prime95 workers stopped working after 4.5ghz overclock

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itixmix

itixmix

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Nov 9, 2013
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I have just oced my fx 8350 to 4,5ghz and I am running prime as I type this and one of my workers #6 stopped worming within the first minute of the test and worker #5 stopped running after 6minuttes, I wanted to know why that was the case? I Have coretemps running on the side, minium temps: 17°c and Max so far: 47°C (cooler is h100i)

 
Solution
nikoli707
if your workers are stopping, you are very close to being stable. its likely you just need to up the vcore a tiny bit, especially since your temps are low enough. or test out certain levels of line load calibrations to minimize the min/max load voltage difference. disable all power saving features and use intel burn test and hwmonitor and see what your load/min voltage is being reported compared to the idle/higher voltage is(all this relative to what the bios set vcore is, they will all be different). then test a certain level of llc until you see the mix/max get closer to one another. some motherboards do this very well, some dont.

with 47c, get yourself stable at 4.5 and then start moving up to 4.6/4.7, you have a lot of...
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itixmix

itixmix

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Nov 9, 2013
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thanks for the reply, I will increase the vcore a bit and see what happens.
This is my first time doing this so may you tell me what the llc is please?
 
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chris987

chris987

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Jun 10, 2013
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load line calibration
http://linustechtips.com/main/topic/24019-load-line-calibration-why-overclockers-should-care/
http://www.overclock.net/t/1313466/cpu-load-line-calibration-what-is-it
 
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nikoli707

nikoli707

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Jan 4, 2012
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if your workers are stopping, you are very close to being stable. its likely you just need to up the vcore a tiny bit, especially since your temps are low enough. or test out certain levels of line load calibrations to minimize the min/max load voltage difference. disable all power saving features and use intel burn test and hwmonitor and see what your load/min voltage is being reported compared to the idle/higher voltage is(all this relative to what the bios set vcore is, they will all be different). then test a certain level of llc until you see the mix/max get closer to one another. some motherboards do this very well, some dont.

with 47c, get yourself stable at 4.5 and then start moving up to 4.6/4.7, you have a lot of headroom for more vcore/heat.
 
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Solution
nikoli707

nikoli707

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Jan 4, 2012
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i prefer to use intel burn test set to maximum stress level as a quick and dirty test to see where voltages are and as an extra measure, then move on to a 12 hour prime test. plus i see that ibt raises temps a tiny bit higher than prime. many will agree they have seen 12 hour prime tests fail with intel burn test.

i usually do a furmark/kombustor/etc. and prime test at the same time for an hour after passing a 12 hour prime as an extra measure to make sure everything can run together.
 
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itixmix

itixmix

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Nov 9, 2013
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I have set the llc on my mobo to ultra high at the moment, and I started again on my oc, right now I am seeing how far I can push the cpu ratio with the stock voltage, but once I start to have the workers fail I will crank the vcore a bit by bit and once I find a stable vcore i will then push the cpu ration by 100mhz a time until i need to put more vcore!

I am running prime in between each alteration but once I reach where I want to be (roughly 4.7) I will then run the test in the method you described!

Thanks
 
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