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gtx260 and spdif audio w/ hdmi

post #1 of 10
Thread Starter 
I have been searching for about an hour and can't seem to find anything, I am just more confused at the moment. So here is my problem - I got a BFG GTX260 paired with a BIOSTAR A770E3 motherboard. Everything works great except I am trying to find the correct cable to connect the audio from my spdif output on the motherboard to the gtx260.

The motherboard has a 3pin connector - which can I am guessing goes to the spdif header (bolts to one of the slots in the case for external audio). (the three pins are labeled - left channel - ground - right channel according to the biostar manual, very poor manual.)

The GTX260 has a 2pin connecter. (guessing one is sound and the other is a ground).

Is there anyway to connect the video card directly to the 3pin connector on the m/b or do I have to run it through the external. If I run it through the audio header, then which cable would I need to connect that to the gtx260.

This is the audio header I am speaking of !B0FY(N!!Wk~$(KGrHqF,!g8Ew5G0+mC,BMY)WKVv3!~~_12.JPG

What I am trying to do is connect to a 32" Sanyo HDTV via the hdmi. Trying to do both audio and video through the hdmi cable.
Edited by vipergtrdj - 5/19/11 at 11:30am
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post #2 of 10
I think you want [ame="http://www.amazon.com/Cables-Unlimited-Audio-cable-digital/dp/B0028AZ0R8/ref=sr_1_8?s=electronics&ie=UTF8&qid=1305847866&sr=1-8"]this cable[/ame].
    
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post #3 of 10
Thread Starter 
ok, so do i only need to hook the spdif cable to only one channel ? I am a little confused since my m/b manual says that the pinouts for it are

left channel - ground - right channel
Edited by vipergtrdj - 5/19/11 at 5:58pm
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post #4 of 10
I'm guessing your bought the card used. If so download your cards user manual and see what cable came with it new and buy that cable. The cable should look like the cable in the amazon link.
    
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post #5 of 10
So the confusion stems from the card having a two-pin header, and the board a three-pin, correct?

This three-pin header on the board you're looking at is the wrong one, because a digital connection is never going to have a left/right/ground (this is indicative of analog), it's going to have a sound/ground (2 pin) setup.

You have to reckon which two pins are the digital (spdif) out coming off the motherboard. I dunno how you find that, but that's what you need to find, and then you need to hook it up to the card w/a 2-wire cable.
    
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post #6 of 10
Quote:
Originally Posted by brettjv;13571107 
So the confusion stems from the card having a two-pin header, and the board a three-pin, correct?

This three-pin header on the board you're looking at is the wrong one, because a digital connection is never going to have a left/right/ground (this is indicative of analog), it's going to have a sound/ground (2 pin) setup.

You have to reckon which two pins are the digital (spdif) out coming off the motherboard. I dunno how you find that, but that's what you need to find, and then you need to hook it up to the card w/a 2-wire cable.

His motherboards manual should have that information.
    
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post #7 of 10
Thread Starter 
Quote:
Originally Posted by xmod;13571380 
His motherboards manual should have that information.

Yes, I purchased the gtx260 used so I have only the card, and It appears this board does not have one, is that common for a AM3 board to not have a spdif out ?
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post #8 of 10
Quote:
Originally Posted by vipergtrdj;13572754 
Yes, I purchased the gtx260 used so I have only the card, and It appears this board does not have one, is that common for a AM3 board to not have a spdif out ?

I don't know if its common or uncommon but cheaper motherboards tend to have less features (my AM3 mb has it).

You could always sell your gtx260 and buy a gtx460; the gtx460 (and 450 also I think) has sound card hardware on the video card itself so no need to fiddle with an sdif cable. Just plug in the hdmi cable and you get video and sound.

Btw, if you choose to go this route, as far as computing power goes:

gtx 460 > gtx 260 > gts 450

900gflops > 800gflops > 700gflops
    
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post #9 of 10
I just looked at my mb manual and your mb manual and my mb spdif connector is arranged similar to yours.

I'll be honest, I've never had to use a spdif cable to enable sound for hdmi because my video cards have always had sound hardware on the cards themselves.

There's a few threads on spdif audio cables on OCN.... find those threads (use search) and PM people in those threads for more info, they'll be able to give you a better heads up.
    
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post #10 of 10
Thread Starter 
alrighty, thanks for the information on the cards. I had just read that they implemented the hardware audio into the 4xx series. I think I may go this route, seems like less of the hassle and all.
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