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CPU compatability, FSB?


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#1
steve1966

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Ive got an older dell with a 1.6Ghz cpu 400fsb, and I want to put in a 2.6 cpu 533fsb, is this possible?
Thanks
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#2
Ferrari

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Hmmm, some would, some wouldn't. Depends on the motherboard. Can you tell me the make and model of your computer? i.e. Dell Optiplex GX280.

I'll research and see what I find. I work on Dell's all the time, I might even have a 533mhz FSB processor and same computer in my basement. :)
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#3
steve1966

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It's a Dell dimension4300 from 2001
printed wiring assembly PanarNAUD

Edited by steve1966, 28 March 2010 - 06:48 AM.

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#4
Ferrari

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It looks like it will only support up to 400mhz FSB. CLICK HERE to see the technical specifications in the manual for your PC. Look at the "System Clock" under System Information.

The 533mhz FSB processor may work and turn on, but it will lower the clock speed. If you notice in THIS IMAGE that it shows the processors clock, but then it also shows directly after that what it's really running at. If you put a 533mhz in their (and it even turns on) the second speed will be a lower clock.

For example: On a 400mhz system you have a 2.6ghz processor with a 400mhz FSB, it will show as 2.6ghz. But on a 400mhz system with 2.6ghz processor with a FSB of 800mhz would show half that at 1.3ghz on the second clock listing. In that particular scenario, the system probably wouldn't even turn on, but just making an example.
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#5
steve1966

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So your saying that if I put in the 2.6/533 cpu and by chance the machine does turn, it will most likley knock the precessor speed down to maybe 2.1-2.2, or something?
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#6
Ferrari

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Yeah, something like that. That is if it turns on. It really mostly matters if the cpu you have is compatible with the motherboard. I'm not saying it will always handle all of it's instructions perfectly without any errors, but I've seen machines run fine with a 533mhz FSB processor on a 400mhz system.
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#7
steve1966

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Thamks Ferrari, I appreciate the input, Have a good day, Steve
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#8
Ferrari

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You are welcome. :)
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