I was wondering if it was possible to install a single duo core into a quad core motherboard. For example like the Asus P5N-E SLI QUAD CORE , or Asus Commando Quad Core . in the description it says it supports pentium d, 4, core2, etc. so im wondering if its possible to put 2 processors into it or if it was able to run just one core like an single intel core2 duo.