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03-03-2019

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Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-03, 18:10 PM

Hi everyone, i was wondering if my Y720 cube that has a i7 7700 cpu, Gtx 1070 gpu, 16gb ram, 1tb HDD and a 450 80 plus bronze PSU could handle getting overclocked?

In other words, nvidia recommends that you should have 500w PSU for Gtx 1070, but we get a 450w PSU with the cube, so it worries me a little if it is even possible to overclock without damaging the pc, since its not even at the recommended watt.

In fact i tried overclocking in valley benchmark and got to this:
+180 core clock
+550 Memory Clock
112% Power limit
Core voltage at 0 (didn't touch it) 

Besides my temperatures sky rocketing (gpu 80c, 65% fan, cpu 75c) The performance gains was amazing and very satisfying, but i could even go higher with the core clock, but that would acctually make me lose fps for some reason, especially if i changed core, memory didn't do much. 

In the end i turned it off because the PSU 450watt scared me. So what is the real deal here? Is it realstic to overclock lenovos y720 Cube or not? 

Thanks in advance!


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271 Posts

02-06-2017

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Re: Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-04, 17:00 PM

Greetings and welcome new Lenovo forum user from Sweden,

 

The Nvidia 500 watt power supply recommendation is somewhat based on a worst case scenario of an entire system's peak current consumption.

 

The power supply is only component that possibly overtime (years) will be harmed by overclocking and if the GTX 1070 does not get the power current required for strained overclocks it will automatically resettle and ignore overclock set by user.

 

There is Nvidia's GPU Boost that also does overclocking from within the video card's firmware with no need of user interaction.

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10 Posts

03-03-2019

SE

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Re: Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-04, 17:26 PM

I see, interesting.. The link you sent, it says it 80c as target temperature, is that when the gpu boost is at its best efficiency? i heard the gtx 1070 start to throttle at 85, what kind of temperature should i be aiming for? The cube gets hot as i mentioned at my OC (roughly 80c)
Is that ok? Will it damage my gpu/psu?

Thanks

Hugo

EDIT: If PSU takes damage and breaks after "some years", won't it take my gpu or motherboarad with it? I've heard PSU tend to do that, destroy other pc compenents when they fail?

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271 Posts

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Re: Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-04, 18:14 PM

Any and all systems are dependent on ambient temperatures and graphics cards are engineered to run at 80°c but 94°c is the maximum the GTX 1070 should go and will really throttle back as it close to that also depends on the graphical demands of the software running.

 

Yes the power supply could case harm to other components when it goes bad but this could happen even overtime (say 5 years) regardless if one is taxing it with a graphics card. Everything has a finite life span and no way of telling when it will all go wrong.

 

Should not worry to much about damage to the graphic card or the power supply they have fail safes. Just make sure the system has adequate airflow in and around it.

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10 Posts

03-03-2019

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Re: Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-04, 21:22 PM

Thanks for the help. Yesteryday i opened and dusted off my pc but the graphics card fan was really hard to get to. I will try to dust off it aswell but the ITX towers are so small that the heat gathers pretty easily inside right? I guess the only way would be to open one side of the pc to make air ventilate easier, but dust could also get in easier... hmm..

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271 Posts

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Re: Y720 Ideacentre Cube overclock, Safe for PSU?

2019-03-04, 23:04 PM

Yes good point that I was not thinking of when posting, dust buildup.

 

I look in my system at lest once a month remove debris with an old toothbrush and/or blow it out and do biannual thorough deep cleanings, take the graphic card out of system one time a year to blow dust out of heatsink.

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