Last year, a company named Nectome, "advetised" a service for backing up & (eventually) digitizing people's brains which was going to be 100%-fatal. They retracted saying it wasn't correct they expected to revive a whole consciousness from the connectome buff.ly/2YT1Eaq
The actual computational requirements for running an uploaded human mind are very difficult to quantify & strongly depend on the chosen level of simulation model scale. In other words, if you want a very precise copy, you need a ginormous processing power buff.ly/2G0UCYG 
There is, however, a different approach to mind uploading that uses a completely different set of technologies: mind virtualisation, i.e. extracting a number of characteristics from a mind to develop a model that can be used to simulate future behaviour buff.ly/2KdpXg4
In 2015, a digital imitation of circuitry in a sandgrain-sized chunk of rat brain was realized. The work modeled some 31,000 virtual brain cells connected by roughly 37 million synapses ow.ly/Hmy230olJlN
In 2013, the European Union funded the Human Brain Project, led by Henry Markram, to the tune of $1.3 billion. Markram claimed that the project would create a simulation of the entire human brain on a supercomputer within a decade buff.ly/2uP5e7s
You can find an interesting collection of articles looking at both technology aspects and to social ethical questions of mind uploading and mind virualization at minduploading.org
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