connecting fans to MoBo

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Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

connecting fans to MoBo

Post by Lt_Dan » Thu Sep 17, 2009 2:58 am

hey everyone,
i'm about to get a Noctua 1200 [$25] (to be used as a front fan- in front of the hdd)
I also have 2 scyth fans:
1. the fan that that came with my Ninja - connected to the mobo with "fanmate 2".
2. s-flex 1200 [$19] as rear case fan - connected to a molex.
my question -
can i connect all 3 fans to my mobo? (that appears in my sig).
as i read to noctua comes with 2 connectors ULNA an LNA (so they call it) can i connect my fans using these to my mobo?
thanks'
Dan.

Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

Post by Lt_Dan » Sat Sep 19, 2009 10:16 am

thanks!

i want to connect them to the mobo so i can have a read on them.
i want to connect the u\lna to the mobo.
will it show it's speed in the bios (5v\7v).

edit: 8 will be putting the noctua as a front fan in front of my hdd, and behind a tight net - to hold out dust.
will it's pressure be enough at 7v?

Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

Post by Lt_Dan » Fri Sep 25, 2009 3:37 am

so i got the noctua.

now my mobo doesn't work in the sys_fan header, it just start spinning the fan backwards and forwards like a centimeter.
what can the problem be?

beside that connecting a scythe s-flex 1200 to the ULNA (5v) cable to the cpu_fan made the fan not start exactly when the computer starts - is that normal?

can someone help?

thanks a lot,
Dan.

frenchie
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Post by frenchie » Fri Sep 25, 2009 4:03 am

Hi,
I've had ULNA and LAN adaptors connected to my previous motherboard header and they worked just fine (with Noctua fans).

Maybe the starting voltages of your fans are too high. Try switching the ULNA for the LNA and see what happens.

As for you sys_fan header, does it have an adaptor ?

Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

Post by Lt_Dan » Fri Sep 25, 2009 4:20 am

it's a 4pin header. any fan (not 4 pin fans) didn't work on it (had the problem i mentioned)

tried connecting both ULNA and ULA, and i believe straight up.

frenchie
Friend of SPCR
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Joined: Tue Jul 08, 2008 4:53 am
Location: CT

Post by frenchie » Fri Sep 25, 2009 4:28 am

Can you change the setting in the bios for that sys_fan header from PWM to DC ?

Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

Post by Lt_Dan » Fri Sep 25, 2009 4:39 am

in smart fan control? i might be able. i'll check it out later and post an update.

are there other options?

Lt_Dan
Posts: 199
Joined: Fri May 18, 2007 4:37 pm
Location: IL

Post by Lt_Dan » Sat Sep 26, 2009 3:15 pm

update:

connected the rear fan to the sys_fan.
apparently, the sys_fan gives out ~5v! so if i put a LNA it doesn't work (it lowers the v. to much).
so i connected the s-flex 1200 directly to it and it spins at ~700rpm.

I connected the forward noctua 1200 fan with the LNA so it spins at 900-1000rpm to the CPU_fan at header.

and the scythe 1200 that came with the ninja to the pwr_fan with fanmate2.
btw - what fan comes with the ninja?

it isn't connected to the bios so far as i seen.

it's too soon to tell but i think i prefer the scythe over the noctua - it remains to be seen.

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