Hyperthreading on Q9650?

[SimonB]

Hi,

Just fitted a Q9650 in place of an E8400 and I now have a Hyperethreading option in the bios (Asus Striker 2 extreme on bios 1002) it is only present when C1E and other options are enabled.

It seems to work although I am seeing strange results, anybody know for sure whether this new Hyperthreading is functional yet particularily in XP32.

Cheers, Simon.

 

[mmj_uk]

I wasn't aware of any Core 2 Duo/Quad's supporting Hyperthreading, only the upcoming Core i7 will support it.

 

[Lightnix]

I didn't think any of the Core 2's had hyperthreading. Does it show 8 cores on the task manager then? I'm guessing it's a bios glitch though.

 

[Jokester]

Core2s don't have HT, it might just be an option to disable the individual cores.

 

[SimonB]

Hi,

Thanks for the replies.

I am going from memory but thought Hyperthreading was going to be supported with some of the QX series, may be wrong though. The Asus boards are down but i'll get onto tech support there as soon as they are back up.

It is showing strange results though, only four cores showing in the task manager and cpuz showing 4 cores / 4 threads. If I disable (only Hyperthreading) the count drops to 1 core / two threads and If I disable all the energy saving features (as well as Hyperthreading) we are back to normal with 4 cores / 4 threads.

I will try some multithreaded benchmarks to see if there is any difference.

Can XP pro show more than 4 cores? should I try it with Vista?

Bios and boot screens are here,

Cheers, Simon.

 

[Fothsn]

Maybe a bios bug? No C2Q or Duo ranges have HT? Thought it stopped in the P4 series and now being brought back into the new Intel CPUS not yet released.

 

[Talrinys]

None of them have hyperthreading, it's a bug

 

[FreeStream]

What does windows say?

 

[Cob]

Some of the Gigabytes also had an issue where adjusting the hyperthreading option disabled cores. But it was just a bug. HT is there for the old Pentium chips and nothing else.

 

[Ace Modder]

CPUZ will show as 8 cores if you truely do have HT working.

I have seen it!

 

[SimonB]

Thanks for all the replies,

As suggested it must be a bios bug but why on earth should there be any references to 'legacy' Hyperthreading in a bios designed for the 790i?

I have had to run through half a dozen re-boots to get back to normal and even dropped to 1 core / 1 thread for a while. I cannot remember the option being present when I last had a quad core but the bios was several steps earlier, i'll go back to the previous bios for a while.

Cheers, Simon.

 

[Fothsn]

Thanks for all the replies,

As suggested it must be a bios bug but why on earth should there be any references to 'legacy' Hyperthreading in a bios designed for the 790i?

I have had to run through half a dozen re-boots to get back to normal and even dropped to 1 core / 1 thread for a while. I cannot remember the option being present when I last had a quad core but the bios was several steps earlier, i'll go back to the previous bios for a while.

Cheers, Simon.

I would send a email to the manufacture and see what they have to say, defiantly let them know.

 

[Corasik]

Thanks for all the replies,

As suggested it must be a bios bug but why on earth should there be any references to 'legacy' Hyperthreading in a bios designed for the 790i?

Cheers, Simon.

Why not? The board probably supports Prescott Socket 771 processors, and Pentium D's of which the Extreme edition supported dual core + hyperthreading (2 cpus, 4 threads.).

Not sure why Intel didnt put hyperthreading in Core, but its back in Nehalem(i7).