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Does anybody compared mining on 1 GPU and 2 GPUs?
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Topic: Does anybody compared mining on 1 GPU and 2 GPUs? (Read 610 times)
darklord
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Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 04:53:01 PM
#1
Like in subject... Can anybody share any numbers? Does 2 GPUs really increase mining by x2?
coinspoolco
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 04:59:38 PM
#2
Yeah sure it does increase by 2x. The cgminer uses 100% of both card, not like games where you can see only a small % of increase with additional cards.
mastero9017
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 05:01:01 PM
#3
Quote from: darklord on December 27, 2013, 04:53:01 PM
Like in subject... Can anybody share any numbers? Does 2 GPUs really increase mining by x2?
Yes, also with cudaminer.
batoelrob
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 05:15:31 PM
#4
I cross-fired two different cards, one gives 650 KH and the other 400KH, functionates good.
cgayle
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 05:18:06 PM
#5
Most probably, the estimated gpu performance will be achieved with any number of gpus you add.
You need to take care to power it proerply with proper psu and cables.
superresistant
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 05:24:15 PM
#6
Well, not exactly.
First you need exactly the same GPU (brand) to compare.
Then, depending on the excess of heat due to a bad position in the RIG, the GPU with less air flow could be badly cooled causing a slower hash rate.
Jaerky
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 06:16:22 PM
#7
I wanted to try that out, but my case is too small. Especially since I just installed a GTX 670. I bought that before I ever knew about the hashrates as it replaced my Radeon 7850.
Is it worth it to get 2 cards? Do they double the efficiency of mining? I'm thinking about getting a new rig just for mining. Not sure if I should invest the money now or wait for the new specialized mining machines coming out for the Scrypt coins.
bojecht
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 27, 2013, 06:35:44 PM
#8
Quote from: batoelrob on December 27, 2013, 05:15:31 PM
I cross-fired two different cards, one gives 650 KH and the other 400KH, functionates good.
Do not put them in crossfire, it is slowing them down
infinitybo
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Re: Does anybody compared mining on 1 GPU and 2 GPUs?
December 28, 2013, 02:24:46 PM
#9
@Darklord It's a nice question however it does increase by two.
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