All depends on the DVD app. I have not seen the same as you just stated real world compressions, since I have compressed more DVD's for home video watching than most a anyone I know ( hows close to 200 DVD's sound so far) all with TMPGEnc (Plus). AMD clock for clock is = or better than Intel I have found. a 1.7Ghz TbredB core was compressing at the same speed as my 2ghz P4 with same ram. My Dual 1.4 Ghz Tbird compressed close to 75% faster than my 2Ghz P4.
But I can do certain options to favor a P4 and others to favor a AMD.. it all depends how you want to compress and what bias you have. I think DVD compression benchmarks are bull shit overall since media source, and very very minor changes in the software can change compression time greatly.
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Joe - I only take this hat off for one thing...
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