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CPU upgrade speed


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#1
trekynerd

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Hi folks. Hope you can help.

I had a Pentium D 3ghz CPU installed in my PC (Windows Vista 32bit). On this chip I got a windows rating of 4.8 for calculations per second. I decided to upgrade to a faster CPU, so I installed an Intel Core 2 Duo chip, 3.06Ghz. The windows rating has fallen to 4.7. Any ideas why I am getting a slower speed from a faster chip? Any clues on how to correct this? I'm sure this new chip should be a lot faster.

Hope you can help folks
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#2
Neil Jones

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Which Core 2 Duo chip have you installed and which Pentium D model did you have before?
A faster actual clock speed does not necessarily mean a boost in performance.
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#3
trekynerd

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Hi.

I have installed an Intel Core 2 Duo E7600 3.06GHz Wolfdale 3Mb Cache LGA775 (1066 MHz)

The pentium D was an Intel® Pentium® D Processor 830
(2M Cache, 3.00 GHz, 800 MHz FSB)

Hope you can help
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#4
Neil Jones

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What is your motherboard make and model please?
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#5
trekynerd

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Hi

My motherboard is an ASRock 1333-D667

Thanks
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#6
Murray S.

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Howdy and welcome to GTG:

A quick check on the Asrock site shows to new processor is not compatible with that mobo.

Murray
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#7
trekynerd

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Hi.

Are you sure thats right? All my literature which came with motherboard states that it is fully compatible with Intel Core 2 Duo. Do you have a link to the website you checked?
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#8
Murray S.

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Go HERE.

When the page opens, click on the "CPU Support List" in the box on the left of the screen. That processor is not to be found.

Murray

Edited by Murray S., 09 August 2010 - 12:14 PM.

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#9
trekynerd

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Ok well thats fair enough lol. I would have thought that if the proccessor was not compatible with the motherboard it would not work, but it does.
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#10
Neil Jones

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The board will work, but will probably tell you "Processor not recognised" or "Unknown Processor". What happens in this situation is then sort of like "generic" mode. The processor will work, but the board can't take full advantage of it. This is true for about 99% of boards. Usually you update the BIOS to get round this if the new processor is supported by the board (which in your case it is not).

The exception to this rule is pretty much any Asus board (parent company of Asrock) that will simply refuse to do anything (even turn on) with a processor it doesn't recognise.

Edited by Neil Jones, 09 August 2010 - 03:40 PM.

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#11
trekynerd

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What a shame lol. Oh well, will know for furture reference.

Thanks for all your help. Much appreciated.
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