Hi Upgraders,

Chris already states that this Kit from Dell is the fastest supported under warranty for an OptiPlex 745:

PN416 Conroe Kit, E6700, 2.66G, 4MB, 1066FSB, B2

My question now is, if a better/faster cpu dual or even quad core is possible in the 745's, even without warranty, as I will upgrade it after dell support is over (in a year or so) ?