Hyper-Threading: Enable Or Disable?

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JamesCRocks

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Joined
Jul 7, 2003
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174
Hi,

A friend mentioned to me that Intel's HT CPU's actually work like two half-speed P4 CPU's so my 2.6Ghz HT CPU actually runs (in HT mode) at 1.3. He said if you set it to non HT mode you will actually see some performance gains depending upon the task you are doing.

Firstly, is this true and secondly my motherboard has an enable hyper threading option ... is that what I would change to get supposed benefits?

Thanks
 
Joined
Jan 30, 2001
Messages
3,992
Yes thats what you would change. Of course you need at least windows XP to run hyperthreading. If you gain or lose pretty much depends on your applications and the way you run them. If you are a home user you probably won't see much of a difference.
 

Triple6

Rob
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Dec 26, 2002
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52,933
You should gain performance by enabling HT if running 2000 or XP.
 
Joined
Feb 24, 2002
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1,629
Sometime HT will cost you performance on some applications (rare) or no change whatso ever.

There are still reports of people getting crashes with HT, especially with gaming.

Your CPU will also need to support HT.

Try it... theres nothing to lose.
 
Joined
Aug 1, 2002
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5,531
What motherboard is this on ? As I understand it on Mobos with the 533 Mhz Front Side Bus only the 3.06 Ghz CPU or above can utilise HT. Only the newer 800 Mhz FSB Mobos permit using HT on CPUs below this limit.

Regarding applications - many reviews state that the full benefits of HT will only materialise when running apps that were specifically written with HT in mind. According to -

http://www.2cpu.com

There are for example only a very few games one I think being Falcon 4, and one fairly recent First Person Shooter that show a noticeable boost in performance.

Most of the positive feedback comes from people multi tasking - burning a cd in the background while playing a game or working with mpegs, etc ....
 
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