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Need Help w/ a fan - NidecBetaV??

post #1 of 20
Thread Starter 
I found this fan from an old dell that i scrapped....


It was the CPU cooler fan, and its 4 wires so i assume its pwm.
The wires are not standard colors, and id like to get PWM to work
The wires are Red, Black, Blue and White.

Also is this fan even any good? it looks like its a 120x35mm and i quickly wired it up to 12v and holy crap it literally flew backwards.
    
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post #2 of 20
black = ground
red =12v
blue=pwm
white=rpm sense

12v 1.40 amps, good fan. careful not to blow your fan header.
post #3 of 20
Thread Starter 
i can blow my fan header with this?!
My mobo is in my sig rig. can it handle this fan on the PWM slot (Not the CPU PWM slot)
    
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post #4 of 20
I don't know what PWM slot you're referring to, but I would contact Asus Support and ask what is the max amps this other PWM fan header support before using the fan
post #5 of 20
Thread Starter 
my mobo has 2 PWM's one for the CPU and another just called Cha1.
    
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post #6 of 20
@ iCrap

Please... I repeat, please... Do NOT plug this fan to your motherboard header; it will blow it up. Motherboard headers are rated for up to 1A (12W) fans and some manufacturers even recommend not going past 0.5A (6W) fans on there; some may take a bit more some may not... Your issue is that this fan is rated for 1.4A (16.8W) regular draw, but the startup current will be closer to 2A (24W). You could take the black/red wire (GND/+12V) and wire the fan directly to the PSU for 12V current while only plugging the PWM/Sense wires to the motherboard header; that way you have rpm readouts in BIOS and with SW in OS and you can also control the fan's speed through BIOS or SW in OS... But whatever you do... DO NOT plug the power wires to the motherboard header; you'll see smoke come out of that header in 5 seconds flat.
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post #7 of 20
Quote:
Originally Posted by xXSebaSXx View Post
@ iCrap

Please... I repeat, please... Do NOT plug this fan to your motherboard header; it will blow it up. Motherboard headers are rated for up to 1A (12W) fans and some manufacturers even recommend not going past 0.5A (6W) fans on there; some may take a bit more some may not... Your issue is that this fan is rated for 1.4A (16.8W) regular draw, but the startup current will be closer to 2A (24W). You could take the black/red wire (GND/+12V) and wire the fan directly to the PSU for 12V current while only plugging the PWM/Sense wires to the motherboard header; that way you have rpm readouts in BIOS and with SW in OS and you can also control the fan's speed through BIOS or SW in OS... But whatever you do... DO NOT plug the power wires to the motherboard header; you'll see smoke come out of that header in 5 seconds flat.
What are you talking about??? My ASUS board(sig rig board) can handle 1a~7a(84w max) at 12v as per my user manual, every mobo is differint. You are correct to warn the OP to not plug in the fan untell confiming the his mobo header can handle it...but most can actualy handle alot nowdays. Mine can handle 2 San Ace 1011's according to ASUS
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post #8 of 20
I stand corrected then. I was always told by people "supposedly" in the know that fan headers on mobos were rated up to 1A and I've always gone by that.
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post #9 of 20
Quote:
Originally Posted by iCrap View Post
my mobo has 2 PWM's one for the CPU and another just called Cha1.
In the ASUS P7P55DE-Pro manual, it states the max 2a rating for the CPU fan header, but like I said check with support just to confirm.
post #10 of 20
Thread Starter 
Uh im a little scared now lol...
I will have to check with Asus before i break something.
    
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