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Hyperthreading

By lazybedstar23 ·
Hello,

I just bought a Dell Dimension 8300 P4 3.0GHz with Hyperthreading and I noticed that my system is running slower than it used to with the same software i had installed on an older P4 about 2.0GHz. Is there any known issues with Hyperthreading? Is it best to turn it off? I am running XP Pro.

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by djent In reply to Hyperthreading

Hyperthreading is probably not your problem, it only comes into play for applications written for multi processor hardware and time slices floating point operations. There are many other elements to consider such as: OS, software compatability, drivers, background processes or interaction with them. So unless you just upgraded your 2mhz CPU to a 3mhz CPU you cannot make an honest comparison. Try installing your old hard drive in the new machine then compare.

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by csmith In reply to Hyperthreading

Hyperthreading is just many parallel pipelines to try and speed execution.
Hyperthreading conveys no benefit, and no penalty, when a traditional single instance program is run.
(Most Windows programs, Photoshop is an exception.)
Since you are looking for speed in this computing environment, the solution for your next PC should be a AMD 64 bit FX PC.
This is of course subject to change, as the PC market is competetive.
You should leave the hyperthreading on, although in your case it won't gain anything.
Regards, Chris

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by Boli In reply to Hyperthreading

to the post above.
a 64 bit processor should have a 64 bit operating system and a 64 bit processor is only different from a normal processor when it runs 64 bit applications!
Its like the HT CPU situaton, there isnt anything that has been optimized for it (YET), and it doesnt deliver anything special when doing normall things.
If any processor is near perfect (Apart from p4's cause u cant compare them with anything else) it would have to be an AMD opteron, it has the same ammount of comunications and calculations per clock cycle.

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