Question about Intel P4 Socket-478 Original CPU Cooling Fan with Copper Base - Supports up to 3.06GHz CPU Fan, CPU Cooling Kit, Cooling Fan

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P4 ugrade required

HI, I am looking for the fastest Intel P4 cpu I can get for an existing motherboard, it will support up to 3.4GHz Extreme socket 478, so I would like to get one with 2MB cache and 1066MHz FSB if possible.

I can't find any!!

Please help.


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Sadly you wont find any 1066Mhz FSB processors for the Socket 478. The best you can find is the 3.4Ghz with 800Mhz FSB. It might be cheaper and also better value for you to get a Socket 775 based motherboard and Core2 Duo processor. The value range E2160/2180 processors or the E4300/4400 processors have been tested to be even faster than the Socket 775 Pentium Dual 3.4Ghz and they also use less power.

An article on socket 478 for you

Posted on Dec 11, 2007


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Can i up grade my single core cpu pen4 550 3,4GHz to a Quad core or dual core either one would help

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Hope this is the information you were looking for.


Jul 04, 2008 | Intel (P42000400512SK478) Pentium 4, 2 GHz...

1 Answer


2.2Ghz should be the fastest for your motherboard, also the cpus FSB is MAX 400Mhz

the socket is S478

only old cpus work in your motherboard new and currently being sold, core 2 duo family prosessors wont work. they all have fsb 667 or higher and your motherboard only supports up to 400fsb

here is the best cpu for your pc

I would recommend a whole new system.

Apr 05, 2008 | Computers & Internet

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Processor compatibility

looks like you limited to the p4 Prescott, this is a p4 list of the cpu support from asus. I also looked at their bios update page and found no bios improvement. if you can move to the 775 platform ,you can move from p4. otherwise, the p4's are still  good . I had the cpu that is the 2nd one down. 3.2ghz oc'd to 3.8ghz full time with a max of 4.0ghz on air[775 platform] quad-pumped gave me a 1001.3mhz FSB
Supports Intel Prescott CPU
4-3.20 GHz Extreme Ed. (800 FSB, HT)   ALL ALL gogo.gif
P4-3.20E GHz (800 FSB, L2 cache:1MB, HT, 90nm)   ALL 1006 gogo.gif
P4-3.40 GHz (800 FSB, L2 cache:1MB, rev.G1)   ALL 1011 gogo.gif
P4-3.40 GHz (800 FSB, L2 cache:512KB, HT, D1)   ALL ALL gogo.gif
P4-3.40 GHz Extreme Ed. (Socket478, 800 FSB, HT)   ALL ALL gogo.gif
P4-3.40E GHz (800 FSB, L2 cache:1MB, HT, 90nm)   2.00 1006 gogo.gif
P4-3E GHz (800 FSB, L2 cache:1MB, HT, 90nm)  

Oct 30, 2007 | ASUS P4P800 SE (890552603657) Motherboard

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