Battery Life

[jagojago12]

Does anyone know how much does an extra stick of RAM affect battery life?

JEDEC specifies that PC133 SDRAM to operate at a DC voltage of 3.3V.
Although I have not done strict lab-environment testing between the before & after of having 2 sticks of RAM, I have felt a noticeable decrease in my battery life. My laptop initially came with 1 stick of RAM. I don't know if there really was a difference in battery life, or if it was just my "psychology" getting the best of me, meaning I only percieved my battery life to drop.

My PCGA-BP2E laptop battery has a voltage of 11.1V @ 3.4 AmpHours for 37.74 WattHours.

I have seen charts on webpages for power consumption in the past and it shows that having multiple sticks of RAM to increase in power usage, but I don't know how accurate those figures are. 2 128MB sticks of DDR at 2.50 Volts can use upto 30 Watts of power? Link: http://www6.tomshardware.com/howto/2...pplies-02.html

I have 2 sticks of 256MB PC133. Would having 1 stick of 512MB PC133 offer less power consumption than 2 sticks of RAM but of equal total capacity, and would it offer the same power consumption as 1 stick of 256MB?