I am contemplating on upgrading to a quad core cpu. Besides gaming I use my computer for 3D modeling (pro/e and some autocad) and ANSYS (FEA) and can get an advantage from multiple cpu's. What I am trying to decide upon is whether to get the Q9300 or the Q6700. I want to OC to 3.0 to 3.2 GHz and am pretty sure both will get there. I have an x48 Asus board with crucial DDR2 ram so I am not really FSB limited. Since both are the same price and stock speed, does anyone know if the extra L2 cache is worth the added power consumption of the 65nm device?