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HT Acting Weird

post #1 of 10
Thread Starter 
Good day.

I Hope that I am posting this in the right section, my apologies if not...

I am busy repairing my sisters P4 (P4 630 @ 3.3ghz) and I noticed something strange ... The system was extremely slow and even though the ramm is not high I know that it should run faster (it did in the past).


I opened up task manager and noticed that where it shows the 2 virtual cores no matter what I did to the system it "favoured" 1 of the virtual cores.







What could be causing this ?? ... She doesn't need a great pc as she uses it for office work and browsing ... so fixing this pc will save a great deal of money ...


All information would be greatly appreciated !!!

Kind Regards.
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post #2 of 10
Try to run a stability test like OCCT and see if it loads both (virtual) cores. As far as I know it's not possible for Windows to "know" which is the main core and which is the HT-enabled, so it wouldn't make sense to prioritize based on that.

Also you could use a soft like "sisoft sandra" to asses the CPU & memory performance against the benches from its database - you will know if the CPU/memory acts as it should.

I'm not saying you should change it for an i7, but having a slow HDD and less than 2GB of RAM can really hurt performance, even more so on a slow-ish CPU.
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by dragosmp View Post
Try to run a stability test like OCCT.

I'm not saying you should change it for an i7, but having a slow HDD and less than 2GB of RAM can really hurt performance, even more so on a slow-ish CPU.

The drive in that system is a seagate 7200rpm drive ... and I will up it to 1gb ramm but it's not really needed as the most common things she runs is WMP 10 ... Google Chrome ... and office 2007 ...


Where can I get OCCT ??
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post #4 of 10
A single threaded process can only ever use one core (virtual or otherwise).

I've not used OCCT, but try Intel Burn Test

Download link here: http://www.ultimate-filez.com/files/IntelBurnTest.zip

Set the "threads" dropdown to two and see what results you get then.

leave the stress level as standard or max if you don't have enough for standard.
    
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post #5 of 10
Thread Starter 
Will give it a go 2night ... ... Will post results ...


Just a question ... Should the load be identicle between the 2 cores ... by this I mean ... should eac graph in task manager have the same angles and kinks ... or not ??
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post #6 of 10
No, definitely not, you will see them the same using a stress test tool like IBT because they will both be at 100%.

Under normal operation it is unlikely they will ever follow exactly the same curve.

Also, their performance will differ, HT works by using parts of the core not already processing to process another thread of data. But it's still only a single core so a high load on one of your virtual cores will affect the performance of the other virtual core (where in a dual core machine it wouldn't [directly]).

Hope that makes sense.
    
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post #7 of 10
Thread Starter 
Hey hey ...

I do understand what you said ... mostly ... but I understand enough 2 realize that something is severly wrong with my sisters system ...

Forcing the burn test spiked both cores straight to 100% ... but un-raring (new word ?? ... lol) any file while listening 2 music and browsing the web spikes just the 1 core like in the pic posted above ... my friends p4 which has the same processor spikes not exactly but as if it almost shares the load as close as possible ...

Does this mean the processor is on it's way out or does it mean windows is not designating right ??
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post #8 of 10
Hyper thread is only used in certain tasks.If ibt maxed both threads you should be fine.

This is why ht cpu's are not worth the extra money unless you specifically run programs that benefit from it.

Also you can replace that pentium 4 for around 15 or 20 bucks so It's no biggie.
If you can get a pentium d cpu as a replacement if the motherboard supports it.That would be a nice upgrade and boost in power.
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post #9 of 10
What you're describing on your sisters computer sounds like normal core activity to me for single threaded operations (most things).
    
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post #10 of 10
Thread Starter 
Strange ... it never used 2 do this ... anyway ... guess it's time to put the old gal 2 rest and get a new pc 4 her ... this is goin 2 be fun !! ...

LOL ... I wish it was that cheap to upgrade in my country ... hahahaha ... but I will be looking into it ... pity LGA 775 is dying off slowly ... would have made a nice upgrade option ...

Thanks for the info !!

Kind Regards
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