On Mon, 2009-12-07 at 16:18 +0100, Joerg Bergmann wrote: > Am Montag, den 07.12.2009, 09:02 -0600 schrieb Aaron Konstam: > > I acquired another computer recently that has a Pentium(R) 4 D CPU Dual > > core that is capable of hyper-threading. > > > > I was not satisfied with its performance so I looked carefully at its > > configuration and found that hyper-threading was disabled. A little more > > looking and I noticed that hyper-threading was disabled in the BIOS and > > could not be turned on. So what are my options if I want to enable > > hyper-threading and is it worth it? > > > > One option I assume is to find another BIOS. Are there other options or > > if it is disabled in the BIOS it is disabled? > > > > Another question is how much boost in performance should I expect from > > the dual core SMB functionality of the CPU? > > -- > > The problem of the Pentium 4 D: It is not really a dual core one. > Hyper-Threading means: There is one core with two execution paths, which > means some of the common CPU features, but not all, are present twice. > As I remember: Under some circumstances, there were some percent > performance boost. But mostly there was more a performace loss if one > enables hyperthreading on a P4. That may be the reason for having > disabled the hyperthreading in the BIOS. Things may have changed with > more up-to-date INTEL hyperthreading CPUs... > > Joerg > Thanks that makes sense. For your information the current Intel XEON processors use hyperthreading productively. However, Intel lists this CPU as one where hyper-threading is available but as you say it may not be productive. -- ======================================================================= He who laughs last -- missed the punch line. ======================================================================= Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@xxxxxxxxxxxxx -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
