i feel so stupid asking this
- Thread starter cloud17
- Start date
donkey42
plank
they are most likely powered by the PSU and using a molex connector but that is not a bad thing as there will probaly be another molex connector provided by the fan
BTW: it looks like this
although the colour of the connector may vary[ot]don't feel stupid, everyone has to learn, i've being here @ HWF for over a year & i forget more than i remember[/ot]
BTW: it looks like this
although the colour of the connector may vary[ot]don't feel stupid, everyone has to learn, i've being here @ HWF for over a year & i forget more than i remember[/ot]
Kastang
Spot-on advice...I've never bought a controller (I think they take up a 5.25" bay, unless built-in) -
Do you set the temperature and the fan takes care? Or is it purely monitoring the processor temp (via some Mbd monitor routine?) ...and you have to set the fan speed. In other words - do I have to keep checking, or will it automaticaly speed up as necessary?
Fan technophobes:
I bought a 12v 120mm Dia fan and it works ok, taking about 1/3rd the current they claim....but what's the third (yellow) wire for?
The supply is red+, black- (or strictly 0v) and I powered it from a 12v battery, just to check the current consumption.
...It's a Nildec and searching their website has revealed these fans will operate over a minimum 2:1 voltage ratio (so a linear regulator should be OK for dropping fan-speed, well I was going to PWM)...and this third wire is a tachometer output - presumably to monitor that the fan is still going!
...By counting the pulses it would be possible to determine the fan-speed, although this is not important - only the sound/noise is really at issue....v. heat reduction of course.
I've noticed some other fans with this third-wire, so maybe some field-testing is needed!
I note that some new 600w PSU's have a fan over-run feature (when you power down with the mains still present!), the idea being that this reduces processor temperature (and other bits like HDD's) by giving them a further blast....doesn't say how long, but I guess 5mins would be a great help for increasing MTBF/reliability. Cars continue to cool the rad after stopping, so why not PC's?
Spot-on advice...I've never bought a controller (I think they take up a 5.25" bay, unless built-in) -
Do you set the temperature and the fan takes care? Or is it purely monitoring the processor temp (via some Mbd monitor routine?) ...and you have to set the fan speed. In other words - do I have to keep checking, or will it automaticaly speed up as necessary?
Fan technophobes:
I bought a 12v 120mm Dia fan and it works ok, taking about 1/3rd the current they claim....but what's the third (yellow) wire for?
The supply is red+, black- (or strictly 0v) and I powered it from a 12v battery, just to check the current consumption.
...It's a Nildec and searching their website has revealed these fans will operate over a minimum 2:1 voltage ratio (so a linear regulator should be OK for dropping fan-speed, well I was going to PWM)...and this third wire is a tachometer output - presumably to monitor that the fan is still going!
...By counting the pulses it would be possible to determine the fan-speed, although this is not important - only the sound/noise is really at issue....v. heat reduction of course.
I've noticed some other fans with this third-wire, so maybe some field-testing is needed!
I note that some new 600w PSU's have a fan over-run feature (when you power down with the mains still present!), the idea being that this reduces processor temperature (and other bits like HDD's) by giving them a further blast....doesn't say how long, but I guess 5mins would be a great help for increasing MTBF/reliability. Cars continue to cool the rad after stopping, so why not PC's?
HIya,
From waht I understand the 3rd yellow wire is there to be connected to the mobo fan sensor, normally it has the ususal 3 pin fan connector plug connected to it to plug it in to the mobo fan connector, though the yellow wire is the only one that connects to the mobo, with the power for the fan then being provided via a molex connector. and it works by counting the revolutions of the magnets used to drive the fan, at least this is my very limited and basic understanding of it.....I'm something of a novice and am on a pretty steep learning curve at the moment, so if anyone can give a more detailed explanation, this owuld really help.....
From waht I understand the 3rd yellow wire is there to be connected to the mobo fan sensor, normally it has the ususal 3 pin fan connector plug connected to it to plug it in to the mobo fan connector, though the yellow wire is the only one that connects to the mobo, with the power for the fan then being provided via a molex connector. and it works by counting the revolutions of the magnets used to drive the fan, at least this is my very limited and basic understanding of it.....I'm something of a novice and am on a pretty steep learning curve at the moment, so if anyone can give a more detailed explanation, this owuld really help.....