How much does performance drop by when using more than 1 graphics card?

TGJJ

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Quote from: gochk on July 25, 2012, 09:47:09 AM

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.

Vladimir

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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.

gochk

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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/

runlinux

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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.

TGJJ

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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!

Topic: How much does performance drop by when using more than 1 graphics card? (Read 559 times)