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Title: Windows Multiple GPU Post by: Jarredm on June 14, 2011, 06:57:17 PM So I am having trouble getting two GPUs running in windows. I am wondering if there is a secret! ;)
I have a 6870 that is installed and running with poclbm with guiminer. I also have a 4870 card in the board's second x16 slot. The device manager see the card and correctly identifies it. However, when I run poclbm in command line mode I only see [0-0] Barts as well as the CPU. I have also noticed that there is no mention of the 4870 card in CCC. I believe that I'm missing something basic since this is my first attempt at multiple GPUs on a mobo. Title: Re: Windows Multiple GPU Post by: saadtariq30 on June 14, 2011, 07:10:06 PM connect a monitor or a dummy plug to your 4870..without that CCC wont load it up
Title: Re: Windows Multiple GPU Post by: Jarredm on June 14, 2011, 08:14:25 PM connect a monitor or a dummy plug to your 4870..without that CCC wont load it up Ah! Now all those dongles on the GPUs in the pictures here make sense! I have seen pictures of a jumper wire between two pins on a DB15 VGA connector/adapter. I assume that this takes care of the presence detection for the card? Can someone fill me in on what pins to jump? Title: Re: Windows Multiple GPU Post by: saadtariq30 on June 14, 2011, 08:58:55 PM THOSE ARE NOT JUMPER WIRES!!! They are RESISTORS!
here you go: http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html Title: Re: Windows Multiple GPU Post by: Jarredm on June 14, 2011, 09:18:37 PM THOSE ARE NOT JUMPER WIRES!!! They are RESISTORS! here you go: http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html Thank you so much! You have saved me ruining a card! Send me your address and I'll drop you a bit of gratuity. I'll check out that link and see if good'ol radioshack has the correct resistance size. Title: Re: Windows Multiple GPU Post by: saadtariq30 on June 15, 2011, 03:55:40 AM No prob :) pm me whenever you need any help.
Title: Re: Windows Multiple GPU Post by: stellan0r on June 15, 2011, 11:35:36 AM ---> http://forum.bitcoin.org/index.php?topic=16816.0 :-)
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