Sorry, but as I pretty clearly said,the whole clock speed thing _does_ matter a bunch on this very specific application -- mpeg encode and decode.
Other people have extensively benchmarked mpeg encode, and Pentiums win hands down. My own tests, described below, show the same thing for decode though I have not seen official benchmarks. For just about everything else, AMD is a better choice -- often faster, cheaper and lower-heat. But not for this one. For this one Intel wins, and the reasons are a combination of the fact that on some applications a faster clock really makes the difference, and some supposition that the long pipeline does matter on this particular app, though I have not seen that documented fully. But the CPU idle times are quite clear, I have two identical systems, one with Athlon-3000, one with P4-3ghz (512k cache), and the CPU used by the P4 is much less. On Mon, Dec 20, 2004 at 03:28:25PM -0600, Aaron wrote: > I would go with the Athlon 64, the whole clock speed thing doesn't really > matter as much anymore. In many cases a 2GHz Athlon 64 will outperform a > 3GHz Intel. The Athlon 64 has a built in memory controller, lots of cache, > and most if not more SSE and MMX type extensions. You would also have the > ability to switch things to 64bit as they become available. All of the > core Operating system and most applications are already ported and I > would expect them to get much faster once people start optimizing for > Athlon 64. And it does cost less. > > > However, no question, the P4-3ghz is way faster than the Athlon-3000 (not > > Ath64) at mpeg decoding. 30% idle or less on Ath-3000. 60% idle on > > P4-3ghz. > > > > This is because the P4-3ghz is at 3ghz, while the Athlon-3000 is at 2.2ghz. > > > > The ath64-3000 is at 2ghz -- it might even be slower than the regular > > athlon.
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