Just talked to a guy who codes microcontrolers in assembler. He wants to use a raspberry pi as an interface device between TCP and Serial port. He asked me how fast that would run over internet and I told him that it depends on the connection an other things it takes at least some milli secs to transmit.
He is like:
What the fuck do you mean milli secs?
I poll data on my 20 mhz controler every like micro sec or so and that Pi got 1Ghz.

Me like: Yea go fucking code that shit on your own with ASM.