Great compatibility as long as you are running programs from windows 95 and up you chould see no problems. Also never use the 64 bit web browsers since there are masive security holes in them. I have been buying HP Pro Books and HP Elites (over $1800) for years both for work and for home use. The quad core will last longer for you. I still have one from 5 years ago and it is still my main laptop (I have a HP Mini 110-1030nr and HP Mini 501 for traveling and for my parrents).