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post #751 of 1118
Quote:
Originally Posted by JJFIVEOH View Post

Yeah, I hate that. Not even the 4 pin can be regulated. But why do you want all your case fans to be the same as your CPU fan speed?

Those 6 fans are my CPU fans, biggrin.gif They are on my 120x3 radiator in push pull config. The other 6 fans in my case are set to level 4 settings and are on the various other motherboard headers.
post #752 of 1118
Quote:
Originally Posted by wholeeo View Post

Those 6 fans are my CPU fans, biggrin.gif They are on my 120x3 radiator in push pull config. The other 6 fans in my case are set to level 4 settings and are on the various other motherboard headers.

Well that explains it haha.

If you have 6 fans I would think fan speed wouldn't be critical because of the large volume of air you're flowing. But you've already used those headers. I would be kind of leery of running 12 fans off my board.
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post #753 of 1118
Quote:
Originally Posted by JJFIVEOH View Post

Quote:
Originally Posted by wholeeo View Post

Those 6 fans are my CPU fans, biggrin.gif They are on my 120x3 radiator in push pull config. The other 6 fans in my case are set to level 4 settings and are on the various other motherboard headers.

Well that explains it haha.

If you have 6 fans I would think fan speed wouldn't be critical because of the large volume of air you're flowing. But you've already used those headers. I would be kind of leery of running 12 fans off my board.


Ditto on the 2 per header and 12 total. low amperage can shorten life span of fans even though they appear to be running up to speed I doubt they are. I'd get a dedicated fan controller their are plenty of good ones out there and some sophisticated ones too that control thermally. Much better solution than mfg software bios or third party (Speed fan) software.

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post #754 of 1118
Quote:
Originally Posted by owcraftsman View Post


Ditto on the 2 per header and 12 total. low amperage can shorten life span of fans even though they appear to be running up to speed I doubt they are. I'd get a dedicated fan controller their are plenty of good ones out there and some sophisticated ones too that control thermally. Much better solution than mfg software bios or third party (Speed fan) software.

Thanks but I rather take my chances before choosing to have knobs and lights in the front of my case. Wonder if they make any good internal ones that can dynamically change their speeds based on temps.
post #755 of 1118
FYI, I sent a question regarding this to asrock last week and still no answer.

Perhaps some of you know:

What amper/watt rating are the various fan headers.

With that info you can easilly determine how many fans you can hook up to a single header.

And since you can only read fan speeds on any 3rd party software for CPU1 & 2 and CHA1 it is most likely best to just hook up other fans directly to your PSU.

My findings regarding to fan speed controll:

1. fan-tastic tuning utility works for CPU1, CPU2 and CHA1 more or less dependably (if it applies those settings on win boot at all). Generally I'd avoid it.
2. If you try to set up a curve for any other fan headers, chances are you'll end up with it being applied to the wrong header and sometimes even stop some fans. Don't bother with it (though it may seem it works at first).
3. CPU1 can normally controll PWM fan through BIOS. Didn't try a 3pin one.
4. CPU2 can controll 3pin fan speed through BIOS but it is same setting as CPU1.
5. CHA1 can only controll 4pin PWM fan. Voltage controll doesn't work if you just plug in a 3pin fan.

@wholeeo:
So my suggestion for 6 fan setup you have on your radiator would be to get 2 4pin Y-splitters and one 3pin, 4 PWM fans and 2 3pin fans and use the 3 fan headers I mentioned as working (CPU1,2, CHA1). I set up something similar, though for a different purpose (upper intake, CPU push-pull, upper exhaust - I'm an air guy smile.gif).
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post #756 of 1118
Quote:
Originally Posted by lieshout View Post

FYI, I sent a question regarding this to asrock last week and still no answer.

Perhaps some of you know:

What amper/watt rating are the various fan headers.

With that info you can easilly determine how many fans you can hook up to a single header.

And since you can only read fan speeds on any 3rd party software for CPU1 & 2 and CHA1 it is most likely best to just hook up other fans directly to your PSU.

My findings regarding to fan speed controll:

1. fan-tastic tuning utility works for CPU1, CPU2 and CHA1 more or less dependably (if it applies those settings on win boot at all). Generally I'd avoid it.
2. If you try to set up a curve for any other fan headers, chances are you'll end up with it being applied to the wrong header and sometimes even stop some fans. Don't bother with it (though it may seem it works at first).
3. CPU1 can normally controll PWM fan through BIOS. Didn't try a 3pin one.
4. CPU2 can controll 3pin fan speed through BIOS but it is same setting as CPU1.
5. CHA1 can only controll 4pin PWM fan. Voltage controll doesn't work if you just plug in a 3pin fan.

@wholeeo:
So my suggestion for 6 fan setup you have on your radiator would be to get 2 4pin Y-splitters and one 3pin, 4 PWM fans and 2 3pin fans and use the 3 fan headers I mentioned as working (CPU1,2, CHA1). I set up something similar, though for a different purpose (upper intake, CPU push-pull, upper exhaust - I'm an air guy smile.gif).

I actually submitted this question to them as well yesterday. From googling around it turns out other Asrock boards have a 1 amp rating for their cpu headers so I'm hoping the OC Formula is the same. If GT-15's are rated at .083 I'm assuming a whole bunch of them can be daisy chained before the 1 amp of the header is reached assuming that it is indeed 1 amp. Someone correct me if I'm wrong.

I don't use any software for my top radiator fans which are all connected to CPU Fan Header 2. I just have a target speed they ramp up to once the CPU reaches a certain temperature.
post #757 of 1118
So I've received the following response from Asrock in regards to our fan header ratings,

Quote:
CPU Fan headers:
1. CPU_FAN1: 12 Watt
2. CPU_FAN2: 6 Watt

Chassis Fan headers:
1. CHA_FAN1: 12Watt
2. CHA_FAN2: 6 Watt
3. CHA_FAN3: 6 Watt

How one converts this over to amps for specific fans is beyond me. frown.gif

Edit: From what I've gathered it seems the conversion is amp x voltage = watts. So for my GT-15's 0.083 x 12 = 0.996 watts each if ran at max. With that said I wish it was CPU_FAN2 that had the 12W, mad.gif
Edited by wholeeo - 6/6/13 at 11:03am
post #758 of 1118
Quote:
Originally Posted by wholeeo View Post

So I've received the following response from Asrock in regards to our fan header ratings,

Thanks!

CHA4 and MOS are missing there, but I guess they're 6W as well.
Quote:
Originally Posted by wholeeo View Post

From what I've gathered it seems the conversion is amp x voltage = watts. So for my GT-15's 0.083 x 12 = 0.996 watts each if ran at max. With that said I wish it was CPU_FAN2 that had the 12W, mad.gif

You are right, W=A*V. Also, fans have rated W rating, so even easier.

Most fans are in 2-4W range. Meaning you can have 2 fans on CPU1 and CHA1, and only 1 on others, if you want to be safe. Real shame about CPU2, as you said.

I really hoped this high-end board would have 12W on all. frown.gif But since it sucks at speed controll, you might as well plug them to the PSU...
Edited by lieshout - 6/6/13 at 10:21pm
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post #759 of 1118
Hey guys,

Anyone here with a Z77 OC Formula buying or bought a GTX 780?

Any idea if this motherboard requires a new BIOS update for the new video card to work?
    
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post #760 of 1118
Quote:
Originally Posted by Conscious1 View Post

Hey guys,

Anyone here with a Z77 OC Formula buying or bought a GTX 780?

Any idea if this motherboard requires a new BIOS update for the new video card to work?

I have two and can confirm that it doesn't require a new bios update to function properly.
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