ok i have read into it. the options are flash, usb, or sd card. i have an inspiron e1505 2gb of ram 667 mhz, core duo 2 2.0ghz 667mhz 80gb 7200 rpm hard drive. now should i bother. i mainly want it to make boot faster. i have already messed with start up programs. i want to use 4gb sd card. i dont have one set place for my laptop so i move it around so flash or usb wont work for me. would sd be slower then usb or flash if i decided to use it and should i use ready boost?