1mbit upstream = 6 players, 10 mbit upstream = up to around 24 players, for 64 players server you'd need a 100mbit upstream. Of course it depends on how much AI you have in the game. But let's say that a 10mbit connection is enough.
As for the hardware, 6 year old hardware may do it (with 2-4Gb ram)

Thanks. My connection will not be good enough then.

I'm in the US however, so European people would probably lag.



... as shown here

EDIT: 7 pm UTC should be about 2 PM where I live.

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Ozymandias, King of kings, God of Caves, Wizard.

Hey Ozy,

you could host the next session, it wouldn't hurt if someone from the US is the host anyway, this game is international and everyone should be able to benefit from a good ping
We could start 2 hours later too.
You should get sure that your bandwidth is steady during the session (no other person behind the router who may disturb the bandwidth).