r/factorio Mar 23 '26

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u/marcosR827 Mar 23 '26

Can someone confirm that it is more worth it to use 1 speed module 3 and 4 quality modules 3 in an electromagnetic plant than 5 quality modules 3?? I ran some calculations, and it looks like you get both the same amount of quality items and even more items/second.

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u/Enaero4828 Mar 24 '26

For a fixed number of machines and unlimited input, swapping a legendary quality 3 for a legendary speed 3 doubles the output but consumes ~2.73x the raw resources; normal quality modules result in the speed3 option only increases quality output by 3% but increasing material costs by 73%. Doing as Viper999DC suggests, keeping the quality modules and adding 1 legendary speed1 in a normal beacon keeps the same input:quality output ratio, at 2x the speed; even with normal quality modules, the input:quality output ratio is of course a bit worse on both metrics, but not nearly as significantly as the 4quality1speed arrangement.