Unstable OC Help

Juniper

Juniper

Juniper

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19 Mar 2008
Posts
367
Having some trouble with the OC on my system. Been in place for some time and hasn't caused me any noticable issues, but I have noticed quite a lot of WHEA errors in Event Viewer and trying Prime 95 with In-place FFT selected BSODs in a matter of minutes.

System is:

I3570k @ 4.2Ghz
Gigabyte GA-Z77-D3H
8GB Corsair Vengeance RAM @ 1600Mhz XMP

The 4.2Ghz is set by the Turbo Boost ratio and Vcore is 1.275. Most other things are set to Auto. Barely breaks 60 degrees under load but from reading about, 1.275 seems high for 4.2Ghz, but isn't stable so am I missing something?

Thanks!
 
should be guides for 4.5ghz,4.6ghz and 4.8ghz

set your own ram settings though or enable xmp memory profile

if its unstable simply add one or two clicks more dvid voltage

main whea errors to worry about are parity 19 cpu errors/warnings and memory errors/warning,few clicks more dvid (cpu voltage will cure it)
 
I've been using CPU-Z, Core Temp and P95, are there any other programs I should be using and how long should the stress testing go for each step?
 
bout 3 to 4 hours for prime although I don't use it as im impatient

I just do 5 runs with intel burn test,i would use high stress not maximum as it will heat up the cpu too much

once it passes that then play some games to test for stability and to see if any of those whea errors crop up,if they do add one two clicks more dvid and play games again

till you get 0 parity 19 cpu whea warnings/errors,then you can say your stable

keep cpu voltage below 1.4v and aim for 80-85c core temps
 
CPU-Z is reporting my Core Voltage at 1.284 when the CPU has stepped down to 1.6Ghz, which then drops to 1.236 under load from IBT.

Just so I'm clear in my own mind, I need to reset the BIOS profile to Optimised Defaults then make sure the VCORE is set to normal and LLC to Medium.

Start Windows and run IBT and adjust DVID until it's stable. Repeat for each increase in the Multiplier until I'm at my target of 4.4Ghz.

Once I'm at the top end, do I then look at undervolting for when it's stepped down?

Cheers for your help guys!
 
for 4.4ghz you might not need to add any extra voltage in dvid

can try just setting llc to medium,cpu voltage to normal,pcie/cpu clock to 100 and cpu multi to 44x

then see how it is,if you need more voltage then try +0.005v dvid and so on +0.010v ect
 
Boots at 44x with no voltage adjustment needed.

Running 10x IBM stress level High at the moment.

Hitting 84 degrees at 1.308v.

Edit: Passed

Edit2: 2 WHEA Event 20 Errors.
 
Last edited:
does it say what they are? if you double click on them it will say

if no whea 19 errors then your ok (you tend to get these real quick in gaming not so much in stress testing)

could even try to undervolt now so try setting -0.005v in dvid or even -0.010v and so on (- to take off not + to add)
 
Last edited:
wazza300 said:
does it say what they are? if you double click on them it will say

if no whea 19 errors then your ok (you tend to get these real quick in gaming not so much in stress testing)
Click to expand...

Event 19 :(

A corrected hardware error has occurred.

Reported by component: Processor Core
Error Source: Corrected Machine Check
Error Type: Internal parity error
Processor ID: 0

The details view of this entry contains further information.
Click to expand...


could even try to undervolt now so try setting -0.005v in dvid or even -0.010v and so on
Click to expand...

BIOS is reporting vcore as being 1.215, is that too high?
 
if they are event 19 then you need more dvid so you cant really lower it

so stay on plus +0.0,maybe try +0.010v or +0.015v now

that voltage isn't high,each cpu will be different
 
Those temps are ok though,ibt is very stressfull

Day to day usage and gaming won't get the CPU that hot,maybe mid 50's low 60's in gaming
 
What cooler are you using?

You can try a fixed CPU voltage some chips work better in needing less voltage but it won't downclock itself in speed/voltage at idle

You might need few clicks more dvid till 0 errors
 
Yh or try a lower oc for now,maybe 4.2ghz? Keep same voltage

That's the trouble with ivybridge they run hot
 
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