why intel so much more expensive then amd?

[titaniumx3]

Core 2 Duo's do a lot more work per clock cycle than any AMD processor, and can be overclocked to much higher clock frequencies. A C2D running at 2Ghz bought for around £120 will outperform a AMD chip running at 3.2Ghz the same price. Baring the Intel chip can be clocked up to frequencies far surpassing that of the equivalent AMD, it's easy to see how they're so much better. Basically you can buy a £120 C2D and clock it up to 3.5Ghz, performance being around double that of a 3.2ghz AMD X2.

A bit of an exaggeration there. A C2D with 4mb cache at 2.4 ghz is about the same as Socket AM2 Athlon 64 X2 with 1mb cache at 3.0ghz. Some tasks will favour the C2D architecture and the large amount of cache, while others will favour higher clockspeed of the Athlon X2.

Obviously once you start overclocking then C2D completely thrashes the Athlons, but on a stock, clock for clock basis, the above is most accurate imho.