How would you do it ?

bbbearrr

bbbearrr

bbbearrr

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Hi all,

I'm going to be re-casing a computer into a Bitfenix Shinobi

This has room for 2x120mm at the front and 2x120mm/140mm at the top with one exhaust at the back which is at 120mm.

I have a Gigabyte GA-EX58 UD5 motherboard.

Processor is cooled with a noctua nh-u12p. Which has two fans.

Also worth mentioning I have a 750w modular PSU

My question is what would be the best way of powering all these fans.

I'd like to get pwm fans to keep idle noise down too.

Thans in advance for your help !
 
There are a couple of options you could go with tbh

1. Use 3pin fans and buy a fan controller (slightly more expensive route)
2. Use a PWM splitter on the PWM sys_fan header

Looking at the board I can see that the SYS_FAN2 header is PWM (other than the CPU header the rest are only 3pin). So you could use an Akasa FLEXA FPS5 cable.

Using that I'd put my CPU cooler fans on the CPU header by themselves and then use the splitter on SYS_FAN2 to control the case fans separately.
 
Sorry but I'm pretty sure the only PWM header on the UD5 is the CPU_FAN header. (Using one myself)

I've built several systems now using the motherboard CPU fan PWM signal to control PWM case fans.

Have also controlled case fans supplying air to GPU using PWM signal from GPU.

I suggest not using that Akasa splitter because all the leads terminate with heatshrink than a little length of wire into socket pins. This sort piece is where wires flex and stress fatigue than start breaking off leaving fan either not running at all or running full speed all the time. Gelid makes PWM splitters that run a lead about 20cm out from socket and than split it into leads to all the fan connectors.
 
doyll said:
Sorry but I'm pretty sure the only PWM header on the UD5 is the CPU_FAN header. (Using one myself)

I've built several systems now using the motherboard CPU fan PWM signal to control PWM case fans.

Have also controlled case fans supplying air to GPU using PWM signal from GPU.

I suggest not using that Akasa splitter because all the leads terminate with heatshrink than a little length of wire into socket pins. This sort piece is where wires flex and stress fatigue than start breaking off leaving fan either not running at all or running full speed all the time. Gelid makes PWM splitters that run a lead about 20cm out from socket and than split it into leads to all the fan connectors.
Click to expand...

eLcERTi.jpg


Circled and magnified looks suspiciously like a 4 pin PWN header to me.
 
Looks can be deceiving. Not uncommon for 4 pin headers to only use 3 pins. The PWM pin not being used by anything. Look it up if you don't believe me because I have a UD5 and 2 UD3R boards like this. Also Asus boards often have 4 pin headers that only have 3 pins used.
 
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Resident said:
Agreed. Given how meticulous mainboard manufacturing is.
Click to expand...

Hey Resident,

tried to PM but cant see where i can on here. just wanted to thank you for your help with my last couple of threads.

Earlier today I order the shinobi, the pwm splitter and a few others bits including some thermal paste and cleaning fluid !

gonna give the system a good clean out for its new home !
 
Both of you really need to know what you are on about because that's the way it really is.
Notice only CPU_FAN has PWM
900x900px-LL-8337f5d2_Capture.PNG


Now how about one of you prove me wrong!!
 
Jesus calm down, I don't actually care. :confused:

Congratulations? Well done? :rolleyes:
 
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Your bottom 4pin fan plug will not supply PWM. You can take that to the bank.

I've been though this trying to get PWM to work on my Gigabyte motherboards.
 
Old 29th Sep 2009, 08:50 #6
amigafan2003
Soldato

Joined: Jan 2008
Posts: 5,556

PWM only seems to work on the F8 bios and up and only on the CPU header at that.

To enable PWN you set the PWM function in the bios then you set the required temps/fan speeds in Easytune - i.e. 10% @ 30c cpu temp and 100% @ 70c cpu temp - it will the ramp between the two speeds depending on the cpu temp.

All the other fan headers are fixed voltage.
Click to expand...

Post #6 in below thread
http://forums.overclockers.co.uk/showthread.php?t=18059171
 
doyll said:
PROVE IT!! Because you can't prove me wrong!
Click to expand...

Just look at the header layout from the image of the actual mainboard I posted and the image you posted.

Then just to compound it, look at the SATA, USB, 8pin 12v, PCI-E... Do I need to go on?

The fact that you went 'all caps rage' is, well astounding.

Stop acting like an 8 year old and man up to admit you got it wrong.
 
I just thought you would like to know that I did a bit of digging, and the bottom (SYS_FAN2) header on the GA-EX58-UD5 has the pinout:

GND
Speed Control
Sense
+5V

Which just suggests that the speed control is done through the 12v pin rather than the 5v pin like on most PWM headers.

And there are two regular 3 pin fan headers, a PWM CPU fan header and a 3 pin header marked 'NB (northbridge) fan' elsewhere on the board.

Source: http://download.gigabyte.eu/FileList/Manual/motherboard_manual_ga-ex58-ud5(p)_e.pdf

Can we move on now? :p
 
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