Ok so my dad put in the fan just now while i was away and i noticed that the fan that came with my processor is 4 pin and not 3 pin like my current fan. so i see that on the motherboard it has a 4 pin slot that says CPU FAN and a 3 pin slot that says PWR FAN. he put it in the 3 pin PWR FAN slot. is this correct or is there something wrong. thanks for the help.
2007-11-01 10:29:57 · 2 answers · asked by le 2 in Computers & Internet ➔ Hardware ➔ Other - Hardware
this is the fan for my processor btw
2007-11-01 10:30:30 · update #1
The fourth pin is probably the fan speed control.
First there was two wires: voltage and ground, the power.
Then they added a third: speed sense, so the computer can know if the fan had failed.
Then they added the forth: speed control, so the motherboard could increase the speed of the fan as the CPU got hotter, making for a quieter system when its idle.
I've never seen an aftermarket fan that had the fourth wire. Some fans have internal temperature sensors so they regulate their own speed.
2007-11-01 10:38:21 · answer #1 · answered by Neebler 5 · 0⤊ 0⤋
That fan should connect to the cpu fan connector. Ignore the 4th pin which controls fan speed. In many motherboards, if no fan rpm is detected on the cpu fan connector, motherboard will just kick-in the auto shutdown safety feature that protects the processor. PC will not boot.
2007-11-01 17:56:20 · answer #2 · answered by Karz 7 · 0⤊ 0⤋