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is it possible?:) it wold be interesting, when given cheap chineese netbook and cheap chineese tablet, setup for example ubuntu to both of them, then le wild magic happens and viola - we have one mighty computer with more CPU cores, united RAM and video-card from the tablet:)

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You could build a cluster, but that's generally not going to be running any user-friendly interface –  ernie Mar 21 '13 at 16:43
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People make clusters out of cheap components all the time. See blog.afkham.org/2013/01/raspberry-pi-control-center.html –  Brad Patton Mar 21 '13 at 17:13

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Combining different independent computers is possible. The supercomputer Titan, e.g., is composed of 18,688 different nodes; each node has its own CPU, GPU and RAM.

The problem lies in the specific details of le wild magic. You need a distributed operating system (Titan uses UNICOS) and – as far as I know – there are no desktop versions.

But suppose you have a distributed OS in some popular Linux flavor and you actually combine the computing power of a netbook and a tablet. What have you gained?

Two slow CPUs won't be much faster than one for most tasks, since most actions you can perform with a netbook aren't very parallelizable. The system memory of each device will only be available to that CPU (making two 4 core CPUs very different from one 8 core CPU). You're also going to be able to use only one GPU for video output.

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No. If we could make computers twice as fast for just double the cost, we already would.

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Not really an answer for not really a question. –  Brad Patton Mar 21 '13 at 17:06
    
How is it not really an answer? –  David Schwartz Mar 21 '13 at 17:08
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I was going through the Low Quality review task which flagged this answer. I didn't think it should be deleted but felt compelled to comment. Seemed like a flippant comment rather than an answer to the question. –  Brad Patton Mar 21 '13 at 17:12
    
Added a "No", should qualify as an answer now :). –  terdon Mar 21 '13 at 17:12
    
@BradPatton: It is an accurate and precise answer. It explains what would be the case if the answer was "yes" and it's quite clear that's not the case. –  David Schwartz Mar 21 '13 at 17:14

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