I am using a P4 1800 with 256 Mb Rambus RD ram. Computer turns for the other 30 players starts to slow down after ~ 1AD but since I am used to playing multi-player board strategy games and the like, the computer is still faster than humans. When I am at war though, it may take me ~ an hour to make my moves in attacks and complicated trading with 30 other nations in a turn. The computer opponents don't seem to complain though. I just finished a (31 player, 240 X 180 60% water world, research level set to 500, corruption level set for normal "large" map game in 1790 AD with a cultural victory as Greece. There were 2 large continents. I had conquered mine and had 100 tanks, 6 armies, 12 cavalry, and 50 infantry on the other continent aiming for a conquest victory. By this time I had 59% population and 38% area. Total game time was 111 hours. It was worth the wait. BTW, I went to and stayed in Fascism as did the other major warring powers. For the cities not near my homeland, I could force build a tank for 5 people every time the population hit 12.