Originally posted by: Jeff7181
Originally posted by: alexruiz
Why don't you test it several times measure the time in both systems with a quite large file, then average the times? that should give a good indication if this applies or not.... Remember that the applications MUST be optimized for SSE2/HT in order to run faster in the P4.
Not entirely true.
The Pentium 4's longer pipeline makes it more efficient at encoding media. When the P4 is fed large chunks of data to process it can keep it's pipeline full... AMD can do the same thing, but since it's pipeline is smaller, it can't process as much data. But... if the P4 is fed small chunks of data, the pipeline doesn't stay full, making it less efficient... AMD processors like smaller chunks of data because the pipeline is smaller and it can remain full and continue processing at high efficiency.
(that's my understanding of it, I know other things come into play such as branch prediction, instruction sets, etc, etc... but the length of the pipelines is what makes the two CPU's so different, as AMD could use SSEII just like the P4, and they have in the Athlon-64)