i7 7700k overclocking...

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beniburek

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So i overclocked my 7700k to 4.8GHz with 1.250v and i ran cinebench few times and everything was cool! Played games without problem, but after installing Adobe Pro Premiere i wanted to learn some editing stuff and as soon as i clicked on render the pc did shut down and was not anymore stable, even the stuff from bios came (get everything to deffault or go back to bios)... so i did put everything back to stock...
Can anyone explain me what could be the problem?
(CPU Cooler: Cryorig h7) (Even at the full load temperatures were around 70 C~)
 
Solution
Eximo
Well 1.25 for 4.8Ghz is pretty ambitious, try 1.28 if temperature allows. Premiere is probably using AVX instructions which need a lot more juice.

You could also try LLC or there is even a setting for AVX offset which you might need to increase.
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Eximo

Eximo

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Well 1.25 for 4.8Ghz is pretty ambitious, try 1.28 if temperature allows. Premiere is probably using AVX instructions which need a lot more juice.

You could also try LLC or there is even a setting for AVX offset which you might need to increase.
 
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beniburek

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Oh well, seems like that worked! Didn't know anything about ''AVX''
But can you explain me why youtubers recommend runing cinebench and if that passes then there should not be problems? So they increase the voltage while editing? (Sorry for stupid questions)
 
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beniburek

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Yep, that worked!
Thanks!
 
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Eximo

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I also use Cinebench as a quick validation tool. Generally if I have stability there my system will be stable throughout my use. AIDA64 I have used in the past to make sure it was stable under all potential conditions. I now run 'important' stuff on a laptop and reserve my tower for gaming these days.

AVX instruction sets are dedicated hardware for completing specific tasks faster then the general processing core is capable of. Under normal operation those circuits sit idle. When they are engaged the rest of the CPU is still running as well. The increased load lowers the effective voltage the CPU sees (this is more complicated, but a simplified explanation should suffice). Setting it higher in advance will keep the voltage higher under a heavy load.

Load Line Calibration is a power curve that scales with load. Higher load, more voltage applied to the CPU. Each motherboard vendor does it a little differently but for me usually one notch higher then default or off has proven to be enough to solve minor stability issues.

Offsets allow you to increase the voltage by a fixed amount under a set of conditions. The AVX offset is pretty straightforward. When the AVX instruction set is called the offset is applied.

If the core voltage was enough for you I would leave it alone though.
 
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