OCCT linpack stability signs

[the lobotomite]

What are signs of a stable overclock in OCCT? I'm messing about overclocking on my old hardware (AMD A8 3870k) and I'm just going for a raw CPU overclock on air not using the dedicated graphics chip and I'm getting periodic drops in CPU usage but the memory usage and stressing always stays at the same level . I'd really appreciate a fast response because I want to learn how to overclock and spot signs of instability before I go onto my new kit (AMD FX 6300)

 

[nikoli707]

in occt linpack its normal for you to get drops down to around 75-80% and then back up to 100%. you should be monitoring the cpu temps though and if your going over 80c then your at your thermal threshold and need better cooling if you want more. other than that as far as stability... if the computer is still running then your stable as usually you will bsod. you should use prime95 for a long stability. i personally like to use intel burn test set to maximum stress for initial voltage tuning and a quick n dirty stability test. if you can make it through a pass of IBT at max stress then do a long 12 hour prime95 small fft test for final stability check. just keep those temps under 80c

 

[the lobotomite]

in occt linpack its normal for you to get drops down to around 75-80% and then back up to 100%. you should be monitoring the cpu temps though and if your going over 80c then your at your thermal threshold and need better cooling if you want more. other than that as far as stability... if the computer is still running then your stable as usually you will bsod. you should use prime95 for a long stability. i personally like to use intel burn test set to maximum stress for initial voltage tuning and a quick n dirty stability test. if you can make it through a pass of IBT at max stress then do a long 12 hour prime95 small fft test for final stability check. just keep those temps under 80c

It stays at around 68 deg C whilst using linpack but it drops to around 15% CPU usage for the same amount of time as the last one and freezes for a couple of seconds which I would of thought is bad thing but I'm not the expert with experience on this

 

[nikoli707]

use prime95. if a worker stops then your having stability problems but are likely very close to being stable. usually prime95 will just flat out bsod if your not close to being stable. 68c is fine, sounds like you still have some overclocking headroom.

 

[the lobotomite]

use prime95. if a worker stops then your having stability problems but are likely very close to being stable. usually prime95 will just flat out bsod if your not close to being stable. 68c is fine, sounds like you still have some overclocking headroom.

I might but I'm pumping 1.5125 volts through it which is 0.1 volts more than the stock so I think I'm going to leave it there I have booted into windows with an overclock of 3.92ghz (up from 3.0ghz current 3.63ghz) I did try SuperPI with it (something I've always used when getting a new CPU I just assumed it would be good for stability because I'm a newb) and it BSOD about half way through I didn't manage to CPU-Z the overclock though so I'm going to try Prime 95 now and report back thanks for the help!

 

[nikoli707]

hmmm, search around for what is the agreed upon safe operating voltage range for llano chips. 1.5125 vcore seems a little high but maybe not, im not to familiar with llano or trinity overclocking.

 

[the lobotomite]

hmmm, search around for what is the agreed upon safe operating voltage range for llano chips. 1.5125 vcore seems a little high but maybe not, im not to familiar with llano or trinity overclocking.

I'm just about to begin the Prime95 so I just quickly found this http://www.tomshardware.co.uk/slideshow/CPU-Z-max-overclock,0101-347319-0-2-3-1-jpg-.html they had theres running at 1.512 volts so it seems fairly normal because the stock voltage seemed a little high to me but I suppose it's normal for this APU

 

[nikoli707]

http://www.tomshardware.com/reviews/a8-3870k-apu-overclocking-guide,3260.html

on here it seems the amd guy doesn't really recommend above 1.40v unless you have superior cooling. that said, it may not be that bad and he is just covering his behind by recommending a very conservative number.

http://www.overclockers.com/overclocking-amds-llano-apu/
over here it likes like they have done exactly what you have. gave the core 0.1v more and did the best they could with that. remember everything is tied together so the memory will overclock too. if you run into memory troubles then you may need to manually raise the cas timings to get it to work right. good luck.

 

[the lobotomite]

http://www.tomshardware.com/reviews/a8-3870k-apu-overclocking-guide,3260.html

on here it seems the amd guy doesn't really recommend above 1.40v unless you have superior cooling. that said, it may not be that bad and he is just covering his behind by recommending a very conservative number.

http://www.overclockers.com/overclocking-amds-llano-apu/
over here it likes like they have done exactly what you have. gave the core 0.1v more and did the best they could with that. remember everything is tied together so the memory will overclock too. if you run into memory troubles then you may need to manually raise the cas timings to get it to work right. good luck.

In the Tom's Hardware one the AMD guy says 1.4 volts on the FSB which is the GPU voltage I believe he didn't say anything about the CPU Vcore voltage and the Overclockers one is the one I originally followed but it was for the non-K version of the processor so it raises everything and I know about the memory timings it appears my "old" corsair XMS3 1600mhz 2x2gb is a solid kit I'm getting 1600mhz cas 9 1866 cas 9/10 on some of the timings and 2133 cas 10! I don't want to use my Corsair Dominator with my FX 6300