alt Hacker NewsIf orbital compute fails, it won't be due to heat issues. Current radiators are around 8kg per square meter, and each square meter can radiate close to 1kW. So a 1 megawatt satellite would need less than 40 square meters of radiators weighing around 300kg. And that assumes there won't be any improvements in radiator efficiency.
The outcome is almost entirely determined by launch costs.
You need both enormous solar panels and radiator panels. 1MW needs about 7000 square meters of solar panels. This would require 1,500 square meters of radiator panels along with a lot of coolant pipes that have to be kept edge on to the sun at all times. And all of this will require thousands of kilograms of structural support.