CPU fan - Which way must it blow?

Rid1 · Post by **Rid1** » 21 Feb 2006, 14:23

One of the fans in my case was making a normal fan noise...I got irritated by it and stopped each fan with a screwdriver to see which one makes the noise....

Upon doing this on my CPU fan, it shattered all the blades off, leaving no fan! I simply took an old fan from a PSU and glued it on - DON"T LAUGH!!!

Is the breeze supposed to blow from the fan onto the CPU or is the FAN supposed to blow the heat from the CPU out? I ask this cause my case gets very very hot itself with three fans inside it!!!

Also The original Fan had 3 wires and the replacement fan has 2 wires and because of this i get a CPU fan error upon Boot-up - but the fan still runs anyway - Its currently blowing the air onto the CPU - is this right, and is there a way i can get rid of the CPU FAN error - the bios has no option for that - The pc does carry on booting by itself upon this error - i do not need to acknowledge the error!

DEeRaY · Post by **DEeRaY** » 21 Feb 2006, 14:28

maybe you should just buy a new CPU fan to be safe
But to awnser ur question, The Fan is supposed to blow down on the CPU and the 3rd wire is to report how fast ur fan is spinning

But cmon dude, GLUE lol, Get a new fan.. they be cheap

Post by **KillerByte** » 21 Feb 2006, 14:29

LOL LOL LOL LOL

This is really worrying. Sticking a screw driver into the fan to see if it is making the noise. Well, the reason it has 3 wires is because one of them reports fan speed back to the mobo.

Listen to me clearly!!!

You need to buy a new HSF... NOW!!!

simmy · Post by **simmy** » 21 Feb 2006, 14:45

eish Rid

/me smacks Rid upside his peazzy-head hehehehe

PC 101
1. Dont stop fans with screwdriver.

Post by **Kronos** » 21 Feb 2006, 14:48

Let me go a in a different direction and say that the fan making the noise is most probably the PSU fan. They seem to go quicker than any other fans.

goku · Post by **goku** » 21 Feb 2006, 14:55

Rid you knew this was going to happen when you posted it

Honesty is not always the best policy

:)

DarkStar · Post by **DarkStar** » 21 Feb 2006, 15:31

Next time just use your finger and slow it down by pressing in the MIDDLE of the fan where there are NO blades!

Really, what were you thinking?

Rid1 · Post by **Rid1** » 22 Feb 2006, 07:53

@deeray - Glue from a Glue Gun works wonders!!!

@killerbyte - I know the third wire is to report whetehr the fan is spinning, can't i just connect it to the positive line - to avoid the error? - Anyways the PC is much quieter now that I've made my own fan - I will get the replcement shortly after Payday like you say - cause i can't take these random freezing of the PC too well!!

@Simmy - LOL

@Kronos - Thanks for the professional answer

@goku - I had to somehow explain how the fan broke!!! Honesty is the best policy - it would have come out anyway!

@darkstar - The middle of the fan was covered by a grid! I thought , I was either going to risk my Finger or a screwdriver - What did you think i thought?

DeathStrike · Post by **DeathStrike** » 22 Feb 2006, 09:10

lol the cpu fan can't do anything to your finger. i have stopped mine already. It don't hurt dude.

Rid1 · Post by **Rid1** » 22 Feb 2006, 11:53

Maybe your's didn't spin that fast! Mine did!

Fallen-Angel · Post by **Fallen-Angel** » 22 Feb 2006, 13:43

LOL, event at 8000RPM a cpu fan won't hurt your finger (exept if you press ur nai in front of the blade... use the back side)

But the thing is it is best for your cpu fan to blow onto the heatsink.

Belix · Post by **Belix** » 22 Feb 2006, 15:11

or how about this for a completely insane wild crazy idea ... wait for it ... - unplug the fan power plug! Holy bananas...

DarkStar · Post by **DarkStar** » 22 Feb 2006, 15:17

He has a point there...

Fallen-Angel · Post by **Fallen-Angel** » 22 Feb 2006, 15:42

AlphA · Post by **AlphA** » 22 Feb 2006, 15:57

RiD1 wrote:@deeray - Glue from a Glue Gun works wonders!!!

Wont the heat from the HSF melt the glue from a gluestick used in a glue-gun? If you re-apply heat....it just goes back to liquid form!

Bobendren · Post by **Bobendren** » 22 Feb 2006, 16:39

AlphA wrote:Wont the heat from the HSF melt the glue from a gluestick used in a glue-gun? If you re-apply heat....it just goes back to liquid form!

haha! that's right. that fan is gonna get owned.

LordMerlin · Post by **LordMerlin** » 27 Oct 2006, 22:50

This might sound funny. About 5 years ago I got an old Pentium I PRO mobo & PCU. I think it's a 133Mhz CPU, but it's those big old socket 8 CPU's. Anyway, the guy gave it to me, cause he didn't have the heatsink, or the heatsink clip, or the fan.

So, I got a piece of heatsink from G.T Electronics in Boksburg, and took a standard PSU fan, since this is about the size of the CPU. The heatsink is held down with some tie straps, and the fan tied to the heatsink. Well, the "firewall" hasn't given any problems since. The only reason it's not been up for a solid five years is cause I only have a 500VA UPS, which only lasts about 20 mins, and eskom often goes down for an hour or so.....

Ike · Post by **Ike** » 28 Oct 2006, 00:38

RiD1 wrote:One of the fans in my case was making a normal fan noise...I got irritated by it and stopped each fan with a screwdriver to see which one makes the noise....

Upon doing this on my CPU fan, it shattered all the blades off, leaving no fan! I simply took an old fan from a PSU and glued it on - DON"T LAUGH!!!

Is the breeze supposed to blow from the fan onto the CPU or is the FAN supposed to blow the heat from the CPU out? I ask this cause my case gets very very hot itself with three fans inside it!!!

Also The original Fan had 3 wires and the replacement fan has 2 wires and because of this i get a CPU fan error upon Boot-up - but the fan still runs anyway - Its currently blowing the air onto the CPU - is this right, and is there a way i can get rid of the CPU FAN error - the bios has no option for that - The pc does carry on booting by itself upon this error - i do not need to acknowledge the error!

ROFL, LOL....

ai...

Bobendren · Post by **Bobendren** » 28 Oct 2006, 02:03

Bobendren wrote:
AlphA wrote:Wont the heat from the HSF melt the glue from a gluestick used in a glue-gun? If you re-apply heat....it just goes back to liquid form!
haha! that's right. that fan is gonna get owned.

Man, i don't remember posting that. It's a completely useless statement. Must have been trying to raise my post count or something.

AlphA · Post by **AlphA** » 28 Oct 2006, 07:26

LOL @ Bob! hehehe

Rid1 · Post by **Rid1** » 28 Oct 2006, 08:13

LOL i dont remember posting this TOPIC either...
But i eventually got a new HSF then, but still i had to glue it down cos it was the wrong size i bought, but the PC is going happy now....
@Alpha - the glue doesnt touch the Heatsink itself, I glued the fan corners down to the plastic clamp that keeps the Heatsink firmly attached to the CPU and the MB!
The glue works wonders, also easy to remove when needed to do so!

Belix · Post by **Belix** » 30 Oct 2006, 12:23

Heh, I was thinking, damn I'm sure I posted in a topic along these lines ages ago. Then I checked the date....

DeathStrike wrote:lol the cpu fan can't do anything to your finger. i have stopped mine already. It don't hurt dude.

I would not recommend it. I've had a thumb nail cracked in half thanks to a computer fan. They're not friendly all the time...

Hman · Post by **Hman** » 30 Oct 2006, 12:40

Soft fingers, eh? Don't be sissies grab the bull by the horns, or shall I say grab the fan by the blades.

Rid1 · Post by **Rid1** » 30 Oct 2006, 12:43

hman how slow does ur fan spin?

Hman · Post by **Hman** » 30 Oct 2006, 12:46

I've had fans that spin over 6000rpm, but currently the fastest fan is my stock cpu fan which spins around 3500rpm

Edit: What you don't do is stick your finger straight into or angled into the rotation of the fan. Just let your finger drag over the blades with your finger pointing in the rotation direction.

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CPU fan - Which way must it blow?

CPU fan - Which way must it blow?

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