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Author Topic: How much does performance drop by when using more than 1 graphics card?  (Read 527 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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Creating a Bitcoin client that fully implements the network protocol is extremely difficult. Bitcoin Core and some of its derivatives are the only known safe implementations of full nodes. Some other projects attempt to compete, but it is not recommended to use such software for anything serious. (Lightweight clients like Electrum and MultiBit are OK.)
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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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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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