About six months ago I was working on a Celeron 600MHz with about 128 meg of memory. I was a happy.. I remember boasting to my friends that my systems was fast. And for what I used it for... it was. Then it happened.. I bought Poser. Suddenly 600MHz was not enough.. so I purchase an Athlon 1333 with 512Meg, 60Gig drive... I actually bought the parts and built it my self. So for a couple of months I was happy again. But now I find myself back where I started.. 6 months ago.. I NEED MORE SPEED!!!!. but I can't afford it.. So here's the question.... Has anyone noticed a difference in render times upgrading from 512Meg to 1024meg? running windows XP. or Has anyone built them selves a dual cpu system.. do you get twice the performance? Nick