Hello. I have a Dell Latitude E6400 laptop with an Intel Core 2 Duo P8700 2.53 Ghz processor. I would like to replace the Prock in it, but I do not know what maximum I can afford when looking at the capabilities of the equipment. I found information that I can put i3 or i5 in, but after a more detailed analysis of the processor specifications, it turns out that they have a different type of socket. What is the best processor capable of entering my laptop? I'm counting on your help. greetings