Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Hyperthreading on Pentium4

10 Dec 2009   #11
darkassain

Windows 7 Ult x64(x2), HomePrem x32(x4), Server 08 (+VM), 08 R2 (VM) , SuSe 11.2 (VM), XP 32 (VM)
 
 

Quote   Quote: Originally Posted by Digerati View Post
You do not have two CPUs. You should leave it at 1.
it depends since windows sees a P4 HT as "2" Logical processors but 1 core...
hold on ill test this right now...

edit just tried and yes it does disable the virtual core...
look at the pic
windows recognizes it as HT in the DM but deliberalty only uses one logical processor...
Hyperthreading on Pentium4-one-core.png




My System SpecsSystem Spec
.
10 Dec 2009   #12
Digerati

Windows 7 Profession 64-bit
 
 

Two processors means two CPUs in two sockets - such as you would find in a server board.
My System SpecsSystem Spec
10 Dec 2009   #13
MattRainier

7 Ultimate x64, Vista Ultimate x64, 7 Pro x64, XP Pro x86, Linux Mint Nadia Cinnamon
 
 

Quote   Quote: Originally Posted by Digerati View Post
You do not have two CPUs. You should leave it at 1.
If it's a dual-core CPU, in the Search (Windows key) type in msconfig and go to Boot >> Advanced Options >> Number Of Processors. It'll probably be set to 1, so set it to 2 and reboot.

You can also enable the second core directly through the BIOS, though it varies from BIOS to BIOS.
My System SpecsSystem Spec
.

10 Dec 2009   #14
darkassain

Windows 7 Ult x64(x2), HomePrem x32(x4), Server 08 (+VM), 08 R2 (VM) , SuSe 11.2 (VM), XP 32 (VM)
 
 

Quote   Quote: Originally Posted by Digerati View Post
Two processors means two CPUs in two sockets - such as you would find in a server board.
yeah but it does not define physical processors since i just explained with pic on the edit above me...
it also applies to logical processors (i.e HT, multicore) too...
My System SpecsSystem Spec
10 Dec 2009   #15
pillainp

Windows 8.1 Professional 64-Bit
 
 

A Hyperthreading CPU will be seen in DM, Task Manager and every other monitoring app (CPU-Z etc) as two virtual (logical) CPU's, since it uses two parallel execution threads.

Windows will treat it, for all intents and purposes as thought it were a dual core processor, not as if it were two discrete processors (dual socket).
My System SpecsSystem Spec
10 Dec 2009   #16
Digerati

Windows 7 Profession 64-bit
 
 

Quote:
If it's a dual-core CPU, in the Search (Windows key) type in msconfig and go to Boot >> Advanced Options >> Number Of Processors. It'll probably be set to 1, so set it to 2 and reboot.
No. That is bad advice. That setting is for debugging purposes during the boot process only. It only affects the boot process so leave it at the default setting.

What is the motherboard make and model?
My System SpecsSystem Spec
11 Dec 2009   #17
FTG

Windows 7
 
 

Well, I set HT to enabled in the bios, and re-installed. Still Windows shows 1 cpu graph. Then I went into bios and loaded all fields to defaults values, ( I don't know what else to try). And magically, Windows detects 2 logical cpus.
My System SpecsSystem Spec
11 Dec 2009   #18
Digerati

Windows 7 Profession 64-bit
 
 

There you go. Funny thing about defaults - they tend to work. Thanks for the follow-up.
My System SpecsSystem Spec
06 Mar 2010   #19
Slick1983

Windows 7
 
 

I'd like to revive this thread. My Pentium 4 3.2 is showing a paltry 1.7 performance rating after installing Windows 7. The BIOS is set to hyperthreading. The boot shows "2" processors. The Task Master shows two and I've rerun the tests. What am I missing?

Hyperthreading on Pentium4-slowpoke.png


My System SpecsSystem Spec
07 Mar 2010   #20
logicearth

Windows 10 Pro (x64)
 
 

Quote   Quote: Originally Posted by Slick1983 View Post
What am I missing?
A modern processor. P4s are old, my Core 2 Duo at a measly 2 GHz outperforms a P4 clocked at 3+ GHz easily. Hyperthreading does not always equal better performance, btw.
My System SpecsSystem Spec
Reply

 Hyperthreading on Pentium4




Thread Tools




Similar help and support threads
Thread Forum
switching hyperthreading on & off from the OS ?
(not from the bios!) how can i to switch HT off and on again from Windows operating systems? (intel uttiels ,tools)
Hardware & Devices
Any way to switch of hyperthreading in registry?
Hi, I urgently need to switch off hyperthreading on my HP Pavilion DV6 core i7 720qm running Windows 7 Home Premium 64bit! As I need to run a very processor intensive simulation software that only uses one thread and is taking minutes or hours for certain simulations, I am hoping to find a...
Performance & Maintenance
1.6ghz pentium4 720p movies
Hi :) I am having in my minf this question for more then a year, but i am asking it now because i got a brand new internet. Can i somehow, with special tools run HD 720p movies? i was trying to do taht, but for me topgear 720p audio was more late then video, and i cant fix it. Simpsons 720p...
Performance & Maintenance
Hyperthreading not showing up?
So it seems my hyperthreading is not showing up anymore in RC 7100. In the device manager under cpus it does show 8 procs, but when I open the task manager it shows 4 procs. HT is enabled in the bios and if I boot into Vista instead, it shows 8 procs in the task magnager as it should. Is...
Hardware & Devices


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 15:59.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App