Every recipe that produces Iron Plate, compared at 100% clock speed on a single machine.
“Alternate: Coated Iron Plate” in an Assembler makes the most per machine, 75.00 items/min. Per unit of Iron Ingot, though, “Alternate: Steel Cast Plate” is the one ahead instead: 3.00 against 2.00, a gap of 1.5×.
Rates per minute are given at 100% clock speed. Solids are shown in items/min, fluids and gases in m³/min. Output per MW compares the step on its own; it excludes the power used upstream and by extraction.