> Also, the blockchain might require terabytes after a decade.
Imagine saying "the blockchain might require gigabytes after a decade" in 2004. Here in 2014, you can get 64 GB on something the size of your smallest fingernail for $30-$40. Terabytes after a decade won't matter a bit.
I did have 10MBps and a while before that 100MBps just because of the campus network. Today in a residential area I have 22MBps down, 16 up (measured). However, that result might actually be capped by my wifi. I should have 60-100 MBps.
That said, I was thinking of it all, memory bus, disk r/w speed etc.
Imagine saying "the blockchain might require gigabytes after a decade" in 2004. Here in 2014, you can get 64 GB on something the size of your smallest fingernail for $30-$40. Terabytes after a decade won't matter a bit.