Every recipe that produces Modular Frame, compared at 100% clock speed on a single machine.
“Alternate: Bolted Frame” in an Assembler makes the most per machine, 5.00 items/min. Per unit of Reinforced Iron Plate, though, “Alternate: Steeled Frame” is the one ahead instead: 1.50 against 0.667, a gap of 2.25×.
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.