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Author Topic: How much does performance drop by when using more than 1 graphics card?  (Read 495 times)
TGJJ
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July 25, 2012, 02:25:56 PM
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I was thinking of setting up my own mining rig using 3 graphics cards. How much should I expect the performance of each card to drop by when using them together? Thanks!

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runlinux
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July 25, 2012, 02:41:08 PM
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There is virtually no performance drop.

I have 4 cards i a single rig and no drop that I can see.

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July 25, 2012, 02:47:09 PM
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It doesn't ... I have 3 cards in 1 machine - added over time. It generates more heat; but, I haven't seen any drop in performance.

But, since you are a newbie, I hope you are not buying those cards for mining purposes. I don't know where the product is at (haven't been following it), but, there's suppose to be a product out that'll blow GPU mining off. Search BFL on this forum ... or go to  http://www.butterflylabs.com/products/
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July 25, 2012, 02:49:58 PM
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I recall having 8xGPU boxes and each of them were performing at 100% capacity. Though in practice sometimes it makes sense to overclock GPU's a lil bit less when there are many of them for a given power and cooling scheme.

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TGJJ
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July 25, 2012, 03:21:37 PM
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It doesn't ... I have 3 cards in 1 machine - added over time. It generates more heat; but, I haven't seen any drop in performance.

But, since you are a newbie, I hope you are not buying those cards for mining purposes. I don't know where the product is at (haven't been following it), but, there's suppose to be a product out that'll blow GPU mining off. Search BFL on this forum ... or go to  http://www.butterflylabs.com/products/


When is the release date, and those numbers seem a bit good to be true? Also would it not be possible to earn back the cost of the machine in the time before release? Any advice would be greatly appreciated.

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