Gamingphreek

Lifer
Mar 31, 2003
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Title says it all, not sure if this should go here or under M/B's but oh well.

Can someone please explain to me how Q-Fan works. I would like to throttle my CPU fan down but i dont understand how the ratios work and what not.

Examples would also be nice.

-Kevin
 

PhoenixOrion

Diamond Member
May 4, 2004
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Throttle it down like 11/16 ratio = fan would spin to a certain max rpm under load.

Throttle it up to 15/16 ratio = under load, the fan spins to a higher max.
 

Gamingphreek

Lifer
Mar 31, 2003
11,679
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81
Can you give more of an example.

Like would 11/16 mean that at a certain temp the fan would throttle down and then at a certain temp it would throttle up again. I need a more basic lol explanation. (This is my one noob post per day ;) )

-Kevin
 

PhoenixOrion

Diamond Member
May 4, 2004
4,312
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Hypothetical scenario: (made up numbers)

when cpu reach a certain temp, for example 100F

11/16 = 2000 rpm
15/16 = 5000 rpm
 

AristoV300

Golden Member
May 29, 2004
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Just at lower temps with 11/16 the depending on the speed it spins will run at lower RPMs. But when the temps pick up the fan go toward the higher speed.
 

Gamingphreek

Lifer
Mar 31, 2003
11,679
0
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I sort of got it. So is 11/16 the recommended setting? Right now my copmuter idles at 40C and loads around 45C with all my case fans turned on low settings with my controller.

-Kevin
 

dug777

Lifer
Oct 13, 2004
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as aristo sez- i think the lower the first number- the lower it spins down 2- the top speed doesnt actually change- at least thats how it works on my ASUS A7V8X- or should- as far as the manual explains it to you :)

But my Q-fan hasnt been working for the last couple of BIOS flashes- tho i have no idea if it is BIOS controlled-i assume it is :p When i set 10/16 it will drop approx the right ratio- from about 3,400rpm down to 2200rpm- but then even under a d3 load it wont spin up again- so i get massive temps :p
 

MDE

Lifer
Jul 17, 2003
13,199
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11\16, 13\16 just refer to a certain fraction of the normal fan speed.