Hi first of all, I just registered to reply to you!
First of all, why do you mention always that you are an engineer student? That means actually nothing....!!!
I am actually an engineer (ECU programmer/ Dipl. Ing. and not only a student...)and yes I do know as well how a RAM works but I am not an mobile-phone specialist. However, see it from the point that the 'flag' setting/holding needs less power as to open and to use a task killer!
"CPU power overshadows RAM by
a factor of two or more. Audio displayed a largely static
power consumption in the range of 28–34 mW. Overall,
RAM, audio and SD have little effect on the power consumption of the device, and therefore offer little potential
for energy optimisation."
(
http://www.usenix.org/events/usenix10/tech/full_papers/Carroll.pdf)
Ergo the usage of a task killer seems to be not adequate.
Thus you are wrong and the conversation is closed!!!
(sorry for this but I think that this is not an adequate way to speak to other persons, this is a forum and respect should be always in first place and I wanted only to show you how it is...)