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ninjapug
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June 10, 2011, 01:49:31 AM
 #1

Can i put 3 or more HD 6970 on windows 7. As i understand 6970 has to GPU each and Windows only allow 4 GPUs to run. Correct me if im wrong.

Or should i get HD 5870 instead
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swusc2
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June 10, 2011, 02:00:29 AM
 #2

Some people have managed it but its kind of arbitrary. If your staying with Windows 7 a good rule of thumb is unless you know your motherboard can explicitly support it and you have the time or the experience modding conf files. 4 is probably the max GPU for Windows 7.

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xaxistech
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June 10, 2011, 02:05:45 AM
 #3

WRONG!
You can only use 4 GPU's for 3d rendering as that is all current drivers allow for.

BUT!

As like F@H, cryptology can be done with multiple GPU's, as it uses its cores NOT the GPU itself as a collective.

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HACKEN

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Hero/Legendary
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HACKEN            
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.DEDICATED CRYPTO
swusc2
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June 10, 2011, 02:15:40 AM
 #4

WRONG!
You can only use 4 GPU's for 3d rendering as that is all current drivers allow for.

BUT!

As like F@H, cryptology can be done with multiple GPU's, as it uses its cores NOT the GPU itself as a collective.

Technically true the FAH clients lets up to 8 GPUs run but there is software mod or something. What happens when you try to load 5+ GPUs in Windows 7 with pocblm it doesn't load drivers for any card after the 4th GPU and when you assign device=4+ it doesn't recognized it. Core-wise I'm not so sure if Windows recognizes dual-GPU cards as 2 GPUs or 1 GPU. This is from personal experience with 5x5870 so other people might have had better luck.

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xaxistech
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June 10, 2011, 02:18:28 AM
 #5

WRONG!
You can only use 4 GPU's for 3d rendering as that is all current drivers allow for.

BUT!

As like F@H, cryptology can be done with multiple GPU's, as it uses its cores NOT the GPU itself as a collective.

Technically true the FAH clients lets up to 8 GPUs run but there is software mod or something. What happens when you try to load 5+ GPUs in Windows 7 with pocblm it doesn't load drivers for any card after the 4th GPU and when you assign device=4+ it doesn't recognized it. Core-wise I'm not so sure if Windows recognizes dual-GPU cards as 2 GPUs or 1 GPU. This is from personal experience with 5x5870 so other people might have had better luck.

Again, I said that in theory. Honestly, you will run into scaling problems. When you run <3 GPU's on a single computer, you are losing performance.
2x the same GPU does NOT equal 2x the performance

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HACKEN

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Hero/Legendary
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HACKEN            
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.DEDICATED CRYPTO
kokojie
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June 10, 2011, 02:27:02 AM
 #6

isn't 6970 single GPU??? 6990 is dual GPU

btc: 15sFnThw58hiGHYXyUAasgfauifTEB1ZF6
xaxistech
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June 10, 2011, 02:53:57 AM
 #7

isn't 6970 single GPU??? 6990 is dual GPU

Yes, but you can run multiple cards on one motherboard... lol

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HACKEN

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Hero/Legendary
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HACKEN            
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.DEDICATED CRYPTO
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