45 science pack per min (no space science but includes military science)
cheap and buildable with early entities, based on ASM-2 (blue assembler). no complex structure or belt waving, minor spaghetti alert. takes input from left and outputs to right. uses chemical plants, asm-2, yellow/red/blue inserter, yellow belts and medium power pole. lamps are optional
requires iron plate, copper plate, stone, brick, green circuit, red circuit, blue circuit, steel, coal and also petroleum, heavy oil, water
less than 20mw at peak.
minor note: you dont need filter inserters, they are there for showing what to put at that belt or pipe.