOS to manual at 4.5GHz that's what it should stay at all the time, yes??

Forgive this question, it's really stupid, but I don't see where to enter Vcore value? I set multiplier to 45 but the tutorial does not show where Vcore is.

"CPU Manual Voltage" was set to "Auto" in the tutorial, not a value of Vcore. Is this the place? Initially I did set this point to 1.25. I just did it again but it was red. Why? Am I trying to change the frequency instantly in the BIOS and it says it can't?
Edited by tyee - 1/10/13 at 10:10pm
post #1864 of 7032
Quote:
Originally Posted by tyee View Post

I just tried this tutorial and when everything is set correctly my cpu is back to 2.4GHz in idle. I thought when I set the BIOS to manual at 4.5GHz that's what it should stay at all the time, yes??

Forgive this question, it's really stupid, but I don't see where to enter Vcore value? I set multiplier to 45 but the tutorial does not show where Vcore is.

"CPU Manual Voltage" was set to "Auto" in the tutorial, not a value of Vcore. Is this the place?
Yes, CPU manual voltage is where you type in your number for vCore. Your 4500 will drop down at idle per speedstep, which is a good thing. If you are starting this for the first time 4.5 might be a bit high.

Edit: you type in 45 in the CPU Power Management section, the four instances of it on the tweaker page will change when you do.
Edited by justanoldman - 1/10/13 at 10:21pm
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post #1865 of 7032
Quote:
Originally Posted by justanoldman View Post

Question for anyone who can shed some light:
What causes more degradation to your CPU, voltage or heat? Obviously the two are related, but with the concept of delidding being introduced, it brings up the question.

When overclocking your chip you will eventually find the vCore that make your max core temp go higher than the comfort zone, but if you delid then you can all of the sudden send significantly more voltage to the CPU in order to reach a higher overclock because your temps are now measurably lower.

Even though your temps are much lower, your voltage is higher. So you could have one chip not delidded with a 1.3 vCore and 95c temps under stress, and you could have another chip with 1.4 vCore with 85c max temps. Obviously I am just guesstimating those numbers, but hopefully my point is clear.

Which of the two scenarios degrades the chip more, the one with lower temps but higher voltage, or the one with lower voltage but higher temps? I am not saying either won't be fine, just wondering which does more damage in the long run.

Let's assume you have an endless supply of LN2, temps aren't an issue, voltage is still your enemy and the recommend 1.3 - 1.45V is still in effect while the absolute maximum is 1.52V. I'm not sure if Intel's recommended and maximum voltages have anything to do with temps, it may have more to do with how resilient the Ivy Bridge process is. Sandy Bridge is less resilient than Ivy Bridge because of the process, not temps.
Edited by Systemlord - 1/10/13 at 10:29pm
post #1866 of 7032
Hello,

First I just want to say I'm a total noob in overclocking.
My config is:
-i7 3770m
-Asus P8Z77-V
-2x4Go G.SkillRipJaws X DDR3 2133MHz PC3-17000 CL9(9-11-10-28-2N)


I configured my BIOS like in the OP except for the DRAM Voltage which I put to 1.6 or the system won't boot.
I used the same method to overclock and I got a 47 multiplier with a Vcore 1.35 stable for 12h on prim95 so I'm quite happy.

But I have a question, I put my memory frequency to 2133 Mhz but CPU-Z tells me it's 1066 MHz, so what's wrong ?

Another question: I don't understand what is the difference between using the offset voltage and manual. Is it usefull ?


Thanks !
Edited by Cpowa - 1/11/13 at 12:10am
post #1867 of 7032
justanoldman
Thanks, it seems to be working now. I'm at 4.5GHz with Vcore at 1.264 according to CPUz. I actually input 1.25V in the bios. Whoops, my x264 stress encoding test just failed as I was typing this. I guess I have to go a little higher then. When I finally get a stable Vcore should I use what CPUz tells me or what I put in the bios for calculating the offset??
Edited by tyee - 1/10/13 at 11:34pm
post #1868 of 7032
Quote:
Originally Posted by Cpowa View Post

But I have a question, I put my memory frequency to 2133 Mhz but CPU-Z tells me it's 1066 MHz, so what's wrong ?

CPU-Z halves the memory frequency so if you multiply 1066 by two you should get 2132 which is fine because that last MHz will fluctuate over time
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post #1869 of 7032
Quote:
Originally Posted by justanoldman View Post

Question for anyone who can shed some light:
What causes more degradation to your CPU, voltage or heat? Obviously the two are related, but with the concept of delidding being introduced, it brings up the question.

When overclocking your chip you will eventually find the vCore that make your max core temp go higher than the comfort zone, but if you delid then you can all of the sudden send significantly more voltage to the CPU in order to reach a higher overclock because your temps are now measurably lower.

Even though your temps are much lower, your voltage is higher. So you could have one chip not delidded with a 1.3 vCore and 95c temps under stress, and you could have another chip with 1.4 vCore with 85c max temps. Obviously I am just guesstimating those numbers, but hopefully my point is clear.

Which of the two scenarios degrades the chip more, the one with lower temps but higher voltage, or the one with lower voltage but higher temps? I am not saying either won't be fine, just wondering which does more damage in the long run.

i thought for long time vcore would degrade a cpu more then heat,
doing some research i came across this article a few weeks ago,
http://www.anandtech.com/show/2468/6

The Truth About Processor "Degradation"

As soon as you concede that overclocking by definition reduces the useful lifetime of any CPU, it becomes easier to justify its more extreme application. It also goes a long way to understanding why Intel has a strict "no overclocking" policy when it comes to retaining the product warranty. Too many people believe overclocking is "safe" as long as they don't increase their processor core voltage - not true. Frequency increases drive higher load temperatures, which reduces useful life. Conversely, better cooling may be a sound investment for those that are looking for longer, unfailing operation as this should provide more positive margin for an extended period of time.

The graph above shows three curves. The middle line models the minimum required voltage needed for a processor to continuously run at 100% load for the period shown along the x-axis. During this time, the processor is subjected to its specified maximum core voltage and is never overclocked. Additionally, all of the worst-case considerations come together and our E8500 operates at its absolute maximum sustained Tcase temperature of 72.4ºC. Three years later, we would expect the CPU to have "degraded" to the point where slightly more core voltage is needed for stable operation - as shown above, a little less than 1.15V, up from 1.125V.


im not very technical, but i think this says that high temps will degrade a chip more then vcore does over time,
glad i delidded and have good temps now ..lol

wink.gif
Edited by VonDutch - 1/11/13 at 12:18am
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post #1870 of 7032
Quote:
Originally Posted by Solstice11 View Post

CPU-Z halves the memory frequency so if you multiply 1066 by two you should get 2132 which is fine because that last MHz will fluctuate over time

Thanks smile.gif

Now I just need to understand what is the offset voltage, and if I should use it.
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