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Bitcoin Forum > Bitcoin > Mining > Donation for your help, How do I mine with more than 1 GPU with GUI miner?
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Author Topic: Donation for your help, How do I mine with more than 1 GPU with GUI miner?  (Read 1227 times)
tachi641 (OP)
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May 28, 2011, 05:44:17 AM
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Hi Folks,

I just bought a MSI Motherboard with 5 PCIe slots, but it looks like you can only fit 4 cards on the board, so I have decided to go with 4, 6950 which I have all installed correctly on the board.

However, windows and my GUI miner is only picking up the 1 card that my monitor is plugged into. Also I am running Windows 7 Ultimate 32bit,

Please help.

Thanks!
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d3c0n808
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May 28, 2011, 05:46:50 AM
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You need a dummy plug for each video card or the drivers won't recognize a card is there.  There are some youtube videos on how to make dummy plugs and some site that sell them basically you need some resistors and a digital to vga adapter  or you can use linux and you wont need the dummy plugs...
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May 28, 2011, 05:47:56 AM
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If you only have 1 monitor, you probably need to buy some dummy plugs, or a workaround MAY be, start mining on your first card, plug the monitor into the second, start mining on that, rinse and repeat Smiley
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May 28, 2011, 05:48:31 AM
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Quote from: d3c0n808 on May 28, 2011, 05:46:50 AM
You need a dummy plug for each video card or the drivers won't recognize a card is there.  There are some youtube videos on how to make dummy plugs and some site that sell them basically you need some resistors and a digital to vga adapter  or you can use linux and you wont need the dummy plugs...

Thank you for your help! If I use a dummy plug would I need to use the cross fire link?
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May 28, 2011, 05:50:36 AM
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Quote from: tachi641 on May 28, 2011, 05:48:31 AM
Quote from: d3c0n808 on May 28, 2011, 05:46:50 AM
You need a dummy plug for each video card or the drivers won't recognize a card is there.  There are some youtube videos on how to make dummy plugs and some site that sell them basically you need some resistors and a digital to vga adapter  or you can use linux and you wont need the dummy plugs...

Thank you for your help! If I use a dummy plug would I need to use the cross fire link?

Oh, that might be why, disable crossfire and see if you can mine with them all.
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May 28, 2011, 05:52:40 AM
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No if you have a dummy plug you dont need crossfire link.  Disable crossfire, install your plugs and enjoy mining
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