I just put a K63 Hsink and fan on my celery cause it is heaps better but the fan is real slow, like you can just merely touch it and it stops. Is there any way to speed up the fan ? Its a Ball Bearing sleeve fan.
Give it more "juice". More power. If it is getting it's power from the MoBo, there's your problem. MoBos have a limit to how much current they can supply. Hook your fan to the "pigtail" of wires that leads from your power supply to your drives, etc. There should be at least one end free... Hook the red wire from the fan to the yellow wire in the pigtail, and the black to the black. (either one)
Don't worry. If you hook it up backwards, it simply won't work. Reverse the connections and try again. No harm done.
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Hey Luke: What Dark Need said is correct. You will be connecting to the +12 volt and ground wires from the power supply. If you want to "overclock" your fans to really make them hum (NOT RECCOMMENDED!) then you can hook the red fan wire to the yellow power supply wire and the black fan wire to the -5 volt power supply wire (check the color on your power supply). This will give your fan about a 40% boost in voltage and make it scream, but at the same time it will also shorten the life span of the fan due to the oncreased voltage. This is not recommended, but it does work for a while.
Are you sure about this ?? Only changing the connection from the mobo to the power source will give me more power in the fan ? How you explain that ?? The mobo has some kind of limitation of power to the fan, or even some kind of control because it knows the rpm of the fan ??
I think that the motherboard senses current through the third wire and extrapolates rpms from that. By doing what Sterling says you are just using the voltage difference to increase voltage and current to the fan, therefore speeding it up. Although I am pretty sure that that fan cant be rated for more than 2 watts, and dont think any motherboard will have trouble putting out .16 amps at 12 volts.
Hey jigsta: Go back up to the top of the thread and read my post again. I said connect to the +12 volt and the -5 volt which IN FACT gives you a 17 volt difference.
Stingray- I know it for a fact. I observed this very phenomena with my MoBo, using a 2-wire fan.
It stems from the fact that the MoBo only supplies X MA of current to that fan connector, and the fan has the capability to draw more than that if it is available. Kinda like a car with a low battery- the battery voltage may still be more than 10V or so, but because it has few AMPs of current left, your lights sure are "Brown" and dim.
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Howdy.
I had a play with some older brushless dc cooling fans.
Some of them have a halleffect sensor on the drum where the motor magnet is , it allows the little fan motor control IC to govern the speed of the fan about 3000 rpm or so.
If you take off the sensor you can fool the chip into thinking the fan has stalled so it cranks up the power to the drum and spins the crap out of it. Up to to 6000 rpm, but this can destroy it some times.
Had a problem with my Seada fan and looked through some of these solutions but that 60mm 20cfm fan still doesn't look as though it could blow off a match. It is to my understanding that 20cfm is quite an amount of air being drawn out from the heatsink but I don't get any of that "air gushing out feeling" when I put my hands over it (sucking air out of an Alpha PFH6035). I've used Cyrix fans before, a 25mm and another 40mm. The 25mm one runs pretty fast giving out a high pitched whine and moving lots of air, the 40mm one instead is very much similar to the Seada. I for one am a blur and don't quite know how a 20cfm fan should actually work but I've heard that YS Tech fans produce upto 26cfm and I'd bet that there's something amiss with my Seada.
Had a problem with my Seada fan and looked through some of these solutions but that 60mm 20cfm fan still doesn't look as though it could blow off a match. It is to my understanding that 20cfm is quite an amount of air being drawn out from the heatsink but I don't get any of that "air gushing out feeling" when I put my hands over it (sucking air out of an Alpha PFH6035). I've used Cyrix fans before, a 25mm and another 40mm. The 25mm one runs pretty fast giving out a high pitched whine and moving lots of air, the 40mm one instead is very much similar to the Seada. I for one am a blur and don't quite know how a 20cfm fan should actually work but I've heard that YS Tech fans produce upto 26cfm and I'd bet that there's something amiss with my Seada.
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