latexgurl Posted May 8, 2006 Share Posted May 8, 2006 Just wondering whether there is a difference between running a Pentium D 820 in one core mode or two core mode under 10.4.6? I run xbench and get about the same a 104.5 but I wonder if I am running parrelel processes whether I get the benefit because its only seen as one core? Any opinions or real knowlege would be great thank you, Ashley Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/ Share on other sites More sharing options...
Dee S. 73 Posted May 8, 2006 Share Posted May 8, 2006 2 cores is always better as OsX correctly identify them and uses them both.See my sig ... peace DS_73 Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/#findComment-109734 Share on other sites More sharing options...
bofors Posted May 9, 2006 Share Posted May 9, 2006 Just wondering whether there is a difference between running a Pentium D 820 in one core mode or two core mode under 10.4.6? I am having a hardtime imagining any time where it would be better to just run one core, but I suppose in some odd case when one core is using all the front side bandwidth (the two cores share a connection to the northbridge) it might. Playing a some single threaded games might be an example of this. I run xbench and get about the same a 104.5 but I wonder if I am running parrelel processes whether I get the benefit because its only seen as one core? This is just another example of the limits of Xbench's utility. You are almost always running serveral threads. OS X has many running in the background and most applications have at least their GUI thread so they remain response even when the application is busy doing something. The bottom line is that, unlike perhaps Hyperthreading, unless you are fine tuning some specific high performance application or perhaps playing a game, it makes no sense to disable one of your processor cores here. Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/#findComment-109882 Share on other sites More sharing options...
boza111 Posted May 9, 2006 Share Posted May 9, 2006 i have a prescot 3.2 ghz with hyper threading . but i think it only recognozes it as 1 core Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/#findComment-110076 Share on other sites More sharing options...
Shimms Posted May 9, 2006 Share Posted May 9, 2006 i have a prescot 3.2 ghz with hyper threading . but i think it only recognozes it as 1 core I have the same processor as you and when I have HT enabled in the BIOS, OS X System Profiler sees it at two cores. I can enable/disable the 'second core' in CHUD. XBench scores jumped by about 30 when I enabed HT. Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/#findComment-110078 Share on other sites More sharing options...
aberracus Posted May 9, 2006 Share Posted May 9, 2006 i have the 930 pentiumD and its FAST very fast with osx and recognized as two processors Link to comment https://www.insanelymac.com/forum/topic/16985-pentium-d-better-to-run-as-one-processor-or-two-does-it-matter/#findComment-110114 Share on other sites More sharing options...
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