Even from 512M to 1G on a 6 hour render the machine (they were identical) with 1G finished 5 minutes faster. From 1 to 2G there is little speed payoff if any.
I have a Dell e1505 with these specs:
Core 2 Duo 2.0Ghz
120Gb 5400rpm Hard Drive
ATI X1400 Graphics Card
This is a pretty fast computer, but I would like to make it a little bit faster. I was just wondering if upgrading the ram from 1gb to 2gb would give the give it much of a boost in speed.