Interesting! As a user, I sometimes need to change a motherboard & CPU. What should I=20 do to the OS other than install the new boards hardware support disk? On 2/6/2012 4:49 AM, alan.b.pearce@stfc.ac.uk wrote: >> So in the short term there would be no gain using one of these processor= s with >> current versions of windows and linux. > I don't know about Linux, but Windows certainly has different modules to = handle the different processors. You can have problems if somehow an AMD mo= dule gets applied to an Intel processor installation. > > It is all hidden from the installer and user by the HAL module. > > But when it comes to end user applications, it is anyones guess as to th= e code having switchable linked modules for the processor type. I guess if = they are wanting to squeeze the very last ounce of performance out of somet= hing then they may do it, but I suspect for most applications they use the = 'common instruction set' in the compiler. > > --=20 John Ferrell W8CCW Be thankful we're not getting all the government we're paying for. - Will Rogers --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .