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Tripple 6990s Minning Help Request
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Topic: Tripple 6990s Minning Help Request (Read 2340 times)
bbcoiner
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Tripple 6990s Minning Help Request
May 12, 2011, 12:44:06 AM
#1
Is it possible to mine with tripple 6990s? AMD drivers do not normally support tripple crossfire 6990s. Is there a way around this?
Thanks
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grue
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 12:45:02 AM
#2
If you're using windows, you can only use 4 cores. also, don't use crossfire, it actually degrades performance.
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clonedone
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 01:15:54 AM
#3
Quote from: grue on May 12, 2011, 12:45:02 AM
If you're using windows, you can only use 4 cores. also, don't use crossfire, it actually degrades performance.
crossfire is the only way to use two 6990s, if you dont, it wont work for some reason
TheShoura
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 01:25:20 AM
#4
Windows based OpenCL seems to bug out if you add more than 3 GPUs
That is, until you enable Crossfire. I enabled Crossfire and I got 4 GPUs to work. You _WILL_ have to enable Crossfire to get more than 4 GPU to work.
IDK if 6 will work.. rumor has it, 4 was the max. Give it a shot with Crossfire though. It does not degrade performance anymore. My 6870's do 260Mh/s each with or without crossfire.
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bbcoiner
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 01:37:46 AM
#5
Quote from: grue on May 12, 2011, 12:45:02 AM
If you're using windows, you can only use 4 cores. also, don't use crossfire, it actually degrades performance.
Is it possible under linux?
gusta
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 09:37:40 AM
#6
Linux supports upto 8 gpu
BitcoinRigs.com
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 04:15:11 PM
#7
Quote from: bbcoiner on May 12, 2011, 12:44:06 AM
Is it possible to mine with tripple 6990s? AMD drivers do not normally support tripple crossfire 6990s. Is there a way around this?
Thanks
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EPiSKiNG
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 05:15:49 PM
#8
Quote from: BitcoinRigs.com on May 12, 2011, 04:15:11 PM
Quote from: bbcoiner on May 12, 2011, 12:44:06 AM
Is it possible to mine with tripple 6990s? AMD drivers do not normally support tripple crossfire 6990s. Is there a way around this?
Thanks
Ubuntu 10.10, Catalyst 11.5, SDK 2.4. Like this:
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bitcoindaddy
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 06:17:06 PM
#9
What are you going to use for a power supply? Three cards will take about 1200 Watts, then add more for the CPU, memory, etc.
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Re: Tripple 6990s Minning Help Request
May 12, 2011, 07:06:21 PM
#10
I been having trouble with one of my 6990s. I can only see three of the GPUs. I have crossed fired, etc. It keeps on saying to dual connect crossfire, but there is only one crossfire slots on each of the cards.
I have tried a bunch of stuff.
Running Win 7 64 bit, with catalyst 11.4 and Latest SDK.
Part of me wants to RMA it, but with coin prices so high, its tough to send it back. even with three GPUs, its running about 1.1 Ghash at 841 MHZ.
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Re: Tripple 6990s Minning Help Request
May 13, 2011, 07:37:00 AM
#11
Quote from: c-rock on May 12, 2011, 07:06:21 PM
I been having trouble with one of my 6990s. I can only see three of the GPUs. I have crossed fired, etc. It keeps on saying to dual connect crossfire, but there is only one crossfire slots on each of the cards.
I have tried a bunch of stuff.
Running Win 7 64 bit, with catalyst 11.4 and Latest SDK.
Part of me wants to RMA it, but with coin prices so high, its tough to send it back. even with three GPUs, its running about 1.1 Ghash at 841 MHZ.
Did you put dummy plug on each card?
If you would like to send me a tip: 1HVGGWGWgHkyh9K8sntkZmXoiopX8Bsvv8
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ALWAYS gpg ident the person you're about to exchange with!
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