Possible wiring of 4 pin fan/heatsink to Dell (proprietary 5 pin) motherboard po

Hi there, I have an older Dell Dimension 8400 3ghz Pentium 4 desktop. As with many youtube videos I have seen, the fan makes an unbearable amount of noise 75% of the time. However, the heatsink pipes and fins are cold when this is happening which suggests to me that there is no problem with overheating.

So far I have replaced the heatsink paste (with no resultant change) and I have now purchased an Arctic Freezer Xtreme Rev 2, which I thought would reduce the noise even if the fan is going for it.

However I made sure of the socket size (775) before purchase but I didn't think about the connection to the motherboard. I now face the problem of the 4 pin fan not being compatible with the 5 pin motherboard port.

I was thinking about cutting the connector off the Arctic and wiring the 4 Arctic wires to the connector of the old fan. Is this possible in terms of wire purposes and voltages etc, if so how do the wires match up?

The Arctic wires are black/red/yellow/blue
The dell Blue/Black/Red/White

Many thanks

You really need the Dell fan and connector for this to work properly. Otherwise, you will get fan errors every time you start the system and you may end up with system overheating.

Go to these guys : www.txcesssurplus.com and get a new fan. Here is the direct link:

http://www.txcesssurplus.com/servl [...] Fan/Detail

You definitely CAN NOT use a standard 775 heatsink/fan on these systems. Been there, done that, got a headache trying to make it work.

Fans tend to wear out and generate more noise with age. A newer, less used fan should be quieter. Also, ensure that the heatsink is clean, along with the rest of your system as well. Less heat due to air restrictions and dirt/dust build-up (including blowing out the PSU) will help your rig run cooler and quieter.