Rumor is that Longhorn will require Dual Core 4-6 Ghz processor. With Intel announcing they are up against the wall at 3.8 Ghz (No 4.0 Ghz plans), and the dual cores will be underclocked due to heat issues, Microsoft had to do this or else face a serious roadblock($$$) to Longhorn adoption.
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Rumor is that Longhorn will require Dual Core 4-6 Ghz processor. With Intel announcing they are up against the wall at 3.8 Ghz (No 4.0 Ghz plans), and the dual cores will be underclocked due to heat issues, Microsoft had to do this or else face a serious roadblock($$$) to Longhorn adoption.