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Possible to mod x580 fans to turn off at idle?

post #1 of 21
Thread Starter 
I have a sparkle calibre x580 coming to me with the accelero xtreme plus coming to me soon and I plan to do a fan % change mod.
What would happen if I modded the card to a 0% minimum fan speed?
Would they turn off and leave the calibre "passive" so I could put a fan profile in afterburner to only turn on at a certain point?
Or should I just stick with 20%.
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post #2 of 21
You should stick with 20% - you shouldn't be able to hear them above all your other components with 20% anyway.
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post #3 of 21
Thread Starter 
My other components are all at 500rpm or below and I will be putting in switches to turn them off at idle. So yeah as low as possible is where I want to go.
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post #4 of 21
They're not going to be audible at 20%, and with the fans off it would idle quite high. I definitely wouldn't recommend it. Using heatsinks that aren't designed to be passive as passive heatsinks isn't a good route imo.
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post #5 of 21
Thread Starter 
Quote:
Originally Posted by -Apocalypse- View Post
They're not going to be audible at 20%, and with the fans off it would idle quite high. I definitely wouldn't recommend it. Using heatsinks that aren't designed to be passive as passive heatsinks isn't a good route imo.
Well the heatsink idles so low with very low airflow on it so I think it's probable it'd still do okay passive. The only question is whether they'd have trouble starting up again or not? I assume not. Also the silver arrow for example did better in a test i saw passively than my HR-02 did.
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post #6 of 21
Quote:
Originally Posted by systemlayers View Post
Well the heatsink idles so low with very low airflow on it so I think it's probable it'd still do okay passive. The only question is whether they'd have trouble starting up again or not? I assume not. Also the silver arrow for example did better in a test i saw passively than my HR-02 did.
There's a difference in passive and passive. If ALL fans in the case are disabled, it is far different from just the high RPM fans being disabled. You have no intake of cool air or exhaust of hot air, convection currents are the only thing moving air over your heatsinks, which by definition will be hot air. The longer you have the computer running with the fans off, the hotter everything will get. I think it is a very bad idea. Get a sound-dampening case rather than disabling the fans if noise is that important to you.
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post #7 of 21
Thread Starter 
Quote:
Originally Posted by -Apocalypse- View Post
There's a difference in passive and passive. If ALL fans in the case are disabled, it is far different from just the high RPM fans being disabled. You have no intake of cool air or exhaust of hot air, convection currents are the only thing moving air over your heatsinks, which by definition will be hot air. The longer you have the computer running with the fans off, the hotter everything will get. I think it is a very bad idea. Get a sound-dampening case rather than disabling the fans if noise is that important to you.
I have a silverstone FT02B with the sound dampened walls. Fyi sound dampening mostly only reduces vibration and in some instances helps with reflection/absorbtion. But it really is incredibly minimal, the thickness of sound dampening for pcs has very little mass/absorbtion properties so they're mostly overrated/overpriced.

I know the risks. If anything got too hot I'd obviously shut it down or start the fans up all I asked was if it was POSSIBLE to turn off the fans if I modded the bios to 0%. As in if I do that will I be able to set the fans to 0% in afterburner and the fans would turn off. I was unable to find any literature specifying this so I was just wondering if it were possible. Not logical, efficient etc.

I just have the assumption that cards have a built in minimum rpm level that's something one can't mod/hack because I was unable to get my 460 below 15% (but only used NiBiTor). Just wondering if anyone knows other methods/if it's possible.
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post #8 of 21
It's definitely possible, you'll need to modify the Bios the old fashioned way, but I still would definitely caution against it.
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post #9 of 21
Thread Starter 
What do you mean 'old' fashioned way?
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post #10 of 21
Complicated enough that I don't want to explain it because I'm not perfectly clear on all the details. There are people on OCN that will do it for you though, someone is sure to chime in sooner or later.
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