1 - you said it as was it was current, it is not. 2 - still, in 2013 is not 1 server. It's also more than you said now ( add a tag engine server, elastic searc

1 - you said it as was it was current, it is not. 2 - still, in 2013 is not 1 server. It's also more than you said now ( add a tag engine server, elastic search, redis, load balancer) and an insane amount of memory on a lot of those servers. Even then, the stack exchange network is more than that. Saying 1 server, as you did, is not correct and it never was :)