OCCT: error occured after 4 only seconds

[Derico]

So i was trying to analyze the stability of an overclock using occt. Prior to launching the test, i checked the boxes in the preferences where it says "stop the test when all cpu core temps reach 75 Celsius".

The test stopped after 4 seconds with the message that an error occured. Going over the result graphs, i realized that after 4 seconds, core 0 temperature had allegedyly jumped to 95 degrees which i find hard to believe. I had hwmonitor open the entire time and it said all the cores werent near that temperature. Is it possible that occt is not so accurate there?

Background info: i7-4930k @ 4,8 ghz, corsair h100i, Vcore 1,344 (1,360 under load)

 

[CompuTronix]

Derico,

Vcore is far above the maximum recommended level, which is 1.300. You're pushing your overclock too high and you're sacrificing the longevity of your processor.

From the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

" ... Section 8 - Overclocking and Vcore

Overclocked processors can reach up to 150% of their Thermal Design Power (TDP) when using manual Core voltage (Vcore) settings, so high-end air or liquid cooling is critical. Every processor is unique in it's overclocking potential, voltage tolerance and thermal behavior.

Regardless, excessive Vcore and temperatures will result in accelerated "Electromigration" - https://www.google.com/?gws_rd=ssl#q=Electromigration - which prematurely erodes the traces and junctions within the processor's layers and nano-circuits. This will eventually result in blue-screen crashes, which will become increasingly frequent over time.

CPU's become more susceptible to Electromigration with each Die-shrink, so 22 Nanometer architecture is less tolerant of over-volting. Nevertheless, Vcore settings should not exceed the following:

-> Core 2

1st. Generation 65 Nanometer ... 1.50 Vcore
2nd Generation 45 Nanometer ... 1.40 Vcore

-> Core i

1st. Generation 45 Nanometer ... 1.40 Vcore
2nd Generation 32 Nanometer ... 1.35 Vcore
3rd Generation 22 Nanometer ... 1.30 Vcore
4th Generation 22 Nanometer ... 1.30 Vcore

When tweaking your processor near it's highest overclock, keep in mind that for an increase of 100 MHz, a corresponding increase of approximately 40 to 50 millivolts (0.040 to 0.050) is required. ... "

Also, what is your ambient temperature?

CT

 

[nikoli707]

yeah i would stick to whatever 1.30v vcore will get you. 4.8ghz is aiming too high for your chip with an h100i. you would be lucky to get 4.6ghz stable. dont stress you chip out like that, it should last many many years. a few extra 0.1ghz isn't going to help you with anything.