snadge
metal alchemist
A lot will depend on the graphics card there.
My macbook has onboard graphics, intel chip, pretty shit, the inspiron has an ATI mobile 256mb graphics card in it yet, when working wit raw images from my canon 5D my mac can process and size far better than the vista machine, it also seems to deal with multiple pictures better, although I don't profess to know how different OS's allocate memory, the mac can recall previously opened RAW files far quicker than the Dell.
Mine doesn't! 

