Advanced Micro Devices Inc (AMD)

[chipdesigner]

The P4 820D doesn't have HT, Dempsey does. But that's a small part of the problem.

Here's a good overview of the issues: http://www.eecs.harvard.edu/~dbrooks/cs246-fall2004/static_power.pdf

And, again, Dempsey reduced power parts are to be at 105W with limited clocks.

Plain-old Dempsey will be significantly higher, especially at higher clocks.