increase RAM = decrease battery life?

[gonnabuyamac]

I have a 2.2 C2D MBP with 2 gb of RAM. I'm considering upping it to 4 gb so that i can run parallels (vista business vm) and adobe cs3 at the same time without the computer slowing down to a crawl.

how much impact would adding more ram have on my battery life?

 

[heatmiser]

Should increase it a bit, as you'll rely less on the hdd for paging.

 

[Lyshen]

Negligible, although actually its possible it may increase your battery life because your hard drive will be used less for virtual ram swapping.

Less hard drive accessing, more battery life.

edit:
LoL what heatmiser said. Posted a moment later.

 

[gonnabuyamac]

ok, that's good to know. i was afraid i'd lose battery life.

i just ordered 4 gb from kingston for $99.

that's crazy, cause a year ago i spent like $125 on 1 gb