Conclusion
First of all let me sort the facts: As soon as Core 2 Duo hits the market, it will...
* be the fastest x86 processor (both single and dual core models)
* make the Pentium D and all predecessors look like antiques
* be the clear choice for performance users despite its rather expensive price
* outperform the complete Athlon 64 family (X2 and FX) in all areas, including gaming, where AMD has traditionally been very strong
* consume less energy than other standard desktop processors
* transform the whole Intel platform from an energy-hungry beast to a reasonable solution that is competitive in terms of performance per Watt