I had an inexpensive Toshiba Laptop, typing on it now, running at close to 1.6 Ghz processor with 1 gig RAM. Then upgraded it to 2 gig RAM and it seemed to run much faster, until I got my K20 with those 14 Mbyte images. In the library mode, there are times now with certain folders that the Loupe (single picture) mode of Library won't display and i have to go to the Develop Mode. Apparently the thumbnails in the library mode use up so much memory that it hampers the loupe mode.
Even in Develop mode, the "sharpening and noise" window sometimes won't display, i assume because the computer is running out of memory.
Yesterday bought a 2.1 ghz Toshiba duo core laptop with 4 gig memory running Vista with a guaranteed upgrade to Windows 7 from BestBuy. Sales person, who seemed very knowledgeable, checked on the computer and says it can be upgraded to 8 gigs of memory. He also said that the new Windows 7 requires only about 400 megabyes of RAM when operating compared to the 1.3 gigs of memory of Vista, so he though the 4 megabyes of this Toshiba would work just fine. Also told me a special graphics card not required or needed for photos, only video.
Any comments on this info appreciated. I don't mind spending money on lenses, just don't like to spend it onc computers
Phil