On Wednesday 31 January 2007 09:58, Alan McKinnon <[EMAIL PROTECTED]> wrote about 'Re: [gentoo-user] Symlinking /usr/portage/distfiles': > On Wednesday 31 January 2007, Bo Ørsted Andresen wrote: > > Furthermore Pentium 4 is a joke (it performs horribly). A 2 GHz > > (Dothan I presume) Pentium-M should be faster than a 2,8 GHz Pentium > > 4. My timing is for an 1,6 GHz (Banias) Pentium-M btw. > > This sounds odd, but I'm not a cpu expert so can't really comment. Care > to elaborate on why the P4 performs so horribly?
The instruction pipeline is very long, the CPU <-> RAM bandwith is quite small, and the pipeline has to be emptied any time the branch predictor is wrong. While the pipeline fills, the CPU works but no results are visible. Hz has never been a complete trump of other issues affecting CPU performance, but is always a factor to consider. (Among CPUs that are otherwise identical, higher Hz wins.) -- Boyd Stephen Smith Jr. ,= ,-_-. =. [EMAIL PROTECTED] ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.org/ \_/
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