So I am up grading my Dell Latitude e6400 and it uses 4gb ddr 2 150gb ssd and Core 2 Duo P8600. Should I get the Intel Pentium T4500 or the Core 2 Quad Q9100 CPU and will I be able to.(List of the socket my cpu runs on http://www.cpu-upgrade.com/CPUs/Intel/Core_2_Duo_Mobile/P8600_(Socket_P).html)