P4 types whats up with that?

[CheezHead]

Other than the FSB are they all compatible to one another??

the HT P4's are 800mhz.,my 1.5 400mhz FSB is a Willemett<~spell check,Prescott or Northbrige??
Whats the Difference and how can i tell what i have??

 

[iss]

Download aida 32 it will tell you exactly which model of processor you have.

the williamette is a 423 socket and the northwoods are 478 sockets.

http://www.aida32.hu/aida-download.php?bit=32

 

[NoisySilence]

The Willamette was available in both sockets ( 423 & 478 ). The only difference is mainly the 256K of L2 cache for the W ( instead of 512 for the N ) & the 0.18 manufacturing process.

 

[CheezHead]

So the 478 pin 400mhz Willamette is totaly compatible with a 400/533mhz mobo saying "Northwood only"??

 

[NoisySilence]

It could be that certain newer boards only support CPUs with 133FSB & up, so that would rule out any Willamette since they always used the 100FSB.

I can't say I've seen boards that only supported the Northwood though. Maybe they didn't specify Willamette since not many people still use them.

 

[CheezHead]

Ok,Thanks for the info I think ill focus on getting another cpu all togeather.

 

[CheezHead]

In Further probing into mobo specs, it seems the CPU speed is a major factor in witch the mobo supports. Like the board im looking at says "Intell P4 400mhz 1.7~2.6,,Intell Celeron P4 400mhz 2.0 or faster.

Go figgure.
What a drag

 

[tripleione]

They are not compatible. Willamet and Northwood have different number of pins on the CPU. Thus, if you try to fit a Northwood into a Socket 423-based board it will not work.

You could buy a 423->478 adapter, but it's best just to buy a new motherboard.

 

[NoisySilence]

Originally posted by tripleione
They are not compatible. Willamet and Northwood have different number of pins on the CPU. Thus, if you try to fit a Northwood into a Socket 423-based board it will not work.

You could buy a 423->478 adapter, but it's best just to buy a new motherboard.

There are Willamette CPUs in the S478 format, it's not a problem with the pin count.

 

[CheezHead]

at this point all i can do is get a faster CPU the one i have is basicly a poormans P4
Thanks alot for the info.

 

[tripleione]

Originally posted by NoisySilence
There are Willamette CPUs in the S478 format, it's not a problem with the pin count.

True, but chances are he has a 423 pin P4 anyway.