Editing User:Ianator/Guide:EfficiencyBreakdown (section)

=== No Internals ===
These builds do not use Internal Efficiency Modules.

* Building, 1x1
** 1S with 1 Miner: 100% Eff.
** 2S with 2 Miners: 200% Eff.
** 2S with 1 Miner and 1 Sm-EM: 150% Eff.
** 1M with 1 OC Miner: 150% Eff.

* Building, 1x2
** 1M with 1 OC Miner: 150% Eff.
** 1M1S with 1 OC Miner and 1 Miner: 250% Eff.
** 1M1S with 1 OC Miner and 1 Sm-EM:: 200% Eff.
** 1M2S with 1 OC Miner and 2 Miner: 350% Eff.
** 1M2S with 1 OC Miner, 1 Miner and 1 Sm-EM: 350% Eff.
** 1M2S with 1 OC Miner, 2 S-EM and 2 I-EM ea.: 290% Eff.
** 2M with 2 OC Miner: 300% Eff.
** 2M with 1 OC Miner and 1 Sm-EM: 200% Eff.

* Building, 2x2
** 2M with 2 OC Miner: 300% Eff.
** 2M with 1 OC Miner and 1 Sm-EM: 200% Eff.
** 3M with 3 OC Miner: 450% Eff.
** 3M with 2 OC Miner and 1 S-EM: 400% Eff.
** 1M3S with 1 OC Miner and 3 Miner: 450% Eff.
** 1M3S with 1 OC Miner, 2 Miner and 1 Sm-EM: 500% Eff.
** 1M3S with 1 OC Miner, 1 Miner and 2 Sm-EM: 450% Eff.
** 1L2M with 3 OC Miner: 450% Eff.
** 1L2M with 2 OC Miner and 1 Sm-EM: 400% Eff.

* Building, 2x3
** 2M2S with 2 OC Miner and 2 Miner: 500% Eff.
** 2M2S with 2 OC Miner, 1 Miner and 1 Sm-EM: 550% Eff.
** 2M2S with 2 OC Miner and 2 Sm-EM: 500% Eff.
** 1L3M with 4 OC Miner: 600% Eff.
** 1L3M with 3 OC Miner and 1 Sm-EM: 600% Eff.

Conclusion:
* Small Efficiency Modules are only beneficial when replacing a single Miner on a 1M3S or 2M2S building frame.
* In all other configurations Sm-EMs are equal or inferior to simply adding more Miner components.