I am building a computer for audio recording & I'm not sure what processor to go with. How does a Core 2 Duo 2.66Ghz comopare to Dual Core 2.66Ghz. Is a Core 2 Duo 1.86Ghz with bus speed 1066Mhz about the same as a Dual Core 3.4Ghz with bus speed 800Mhz. Thanks