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Replacing P4 1.5 GHz 256 400 FSB

Forum CPU & Components : CPUs - Replacing P4 1.5 GHz 256 400 FSB

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wlevansiii   06-06-2009 at 06:50:40 AM

I have an old Gateway D845VH machine with a P4 1.5 GHz 256 400 FSB processor. Can I replace that chip with a P4 2.6 GHz 512 800 FSB? Those chips are available for <$20. I can find the 2.6 512 400 chip, but they are around $100. Can I "underclock" the 800 FSB processor?

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AKM880   06-06-2009 at 07:44:56 AM
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I suggest for a whole new build overall, its not really worth $100. You could be getting a way nicer CPU for a $100. a Intel E5200 could easily out perform that 1.5Ghz P4. I don't think that a 800MHz FSB chip will work on a a motherboard that supports 400FSB, usually there are 400MHz/533Mhz motherboards. No you cannot underclock the 800MHz chip (or so I think....)

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moricon   06-06-2009 at 01:27:36 PM
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You will need to go with the 400mhz chip as your Mobo only supports that max CPU FSB. $100 is a rather large amount to pay for years old performance, bet you could pick up a whole better p4 system based on northwood on ebay for $100

------------------------------ CM Scout Case|Asus P5Q|Intel 7200 @ 3.8ghz|Artic Freezer 7|4Gb Tracer 1066mhz 5,5,5,12|HD 4870 @ 850/4400mhz|750w Corsair TX|1Tb Samsung F1|1Tb Hitachi 7500k|500Gb Seagate|250Gb Samsung|80Gb WD in Icy Box|2x22" 1650x1080|G9 mouse|G15 KB Win7|Vista|XP|Mint
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jj463rd   06-06-2009 at 01:59:16 PM
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Like the others have said it's not worth it.That system would be useful as a Linux box though.It's worth so little that I got 8 Pentium 4 systems for free and gave away 3 of them to friends.You're much better off getting (building a custom system is better) a newer system even if it's an el cheapo budget system.

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