I have a 3 year old Dell desktop with an E6300 @1.86GHz - 1066FSB. I am trying to find out if I can upgrade to an E6300 2.80GHz. Both units state they are for LGA775 socket. I want to find out if this ugrade will work without any problems and if it is worth doing. Intel told me to contact Dell but I am unable to get through to them due to some kind of tech problem on their side. Any help will be most welcome. Thanks in advance.