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Author Topic: 2x5970 hardware  (Read 1475 times)
jibjabz
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June 13, 2011, 10:19:38 PM
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I've got 2 5970's on hand (lucky me). Would something like this rig work just swapping the 5850s for 5970s?


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SchizophrenicX
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June 13, 2011, 10:48:20 PM
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Well since this is here, could any 5970 experts help me with stable OC? I'm currently doing 850/300 @ 375 mhash/s, unable to find any stable combinations above 850 core clock. Trying to squeeze more mhash/s out of my 5970s as they are running only around 70 degrees. I believe theres still much OC potential in 'em.

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June 13, 2011, 11:17:28 PM
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What miner are you using?  And what params?

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June 13, 2011, 11:18:37 PM
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I've got 2 5970's on hand (lucky me). Would something like this rig work just swapping the 5850s for 5970s?


Mostly the problem is that PSU, as well as cooling.  With two 5970's you'll want a quality 850Watt PSU or better, with at least 70amps on the +12V rails.  If you put those two in right now and loaded it you'd easily exceed the 600 watts since the GPUs alone take 300 watts a piece and your computer has other parts in it.

jibjabz
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June 13, 2011, 11:30:49 PM
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Ok, so better power supply. I can figure that one out. What can I do on cooling?

As far as miner/parameters the plan is to do whatever maximizes Mhash/s.

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June 13, 2011, 11:35:23 PM
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Ok, so better power supply. I can figure that one out. What can I do on cooling?

As far as miner/parameters the plan is to do whatever maximizes Mhash/s.

I moved with a couple of 120mm fans to help pull air across the cards, made a huge difference and things are running well. As said above the PS is your real issue, especially f you OC since you can get them pulling quite more then stock.

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