System Overheating information:

  23790954 11:58 04 Aug 07
Locked

Hi! there,
As a silver surfer, I use a system which I built myself, using a Gigabyte GA-K8N-SLI motherboard supported by an AMD 64 3800+ processor and 1.5 mb
DDR 400 memory. Having posted 2 previous requests on this help page for advice on my system which always shows a high temperature, and NOT being able to diagnose the problem, I need further information on what I think may be the trouble. You will appreciated that I am elderly, and NOT a whiz kid, so this explanation might sound a bit silly to you computer specialists. I have 1 x fan (CPU) connected to the CPU fan connector. I have 1 80mm fan connected to the system fan connector. I have 2 60mm fans connected to the power supply unit connectors. All these fans are fitted with the makers label, on centre of fan, vizible on inside of case. HOWEVER here comes the query:
Having perused the motherboard manual closely I now find that there is a connector called the Power Fan Connector, out of sight near the memory/IDE slots, which has NOTHING attached to it. The motherboard manual states the following: PLEASE REMEMBER TO CONNECT THE POWER TO THE COOLER TO PREVENT THE SYSTEM OVERHEATING:
Exactly what should be attached to this connector. All help and advice in this matter would be very much appreciated. Many thanks.

  Belatucadrus 12:31 04 Aug 07

I'm not sure about the "Power Fan Connector" as it would appear that you have sufficient fans installed already, what I would suggest you do is check the orientation of the fans, they should have an arrow on the side showing air flow direction. Your comments about the labels would seem to indicate they're all flowing the same way, general rule of thumb is that there should be an intake fan positioned low on the front face of the case pulling in cool air and an extractor high on the back sucking out the hot. Thus creating a constant air flow over the MOBO. If they're all on suck or blow, they're probably fighting each other and disrupting air flow rather than helping.

  Totally-braindead 13:11 04 Aug 07

I have to agree with Belatucadrus it does sound to me as if all the fans are operating the same way, hes right in what he says, it should be in at the front and out at the back, this is because its the flow of air across the components that cool the system. Use a bit of toilet tissue to see what the fans are doing and if necessary reverse them.
Regarding the system fan connector, I presume your fans are always on full belt as they are connected via a molex connector(the same type of connector that powers your hard drives and cdroms). The system power connector is a different way of powering a fan, you need a fan with this type of power connection rather than a molex. The advantage is the motherboard will decide, depending on how hot the computer is, how fast the fan needs to go and will adjust it accordingly. Usually its the rear fan you connect to this, I don't think you can connect more than one fan to it as I don't think it provides enough power. The advantage of this is it tends to be quieter as the system will slow the fan down when its not needed to run full speed.
Theres nothing wrong with using the standard molex ones, you don't have to use the system fan one but I srongly suspect that some of your fans are the wrong way round and this will definatly cause overheating.
Remember, in at the front and out at the back so the air flows from front to back.

  Stuartli 13:24 04 Aug 07

Also seal off any case side vents (Sellotape is the easiest method) to ensure that the air flow is at its maximum.

These may assist:

click here

click here

  23790954 13:51 04 Aug 07

Many thanks Belatucadrus, Totally-braindead and Stuartli. Have taken your advice and will attempt to rectify problem. Thanks also Stuartli for website information, which I have printed off for future reference, as I do like to keep such information.

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