It's fairly linear.
by R. Proffitt - 4/24/13 8:38 AM
In Reply to: New laptop spec to handle large raw/tif files in Photoshop? by TN Person
That is, if your old laptop is some Core2Duo with 2GB ram then you extrapolate what the delay will be on a newer PC with more RAM and faster CPU. But at no time will it be near zero in time. Without knowing what you have, it's not a good idea to supply you any idea except maybe a top of the line Apple.