Well... Monolith makes 900 of each resource. Lets say you have 10 monoliths, so 9000 of each. Now, you have two options: Planet Robotoid III and 2 Monoliths, or one of each of the planet single resource increasers. The first option gives 1800 more of each resource base production, or 10800. 30% increase gives 14040. So it is a 56% increase to production. The second option gives only a 45% increase to production.
Now lets say you have 15 Monoliths. 13500 base production. 2 more and a robotoid provides 19890, a 47% increase in resources. 3 separate resource enhancers still provide only provide 45%. So with 18 facilities, it is better to have 17 Monoliths and a Robotoid.
Now lets look at 17 Monoliths. They make 15300. 2 more and a robotoid provide 22230, a 45.29% increase. So with 20 facilities, it is better to have 19 monoliths and a robotoid.
21 facilities is where it becomes better to have the 3 resource enhancers than the robotoid. 20 Monolith + Robotoid = 23400. 18 Monolith + 3 enhancers = 23490.
Now, if you have an all minerals planet, it is definitely better to have a Mineral Scanner than a Robotoid at much lower facility numbers, since they both take just 1 facility slot.
Note: all figures are of each resource type. Since 3 is a factor of both the base resource production and the figures after adding more facilities, it drops out and does not make a difference.
[ February 05, 2004, 06:50: Message edited by: Imperator Fyron ]