3 pin to 4 pin fan

[th3Godfather]

I read somewhere that connecting high cfm fans directly to the motherboard is a good way to mess things up. i just bought a thermaltake smart fan II, now would you recommend i go out and buy a 3 to 4 pin adapter and a 3 pin y adapter (so i can have it monitored by my mobo and powered by my psu) or is this all uncessary?

 

[Buz2b]

I would definately not run it off of the MB. At high rpms it will draw quite a bit of current. As far as going to the trouble of getting another adaptor so that you can monitor it, well that's up to you. Not necessary though. Just monitor the temps and they tell you all you need to know. That fan has two options; fan control by the sensor or manual control. I'd run it by manual control and "dial it in" watching the temps until a sweet spot is obtained. If you want to run it by sensor control, placement of the sensor is critical. Do some reading on this.

 

[th3Godfather]

the main reason of monitoring the fan is so if my fan dies my system will automatically shut off and not cause the chip to melt if i'm away or asleep. i was planning on running it full blast all the time so i guess i'll get the splitter and 3 to 4 pin adapter. thanks for the reply

 

[Buz2b]

Just a heads up, the fan speed (or lack of it) will not shut off the system to keep the cpu from frying. If your board has it, the cpu internal temp (as read by the MB) would do that; meaning if the fan shut down (monitored or not), the system would shut off as soon as the temp reached the critical point. The only exception to this that I know of is some boards will not boot if they don't detect a cpu fan speed but that is much different from cpu protection from a failed fan.
Anyway, just an FYI for ya!

 

[th3Godfather]

thanks for the info, in that case i guess i'll only have to buy the 3 to 4 pin adapter to power this sucker up