Strong/weak magnets against strong/weak electromagnets

wsx

Strong/weak magnets against strong/weak electromagnets
« on October 9th, 2013, 08:52 PM »
Everything has a binary outlook to be 1/0, on/off, black/white, true/false, etc
But to expand even more one should look at the next level to have 3 or 4 sides.North, south, east, west; black,white, pure gray, black/white to look like gray, etc.

Well the point is I still think a magnet is like weight how it goes on way and just like both does not fluctuate. But an electromagnet can fluctuate but need some energy.

1 If you take a weak magnet and a copper wire with a few coils you can get weak spin.
2 If you do the same and have more coils it will go faster.

3 But on the magnet side if you replace the magnet with a strong one and have many coils.
4 If you do that and replace the coil with a a few coils and less energy it will still spin.

I assume I lost some so to break it down. Shouldn't the energy put into it be a factor and the magnet size be a factor? Let’s say this general phrases to make it simple which you can distort it anyway you assume.
1 magnet power is 5 + coil loop is   5  = 10 (low power used and goes slow)
2 magnet power is 5 + coil loop is 10  = 15  (medium power used and goes medium)

3 magnet power is 10 + coil loop is   5  = 15  (low power used and goes medium)
4 magnet power is 10 + coil loop is 10  = 20  (medium power used and goes faster)

Which one is the more efficient device? I assume number 3.
If not well what if we take it a bit extreme to say
The magnet power is 500 + the coil loop was 1= 501 (less energy used but faster?)
Or
The magnet power is 1 + the coil loop is 500=501 (more energy used but faster?)