My CPU may be unstable?

[Macgruber]

So I'm passing all Prime 95's tests for hours

I load IBT and in standard it tells me i've failed the test and that my CPU might be unstable

should i increase the voltage or should i just keep running at the voltage i am now since the burn test crashes but pc doesnt


im new bare with me all help is appreciated, links as well, the search feature is my friend but hes not helping me out as expected

 

[Macgruber]

i have gone to 3.8ghz @ 1.150v to 4.2ghz @ 1.205v and steadily increasing trying to pass IBT

edit - i have finally passed the IBT standard test twice (10times)

i am "stable" at 4.2ghz v1.2350, is this bad or good? ive seen people be stable at less i beleive

however ive been doing the test many times and as im writing this and running the test it failed XD maybe i shouldnt do both but should i keep increasing the voltage untill it passes the test regardless of what im doing on pc?

at this point i dont know if its worth 3.8ghz @ v1.150 or 4.2ghz @ v1.235

edit- still increasing voltage since ibt will randomly fail. seems to pass a 10 run test, a 20 run test, then i do a 10 run test and it fails

D:

 

[Z15CAM]

im new bare with me

Might help if you described the Platform your running - For instance the CPU ;o)

 

[Macgruber]

Might help if you described the Platform your running - For instance the CPU ;o)

srry

i7 2600k 4.2ghz @ v1.25000 on a msi z77a-g45 with corsair vengeance 1866mhz pc15000 ram

i have ram on XMP running 1866mhz v1.5

so i fail like 1 out of 50 test on IBT and its always a random test on high. sometimes i do 10 without fail then i start again and 4th or 6one fails. its really random does this mean i need to keep upping the voltage untill i fail 0/100 tests? or will i be able to still run pc stable 24/7? if thats the case i can bump down -0.010+ volts but if not i guess i need to increase?

 

[BTRY B 529th FA BN]

Is it a multi use machine? or just a gaming rig?

 

[Macgruber]

Is it a multi use machine? or just a gaming rig?

its a all i one, runs 24/7 most of the time and it actually uses about 50-70% of ram and stays at 15-55% cpu usage all the time

i havent crashed with the voltage im running, but if thats the case i could lower it down a tad bit, i also dont know if i need to be passing every single IBT regardless.... i mean is IBT foolproof? is it safe to say if i fail a IBT test at any given point my machine truly isnt unstable? im running 34-50%cpu and 42%ram right now at 50-54*C

i just want maximum performance but i dont know if its worth the voltage for 4.2ghz vs my 3.8ghz .... i know the comp will perform better but is it truly worth it?

i know im not OC'ing hard but i am killing my CPU's life regardless right? my goal is to get best performance+best lifespan and if that is the case should i just OC to regular stock voltage and max of 3.8ghz constant without turbo boosting it?


sorry i know im all over the place but i know people have the answers to my noob questions without saying "google it" and reading 20 blogs !

 

[VirtualLarry]

i also dont know if i need to be passing every single IBT regardless.... i mean is IBT foolproof? is it safe to say if i fail a IBT test at any given point my machine truly isnt unstable?

I think that you meant to say, "truly isn't stable". But that is correct, fail any stress-test program, and your computer is not stable.

 

[Ferzerp]

Crash any time, not due to an actual application/os problem, and it isn't stable.

 

[Rvenger]

Check in Event Viewer under Warning if WHEA Logger shows up with a processor core error. It sounds like you might need a little more Vcore or less LLC.

 

[Idontcare]

i havent crashed with the voltage im running, but if thats the case i could lower it down a tad bit, i also dont know if i need to be passing every single IBT regardless.... i mean is IBT foolproof?

You should be so lucky that your system is so unstable as to actually do something un-ignorable like crash on you. You can't ask for a bigger red flag, more proof positive, that your system is unstable.

The worse situation is when your system doesn't crash, it is "less" unstable as you might put it, but in reality it is causing all sorts of havok on your files because of silent data corruption.

You need more voltage, or lower clocks, or better cooling, or all three

 

[Macgruber]

You should be so lucky that your system is so unstable as to actually do something un-ignorable like crash on you. You can't ask for a bigger red flag, more proof positive, that your system is unstable.

The worse situation is when your system doesn't crash, it is "less" unstable as you might put it, but in reality it is causing all sorts of havok on your files because of silent data corruption.

You need more voltage, or lower clocks, or better cooling, or all three

i havent messed with the LLC that the guy mentioned above , im not even sure what it is

and my vcore is 1.250, i run max 65*C under 100% load on ibt/p95, should i just keep increasing vcore by 0.05 untill i can pass IBT test 100x? i am trying to find better guides on OCing a i7 2600k on z77a-g45 but no luck

u guys are teh only ones halping me ^^
edit- i m trying to read up about LLC right now, its not like i found a spot on guide for my mobo+cpu and what settings to focus on so ive been taking bits and pieces, i know its not good but its my only source

 

[dma0991]

i m trying to read up about LLC right now, its not like i found a spot on guide for my mobo+cpu and what settings to focus on so ive been taking bits and pieces, i know its not good but its my only source

MSI's implementation of LLC or as they call it, Vdroop Control has very poor description. The manual isn't helpful other than saying "This item is used to select the VDroop control".

Anandtech MSI Z77 MPower Review

We can essentially interpret the OCP and switching frequency options which are common overclocking terminology, however the VDroop option gives values between 0% and +100% in 12.5% increments. This is in itself odd, and the BIOS does not tell you whether you want 0% or 100% for constant voltage. Does 100% mean you get 100% all the time, or that it drops 100% of the voltage at full load? The Digital Compensation Level option is just as erratic, as it does not tell you what it is compensating or what you want for a good overclock.

My original overclock at 4.5GHz is set at 1.295V which will droop to 1.28V. It is stable at 1.28V but with the newer BIOS, it droops even further to 1.264-1.272V which causes instability while running stress testing applications. The goal of Vdroop control is to keep it as close to the voltage you've specified, in my case, 1.295V. I think that the Vdroop Control is flaky as it would crash before it reaches the desktop, be it at 12.5% or 100%.