Successfully overclocked i5 4690k to 4.2ghz but in task mananger jumps to 5ghz?

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ORION85

ORION85

Commendable
Nov 4, 2016
230
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1,690
I overclocked my i5 4690k to 4.2ghz @ 1.21v and switched it to dynamic mode when it was stable as suggested by Linus.
The motherboard debug/ temp sensor says the cpu is 28 degrees atm but task manager reads its fluctuating from 1ghz up to 5ghz which i dont understand how it can be since when i tried it on 4.6ghz at 1.25v to start out with first yesterday it reset to bios.

4.3 @ 1.25v was the highest i could run it stable after 2 hours of aida64 extreme system stability test and playing star wars battlefront 40 player online at 65 degrees.

I took it down to 4.2 @ 1.21v for a bit more longevity out of the chip, it rode at a constant 60 degrees in 2 hours of aida64.

Orion
 
Solution
Seanie280672


switch turbo off, or set turbo clocks to the same multiplier as your cpu multiplier. AIDA64 is ok for initial stability, but not 2 hours, if you want to get a good idea of stability quickly, then get IBT (Intel burn in test), set it up for 50 passes, standard, takes about 10 mins to run, but that will stress your CPU beyond belief, so make sure you monitor temps. http://imgur.com/MZ45MnZ thats mostly CPU, eventually you will want to run that on max settings, to test all cpu and all memory together.

As for other stress test, OCCT 8 or 9 hours overnight http://imgur.com/jc4tNX0
Realbench stress test, 8 hours...
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960
1st of all, AIDA64 is an easy stress test to pass, and 2 hours of that certainly doesnt show that your stable, however, as for the spiking CPU, I would say that you still have turbo and power saving features enabled in the bios.
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


switch turbo off, or set turbo clocks to the same multiplier as your cpu multiplier. AIDA64 is ok for initial stability, but not 2 hours, if you want to get a good idea of stability quickly, then get IBT (Intel burn in test), set it up for 50 passes, standard, takes about 10 mins to run, but that will stress your CPU beyond belief, so make sure you monitor temps. http://imgur.com/MZ45MnZ thats mostly CPU, eventually you will want to run that on max settings, to test all cpu and all memory together.

As for other stress test, OCCT 8 or 9 hours overnight http://imgur.com/jc4tNX0
Realbench stress test, 8 hours overnight http://imgur.com/a/Ramf5
AIDA64, 8 or 9 hours overnight http://imgur.com/BkiphhU

If its not still running in the morning or your PC is off, then you know it failed.
 
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Solution
ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
thats a great insight thank you Seanie280672. I did turn off turbo boost in the end, my bad i did even think before i should turn it off.
Im downloading the bench marks now and i'll get back to this post when all is done.

Orion
 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Ive downloaded them all and ive set up intel burn test v2.54 for 10 minutes which is running now on standard but i couldnt find out how to set if for 50 passes

I see what you ment 50 minutes

 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


At the top where it says settings, its says 64bit, and just below that it says times to run, just change that to 50.
 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Yeah no worries i saw that. It passed the 50 passes fine at a max of 75 degrees at points.

I will run the 9 hour bench marks over the next few days and nights starting from tonight when i go back to work then when i get in etc.
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


Thats great news, great for a quick test, and temps are good too, you can even push a bit further now before doing the longer tests, just run IBT inbetween raising any further, nothing you do will ever get your temps that hot again, except maybe something like video rendering.

 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Strange. I turned off turbo boost yet task manager is still showing it boosts up to 5ghz albeit at a max of 43 degrees. Yet a max speed of 4.2 is stated on the page. Could task manager be wrong? Should i turn off dynamic mode in bios?
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


Yes you can try that, it boosts 1 core if its idle, its a bit like turbo.

 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


I wouldnt allow it to go higher than 80oC-85oC tops, like I said before, nothing you do in the future will get it that hot again really, IBT gets things stressed to the MAX.
 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Ive just ran the intel burn test for 50 passes at very high and it passed with average 76 degrees, sometimes touching 77 briefly.

Should i bother running it on extreme mode or just go onto the other tests?
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


If you are happy where your overclock is now, just continue with other tests, max settings is just more memory thats all.

what speed is your cpu up to now ?
 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Will do. I turned off turbo boost and switched dynamic to static for the bench marks as apparently if you leave it on dynamic on some test it can boost it way to high, even over your stable over clock and fry things.

Also kept it static as it was going to 5ghz when it was set to 4.2 when dynamic was engaged.

So now it sits at 4.2 all the time.
 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
Just had another play with the bios setting all the individual cores to 42 and used a diffrent cpu monitor software i have 'Open hardware monitor' also switched back to dynamic mode and ran star wars battlefront 40 player online mode.

Got 50-70% core usage on all of them.

Then went back into bios and switched it back to all cores 42 with dynamic mode on and got 50-60% usage across all core pretty much even read out thus seeming more balanced and when i shut the game down they all went down to 1-5% and the ghz went down to as low as 800 so that might be a better overclock and a more accurate cpu monitor.
It didnt go above 42 all of the time in game use.

Task manager is now stuck at saying its at 4.17 all the time so i think its not up to scratch as far as accuracy is concerned.

But for safeys sake i will run all bench marks with static mode on just incase they do over crank my cpu especially 9 hour long tests.
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


Those longer tests are more gentle on your cpu than IBT, but IBT is good for finding initial stability quickly, for instance, now if you run AIDA64 stress test you should pass with flying colours, I would try the Realbench one tonight.

 
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ORION85

ORION85

Commendable
Nov 4, 2016
230
0
1,690
I will run Aida now and real bench when i go to work.

As for pushing it further it didnt seem to want to go any further than 4.3ghz at 1.25 and i wouldnt want to up the voltage to 1.3 - 1.4 as i know this is deep waters for chip temp and longevity.

Plus ive only got a £130 gaming board, if i had an x99 deluxe 2 i would feel more confident about it, build quality and all.

Yes i am happy with the good temp results so far. Must be a good chip and also i dialled in my own custom fan curve in the bios.

It laughably had 100% set at 85 degrees before and even if i wasnt going to be overclocking i think is a stupid idea to have it that high. I knocked it down to 75degrees 100%, and going down in 10-20 degrees a curve. Seems to do the job.
 
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