sdx2 modules

Speed modules add a fixed amount each; yield and efficiency multiply. Yield draws no power. World speed multipliers assumed 1×.

Refineries

• Ore short — all yield, industrial first.
• Otherwise — Normal only: all speed. Four Industrial: 2 speed + 2 yield. One to three Industrial: each replaces one Normal speed module — the first as yield, the next two as speed.
• Efficiency — only under a hard cap on total power. numbers ↗

Assemblers

All speed, industrial first.