Hyperthreading on Pentium4

Hi,

I have a Pentium 4 HT 2.6Ghz cpu. When I was using XP, the task manager displayed 2 cpu graphs, showing that Hyperthreading was active. But now in Windows 7, I only see 1 cpu graph. I thought Windows 7 supports hyperthreading ?

The only thing I might have possibly done wrong, was that I disabled HT in the BIOS when I installed Windows 7, only remembering to turn it on in the BIOS after installation.

Can someone with a Pentium4 HT cpu confirm that hyperthreading is actually supported in Windows 7 ?

Darn, looks like the feature is not enabled because I installed Windows 7 without turning it on in the BIOS. Oh well, will need to reinstall.

when i had my p4, i didn't have to reinstall to turn on/off hyperthreading in my bios and neither should you. it's a simple change in your bios settings

Control Panel>Device Manager: One or two CPU's listed? (If HT is on, the Device Manager should list two virtual CPU's under the Processor>Your Processor heading.

Task Manager>Performance Tab>View>CPU History>One Graph All CPU's or One Graph Per CPU selected?

I agree with 7thangel. You should not have to reinstall - just enable it in the BIOS. But do make sure first you have TM set to display all as shown in darkassain's 2nd image.

Would the "Number of CPU's" setting under the Boot>Advanced Options tab in MSConfig have any effect on this?

Would you check and see what it says? If it reads "1", set it to "2", reboot and see what happens.

You do not have two CPUs. You should leave it at 1.