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ps2cho
11-21-06, 09:18 PM
Hey guys,

My dad is possibly looking for a cheap upgrade to boost his computer by upgrading his current P4 Northwood 2.4GHz.

We were looking on ebay and some other places and we found many cheap P4 3.06 Northwoods which are mobile ones...

http://cgi.ebay.com/INTEL-MOBILE-PENTIUM-4-3-06-GHZ-SL726-533MHZ-SOCKET478_W0QQitemZ290053138140QQihZ019QQcategoryZ 14293QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Would this work or is it risky if the BIOS would recognize it correctly?

His motherboard is a MSI GNB Max-SR Or MS-6565. It is the same socket.

He is a little stuck as his motherboard only supports Northwood CPU's...and they are all $140-$200 each...
Any ideas?

Thanks, ps2cho
Overload
11-21-06, 11:06 PM
Never tried it, but i dont see why it wouldn't work. they are basically the same chip (i think). however i dont see how you would gain much either. what sspec is the p4 northwood?
Maviryk
11-21-06, 11:36 PM
It should work. There's no such thing as a P4M. That's basically a desktop chip they stuck in a laptop. There are Pentium 4s, and Pentium M's, but no P4Ms.

Real "Mobile" Procs made by Intel are of the socket 479. The P4M listed is Socket 478.
Mr. $T$
11-22-06, 12:18 AM
It should work. There's no such thing as a P4M. That's basically a desktop chip they stuck in a laptop. There are Pentium 4s, and Pentium M's, but no P4Ms.

Real "Mobile" Procs made by Intel are of the socket 479. The P4M listed is Socket 478.


Up until recently the mobile processors where typically underclocked and undervolted desktop variants. The Banias core in 03' was the first processor with energy efficiency in mind.

http://processorfinder.intel.com/List.aspx?ProcFam=826&sSpec=&OrdCode=

All of those are desktop compatible s478. They will work in anyboard that supports its core type.
ps2cho
11-22-06, 02:17 PM
So why are they $50 compared to $180? Seems funny...why would people not buy the mobiles instead then?
Maviryk
11-22-06, 02:22 PM
Because Joe Sixpack doesn't know they're the same chip.
ps2cho
11-22-06, 02:27 PM
Well my dad will probably bag one of these as it should give him a cheap boost from his 2.4c Northwood(hes got it running at 2.8 right now)
e6600
11-22-06, 02:43 PM
Because Joe Sixpack doesn't know they're the same chip.
lol
JLK03F150
11-22-06, 03:23 PM
The P4M has speedstep built into it. It will default to a 12x multi & there is no way to increase it when you put it in a desktop board. Other than that, it will work fine.
ps2cho
11-22-06, 06:06 PM
Is the default 12x on that chip, or would it be SET to 12x ?
JLK03F150
11-22-06, 07:59 PM
All P4M's will have their multi SET to 12x (Celeron M's have a pin-mod to allow multi adjustment). You can still easily overclock the FSB though - provided the mobo & ram can support it. 12x200MHz will give you a 2.4C vs your Dad's 2.4B. Unfortunately you need 255FSB to get back to 3.06GHz.
Shelnutt2
11-22-06, 09:20 PM
Ok guys let me set some things straight.

Intel did make P4-M's or Mobile Pentium 4's. They came before P-M and after the mobile PIII's. They were relatively short lived but they were out there.

Short answer to your question is no it will not work. Long answer is try and see. On most motherboards the P4-M's boot up fine but drop the multi to their lowest setting which I believe is 11x or 12x. (Note, afaik these did not have EIST, they had an early adaption that later became EIST hints why the 11x). Now because of the ultra low Multi's the P4-M's are some of the best overclocking northwoods around. They never were popular because the 2.4B/C came out and stole the spotlight.
ps2cho
11-23-06, 11:30 AM
Ok guys let me set some things straight.

Intel did make P4-M's or Mobile Pentium 4's. They came before P-M and after the mobile PIII's. They were relatively short lived but they were out there.

Short answer to your question is no it will not work. Long answer is try and see. On most motherboards the P4-M's boot up fine but drop the multi to their lowest setting which I believe is 11x or 12x. (Note, afaik these did not have EIST, they had an early adaption that later became EIST hints why the 11x). Now because of the ultra low Multi's the P4-M's are some of the best overclocking northwoods around. They never were popular because the 2.4B/C came out and stole the spotlight.

So it's a risk buying it if it wont work?
Shelnutt2
11-23-06, 11:32 PM
So it's a risk buying it if it wont work?

I don't know of a case where it hasn't worked in a mobo (feel free to search the forums as in the past there has been a few threads on the P4-M), but I do recall cases were the CPU worked but only at the low multi. Thus you end up with a 1.1 or 1.2GHz Northwood....which is just yuck!
ps2cho
11-24-06, 05:17 PM
I don't know of a case where it hasn't worked in a mobo (feel free to search the forums as in the past there has been a few threads on the P4-M), but I do recall cases were the CPU worked but only at the low multi. Thus you end up with a 1.1 or 1.2GHz Northwood....which is just yuck!

Im not worried about it not working...im worried that it will be as you said at 1.1GHz which will be a waste of money.
JLK03F150
11-24-06, 09:09 PM
If it boots in your desktop mobo it will be a 1.6 GHz cpu (12 x 133).
ps2cho
11-27-06, 06:20 PM
Shame :( I told my dad to wait and do a full upgrade in the near future.