No, you have been saying through this hole thing that with less Y= voltage there is more Z = current and that is incorrect unless you decrease X resistance and that you did not change. So you can't break Ohm's Law and the processor will not have enough Current or voltage to run at the necessary X resistance of the CPU.
Automotive starter draws more amps when the battery is low because of the slow rotation speed of the starter. So a decrease in starter Resistance (R) do to slow rotation speed or a bad starter.
Make some calculations 12v 100amp LINK:
http://www.rapidtables.com/calc/electric/ohms-law-calculator.htm