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Zalman cooler-ATI 9800XT-QS DP 1.0Ghz
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Help!
I've got an ATI 9800XT graphics card installed in my QS DP 1.0ghz Mac (it is modded to run 4x AGP with two pieces of tape over pins 3/11). I just installed a Zalman VF900cu VGA cooler on the card... almost.
I didn't have any problems until it came time to install the power cables. This cooler has a fan controller that pig tails into it, allowing you to adjust the speed of the fan. The problem is the connection doesn't allow the power cord to plug into the power connector on the VGA card. It must be plugged into the fan header power connection on the motherboard....
Is this making sense? The problem is of course that there is only ONE fan power connection on a QS DP 1.0 motherboard... for the CPU fan. Unlike PCs, Apple didn't put any additional fan power connections on the board (that I could find).
Can I splice the CPU fan and the VGA fan wires together? I'm hesitant to do that as neither fan would probably get enough power. I don't want to run the CPU without its fan either...
Does anyone have a suggestion? There has to be a way to make this work...
Thanks,
Alan
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Senior User
Join Date: Sep 2002
Location: Canastota, New York
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Offline
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You can splice the fan connector from the motherboard, or get/make a connector that converts a 4pin hard drive connector into a fan connector.
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Well, the splicing didn't work for some reason. So I'll try to get new connectors in tomorrow. The CPU fan isn't running, but I put in one of those double-slot exhaust fans for the moment. Coupled with the Zalman, it is moving a lot of air through the box... so hopefully the CPU will be okay.
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Is it safe to run the QS without the CPU fan while I'm searching for the adapter to get the 3 pin fan coverted to a 4 pin molex connector (I'm in a small town and it might take some searching? The fan's connector/wiring got destroyed in my failed attempt to splice it... so I pulled it out of the loop for the time being.
I believe that the QS DP 1.0 came in two versions... one without a fan. The fan doesn't really pull that much air to begin with... and the auxillary fan I put in seems to be moving air. I just don't know if it is enough.
Thanks
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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Offline
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Run the processor without a fan? I'd think not.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Originally Posted by Big Mac 
Run the processor without a fan? I'd think not.
Okay... point taken. But I do have another fan running. The auxillary fan I installed is a lot bigger than the stock one... and moves a lot more air. It just isn't located in the same place (between the heatsink and the vent holes). I'd say that there is more air moving through the whole box than was with just the CPU fan.
I wish there was an aftermarket company making CPU fans for the Mac system. I'd really like to get a better one for the CPU. I'll be re-wiring it today (and just running off of my PC for a while).
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