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post #11 of 19
Quote:
Originally Posted by cpmee View Post

In what way ? It works great on my board. On my board, the socket temp is the governing temp for both the cpu and chassis fans. If you have fans that can spin up on low voltage, you do need to set in bios the minimum fan duty cycle(or what ever its called) percentage. And set up the max temp you feel comfortable with. Then its just a matter of going into fanXpert and moving the bars. I have my graphs (both cpu and chassis) set up so that the fans are low (flat) until about 40C, then its linear up to 55C (about 10C before the max comfort temp level) Works like a charm and its smooth.


In regards to the OPs question, yes regular 3 pin connectors work fine on 4 pin headers, unless wired up wrong.

^ This. I use fan expert 2 and it works well.

If you have a PWM header, a three pin non-PWM fan will work with it, but it may be at maximum speed - uncontrollable from BIOS or fan expert.
post #12 of 19
Quote:
Originally Posted by GeneO View Post

^ This. I use fan expert 2 and it works well.

If you have a PWM header, a three pin non-PWM fan will work with it, but it may be at maximum speed - uncontrollable from BIOS or fan expert.

On every "recent" ASUS board I have used, there is an option in the BIOS (Auto under the Monitoriing menu) that allows the PWM headers to work pretty well with 3-pin fans... it does allow speed control, at least on the fans I have tried it with (at least on some of the headers, lol!)

From the Maximus VI Extreme manual
Edited by cgipson1 - 4/14/14 at 10:00pm
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post #13 of 19
Well my P8-Z68 pro didn't.

Neither does my Hero. But it has a switch on the CPU fan headers that detects 3 or 4 pin fans.
Quote:
Originally Posted by cgipson1 View Post

On every ASUS board I have used, there is an option in the BIOS (Auto under the Monitoriing menu) that allows the PWM headers to work pretty well with 3-pin fans... it does allow speed control, at least on the fans I have tried it with (at least on some of the headers, lol!)

From the Maximus VI Extreme manual
post #14 of 19
Quote:
Originally Posted by GeneO View Post

Well my P8-Z68 pro didn't.

Neither does my Hero. But it has a switch on the CPU fan headers that detects 3 or 4 pin fans.

A "switch" on your CPU fan headers? Interesting...I checked the P8Z68 Pro manual and see no mention of switches on the CPU fan headers. Checked the Hero Manual too.. no switches noted. Not saying you don't have switches... Manufacturers sometimes will do something like that and not update the documentation. Just interesting. I do see that both of these boards only have PWM on the CPU fan / CPU optional Headers... the other headers don't have PWM capability, even though some have four pins... odd. I wish the manufacturers would use some standards... but I guess pricing precludes some things.

P8Z68 pro http://dlcdnet.asus.com/pub/ASUS/mb/LGA1155/P8Z68-V_PRO/E6696_P8Z68-V_PRO.pdf page 2-26


Maximus Hero http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/MAXIMUS-VI-HERO/E8459_Maximus_VI_Hero.pdf Page 1-42

Edited by cgipson1 - 4/14/14 at 10:24pm
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post #15 of 19
Quote:
The two stock large fans are 3 pin. You're saying that Fan Xpert 2 won't have a problem with 3 pin? Can I double up two fans on one fan socket or will that mess up Xpert?
Yes, Fan Xpert 2 has no problem with 3 pin as far as the fans Ive put on it, or 2 pin fans for that matter.
Yes, you can double up two fans on one fan socket, (as long as you stay within sensible amperage limits) but for accurate rpm readings youll have to remove the yellow rpm wire from one of them.
Quote:
Few other questions. Does Fan Xpert2 know how hot the graphics card is and include that into the case fan adjusting process? That would be awesome.
Nope it doesnt, just cpu temp. To control case fan speed based on graphics card temperature, youll need a fan (or fan controller) with an external stick on sensor on it, like the old Thermaltake fans had. Then the trick becomes where to stick that sensor on the graphics card so that the case fan will respond in the manner of the case temperature ranges you want, heh. All the external fan sensors Ive had were just 10K thermistors on sticky tape and you can stick a pot in line with them if youre careful.


Quote:
The swiftech PWM splitter that was mentioned by BadTaylorX, has it's own power input (a SATA power connector, if I remember correctly). And it still works well with PWM. But you make a good point about mobo headers... and the limited amperage they can handle! thumb.gif

http://www.swiftech.com/8-waypwmsplitter.aspx

Interesting.. this link shows Molex, and yet the ones I have have a SATA power adapter....
Thats a decent value for what it is, thanks for the link.
Edited by cpmee - 4/15/14 at 2:10am
    
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post #16 of 19
@cgipson1

I didn't say the P8Z68-Pro had switches. It doesn't, they only control PWM like I said.

For the Hero, no, they don't note it in the manual. Her is an image of it. Look at the fourth image on this page:

http://us.hardware.info/productinfo/186853/asus-maximus-vi-hero#tab:photos
Edited by GeneO - 4/15/14 at 5:50am
post #17 of 19
Quote:
Originally Posted by GeneO View Post

@cgipson1

I didn't say the P8Z68-Pro had switches. It doesn't, they only control PWM like I said.

For the Hero, no, they don't note it in the manual. Her is an image of it. Look at the fourth image on this page:

http://us.hardware.info/productinfo/186853/asus-maximus-vi-hero#tab:photos

Wasn't sure which one you meant so I checked both out of curiosity. Interesting... switch is even activated by the 4-pin plug... cool! Nice to know that....
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post #18 of 19
Thread Starter 
Ugh... I totally forgot that my CPU cooler came with a splitter than changed it to 3 pin and that I had to change it to advanced which worked with the 3 pin. I'm going to connect the rear fan to the secondary CPU fan header so it spins up in sync with the CPU fans. They're perfectly aligned anyway. That means I have 1 fan header for each fan in the case.... accept the CPU cooler which has a 140 and a 120mm both on one CPU fan header.

So yeah, I guess I can use 3 pins after all. I'll try using Fan Xpert 2 and and see if I can figure it out. Maybe there's something I missed.
Edited by Drahadis - 4/16/14 at 2:43pm
post #19 of 19
Quote:
Originally Posted by Drahadis View Post

Ugh... I totally forgot that my CPU cooler came with a splitter than changed it to 3 pin and that I had to change it to advanced which worked with the 3 pin. I'm going to connect the rear fan to the secondary CPU fan header so it spins up in sync with the CPU fans. They're perfectly aligned anyway. That means I have 1 fan header for each fan in the case.... accept the CPU cooler which has a 140 and a 120mm both on one CPU fan header.

So yeah, I guess I can use 3 pins after all. I'll try using Fan Xpert 2 and and see if I can figure it out. Maybe there's something I missed.

Good... glad the advice about the "advanced" worked out for you! Doesn't really matter tha much about mixing fan sizes on the header like that... they will just run at their own respective speeds. thumb.gif
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