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I'm curious how OS X reports HyperThreading. I've never really heard much about it until the whole Apple/Intel alliance in June...

 

How does OS X show that you have HyperThreading? Does it show an extra "cpu" in the activity monitor? Is the machine noticeably faster vs. similar hardware without it?

 

Anyone running this beast on a Dual Core Intel P4? How does it show up there?

 

Inquiring minds want to know... :)

This is true, the ACPI flag. However, supposedly OS X is faster (in xbench) anyway with HT disabled...

 

Does anyone have a dual core? I'm curious if its possible to run xbench and only utilise half the core (disable SMP or whatever) and see if it runs faster...or if it just a HT problem with OS X currently.

This is true, the ACPI flag.  However, supposedly OS X is faster (in xbench) anyway with HT disabled...

 

Does anyone have a dual core?  I'm curious if its possible to run xbench and only utilise half the core (disable SMP or whatever) and see if it runs faster...or if it just a HT problem with OS X currently.

 

i will test it with and without htt for you and post the scores

Hmm, on my machine, I tested 2 cpus.. P4 551 & 640...

551 doesn't show anything on System Preferences tap, once I changed it to 640, an icon is showed, and it can be loaded on taskbar... and I can enable/disable HyperThreading.... It's only available for 640...

Hmm, on my machine, I tested 2 cpus.. P4 551 & 640...

551 doesn't show anything on System Preferences tap, once I changed it to 640, an icon is showed, and it can be loaded on taskbar... and I can enable/disable HyperThreading.... It's only available for 640...

picture15ma.th.png

P4 560

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