Have you seen what the open compute project and Intel came up with around silicon photonics ?:
And how some of the Open Stack solutions, like Nebula One, are being marketed ?
Just remove failed hardware and add new hardware as needed everything else is handled automatically and dynamically.
Certain tasks are now moving from the PC to mobile and the cloud.
People are already developing applications running GPU-intense tasks 'in the cloud' and streaming the output to a client device.
However I do think when mobile devices are capable enough they will eventually be the new PC and certain tasks will be moved from 'the cloud' to mobile client devices.
It probably is just a matter of time.
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