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Newbie to using Laptop CPU in a Desktop.

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megadeus

Registered
Joined
Dec 28, 2006
I've build several desktop PC's in the past and have had no trouble with them, except for the occasional component failure :D

However, now I have a CPU from an IBM G40 Laptop that I'd like to possibly use in a desktop system but I cannot figure out what "type" of CPU it is. I know it's a P4, but as far as sockets go I have no clue.

On the CPU itself it has "2.68/512/400" typed on it.

I'd like to know, if possible, what type of MB would accept this CPU.

BTW: I'm not looking to OC it, just use it as a normal desktop system. I'm building a PC for my parents to use and they don't need anything extreme, just something for emails and word processing.

If you think I'd be better off just selling the laptop CPU and buying a normal desktop CPU I'd be up for that as well. If that's the best case then I'll be having a P4 laptop CPU AND a DDR 266 256mb stick of ram for sale.

Thanks for any and all help!

Paul
 
Not for at least a week, sorry.

I did do some surfing around and found a site (Intel I believe) that has some online identification guides and some software I could install. The guides didn't really help me any and since the rest of the laptop was junked I have no way of using the software to figure out which one it is.

Like I said I'm a newb to laptop CPU's but, on the one site, the PIN side of the CPU was almost identical to the one I have, but the FSB speed was not correct.

When I look at this CPU, the whole top is silver. Is that a heatsink pasted on to the actual CPU? I ask because the other front picture that I found had just the small rectangular CPU in the middle of the green board.

This may have to wait until next weekend for a picture to fully get the specs. I'm in no hurry though. If the pieces parts I have from another PC work together I might just put this one up for sale.

I'll be in touch...Thanks!

P
 
That silver thing is a heat spreader. It's a part of the CPU. (Most/all new CPU's come with them now)


Just post ALL of the info on top of the CPU

There's a code that will look something like this: SL7EY

Just post that here and we can tell you what it is.
 
512k L2 cache = northwood.

What I don't know is the 2.68GHz. For that it would have to have a 26.8 multi. AFAIK and as far as the sSpec finder is conserned there is no 2.68 CPU. There are 2.66GHz CPU's but they would have to have a 533 FSB (the last number).
 
Last edited:
Shelnutt2 said:
512k L2 cache = northwood.

What I don't know is the 2.68GHz. For that it would have to have a 13.5 multi. AFAIK and as far as the sSpec finder is conserned there is no 2.68 CPU. There are 2.66GHz CPU's but they would have to have a 533 FSB (the last number).


I was thinking the same thing. That's why I thought getting the Stepping was the safest way before recommending motherboards.
 
Actually it would have to have a 20x multi. 133 * 20 = 2666. 133 * 13.5 = 1795.
 
Moto7451 said:
Actually it would have to have a 20x multi. 133 * 20 = 2666. 133 * 13.5 = 1795.

I did the math wrong. I did it for a 200FSB chip. My bad.
 
It sounds like a P4M northwood to me. I've seen several of the 2.6's ( and others too ) come through work with folks trying to put them in desktop boards after the laptops died.

FWIW Asus dropped support on these CPUs a while back, you used to be able to run them on s478 boards like the P4P800 and the P4S8X-MX with the original BIOS' installed ( Built my GF a system with a 3.2/533/512 P4M, and had to find the production BIOS for the board in order to run it. )

Also, to avoid potential flags => I'm talking about the Pentium 4 M socket 478's, and not the Pentium M Dothan/Banias socket 479 CPUs


~ Gos
 
Shelnutt2 said:
512k L2 cache = northwood.

What I don't know is the 2.68GHz. For that it would have to have a 26.8 multi. AFAIK and as far as the sSpec finder is conserned there is no 2.68 CPU. There are 2.66GHz CPU's but they would have to have a 533 FSB (the last number).


Yea, I'll be double checking on this in a couple days. Sorry. My eyes aren't what they use to be :D
 
Success!!

http://processorfinder.intel.com/details.aspx?sSpec=SL6PP

That's my CPU. Thanks for the Spec Finder.

Here is what is on the heat sink on the CPU:

2.60 / 512 / 400

SL6PP

5350A685

9350C008

0932


So, can this be used in any 478 socket MB? I've been checking around Newegg for 478 MB's but they appear to be getting few and far between.

Thanks for any help!
P
 
jivetrky said:
So long as the s478 board supports 400Mhz Bus CPU's

Which I reckon most should as the P4s came in 400, 533, 800MHz flavours :)
 
I have to thank you all that helped me here. That Spec Finder was the link I had found last week. All I needed was the info from the CPU and wha-la - the info was all there.

I have a "wish list" made up at Newegg that includes the cheapest MB that has 400 FSB speeds, and accepts the 478 CPU. So I'm on my way, slowly, to building yet another system.

On a side note: I got some of the parts for this current system from my work. Along with this I was considering taking a 17" CRT but the PC tech guy said he has a 19" Sony flatscreen that is dead. He said it was more likely the PS that was bad. On a whim I searched for "power" and "supply" in the Display forum and again, my answer was there - DO NOT OPEN A MONITOR!! LOL!

Thanks again and a BIG Thank you for not flaming me for asking a question right off the bat... :D

I'm sure I'll have some more questions but for now, thanks again!
P
 
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