AE Cs3 and the RAM

Most applications are 32 bit, and the adobe suite is no exception. Final cut is too. Leopard may be 64 bit and harness more than 3 gigs of ram, but the apps can't. CS4 for windows will be 64 bit, but not the mac suite.

 

AE Cs3 and the RAM

Actually AE CS3 in one of the few programs that will use a lot more than 3Gb of Ram, as long as you have more than one processor. You see, it has a limit of 3Gb of RAM per process, so if you enable multiprocessing each process will use up to 3Gb of RAM. I do have one recomendation to avoid crashes, in AE CS3 lower the maximun memory usage from the default of 120% to 100%, that will ensure a lot more system stability.

Hope this helped

 

I'm pretty sure that enabling multiprocessing will only effect things in the render que... for normal RAM previews, it'll still be stuck at 3GB.