> But I have a bit of problem understanding how dual core > system > could be that faster when accessing a slow I/O like USB > flash disk. Regardless of why, the difference between dual core and single core with 2 applications running is very substantial. A graphics display task that is displaying a new image every 5 seconds or so, with files typically in the 2 to 3 MB range slows to a crawl. Attempts to copy files using this program similarly slows. Also, and I'm not sure of this, AFAIR inter PC LAN transfers also slow down. (I sometimes use 2 laptops for this with one for download and initial manipulation and an ethernet cable link to another for viewing of photos by guests or whoever. > I do notice that copying many small files to a USB flash > disk is slower. > Zip it and then copy the zip file and it is much faster. > It is the > same for copying large amount of files over the Internet. > Zip it > and then copy will be much faster. I'm sure there are many workarounds. But, as I said at the start, I don't want to find out how to do things differently - rather, I want to use a tool which allows me to continue to use the solutions that work well for me. This is a good model of life in general. One can get any number of people telling you that you should or could do things differently in order to fit in with the limitations of the solutions they wish to offer, when what people would most like are solutions that are solutions. In this particular case, ANY dual core system that I have tried (and I've tried a small number of both Intel and AMD offerings, included the slowest that AMD had to offer at the time) and each has proven to be a solution. That's what I'll be buying. Anything that makes a dual core system work better for little or no more $ is a bonus. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist