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8800GTX Fan Header

post #1 of 7
Thread Starter 
I just installed an HR-03 Plus on my 8800GTX and so far so good. Idle temps are down from 62C to 49C and load temps are down from 82C to 58C.

My question is if anyone has found a way to use the fan header on the graphics card for a 3 wire fan? I now have it wired to the PSU but would like to do away with the 12" of wire and run it to the header.

Thanks.
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post #2 of 7
You will have to do some surgery.

Acquire a mobo header connector and replace the fan's current power connector with it.

Ensure that you get the pinouts correctly, and verify that ratings are within tolerances.
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post #3 of 7
what syrillian said is correct if the fan is too powerfull for the header you could kill the mobo by trying to pull more than it can supply
post #4 of 7
Thread Starter 
Must not have explained this very well. I do not want to hook the fan up to a motherboard header, I want to hook it up to the fan header on the graphics card which is a 4 pin header that is completely different than a mobo header.

I will assume that it is 12v, ground, rpm, temp, since the fan speed on the stock cooler is controled by temp.
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post #5 of 7
Quote:
Originally Posted by Lancer33 View Post
Must not have explained this very well. I do not want to hook the fan up to a motherboard header, I want to hook it up to the fan header on the graphics card which is a 4 pin header that is completely different than a mobo header.

I will assume that it is 12v, ground, rpm, temp, since the fan speed on the stock cooler is controled by temp.
Ah...I see.

It is the same methodology, though I am uncertain about the temp sensor.

Speculative: You may have to run two lines: 1 for power/ground/rpm, and 1 for temp sensing, though I have not done this before as all temp readings were via software and sources were from the cards' IC.
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post #6 of 7
Thread Starter 
Yeah, I don't think I will smoke the GPU if I hook something up wrong so I guess I will just cut the plug off of the old stock cooler and see if I can with a Thermaltake smart fan to it since the TT is temp controlled.

Just thought maybe someone had been through this already.
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post #7 of 7
Quote:
Originally Posted by Lancer33 View Post
Yeah, I don't think I will smoke the GPU if I hook something up wrong so I guess I will just cut the plug off of the old stock cooler and see if I can with a Thermaltake smart fan to it since the TT is temp controlled.

Just thought maybe someone had been through this already.
This is a good question, and would make a valuable FAQ.

If you do find a definitive answer and have positive results, please post them for the future generations... and current people (like me...

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