Anyone had a desktop processor in a laptop? Yes, I couldn't believe it.
An IBM Thinkpad G-40 with an Intel P4 2.6GHz 400MhzFSB desktop
processor. Intel makes an identical Mobile P4. IBM won't admit or deny
anything. The general parts list which covers all G40 and G41 models
lists a wide range of processors used in these but no details.

wigimon wrote:
> Anyone had a desktop processor in a laptop? Yes, I couldn't believe
> it. An IBM Thinkpad G-40 with an Intel P4 2.6GHz 400MhzFSB desktop
> processor.

It was quite common in "desktop replacement" systems from almost all
manufaturers around the time of the introduction of the PentiumM processor.
The G40 and G41 systems were sold as portable systems, not laptops.

> Intel makes an identical Mobile P4. IBM won't admit or deny
> anything. The general parts list which covers all G40 and G41 models
> lists a wide range of processors used in these but no details.

What's to admit or deny? The specs for the G40 are on the Lenovo website and
state that the systems are built on either an Intel Celeron or Intel P4 cpu.
You can lookup the specifics for your particular machine and determine
precisely what processor is used in it.
--
James

Visit the Thinkpad Forums
http://forum.thinkpads.com

Yes, some laptops were built with desktop P4's. In general, these were
not "good" models and tended to have a lot of problems related to
cooling, power consumption, heat. But there was a period of about 6
months a couple years ago when quite a few of the manufacturers tried to
make laptops this way.


wigimon wrote:
> Anyone had a desktop processor in a laptop? Yes, I couldn't believe it.
> An IBM Thinkpad G-40 with an Intel P4 2.6GHz 400MhzFSB desktop
> processor. Intel makes an identical Mobile P4. IBM won't admit or deny
> anything. The general parts list which covers all G40 and G41 models
> lists a wide range of processors used in these but no details.
>

"wigimon" <outbackdave@verizon.net> wrote in message
news:1163953056.936709.304590@j44g2000cwa.googlegr oups.com...
> Anyone had a desktop processor in a laptop? Yes, I couldn't believe it.
> An IBM Thinkpad G-40 with an Intel P4 2.6GHz 400MhzFSB desktop
> processor. Intel makes an identical Mobile P4. IBM won't admit or deny
> anything. The general parts list which covers all G40 and G41 models
> lists a wide range of processors used in these but no details.
>

Yes; and it will drain the battery in record time and you can cook dinner on
it with the amount of heat it produces; although with the short battery life
the steak will have to be pretty thin...

Honu

wigimon wrote:
> Anyone had a desktop processor in a laptop? Yes, I couldn't believe it.
> An IBM Thinkpad G-40 with an Intel P4 2.6GHz 400MhzFSB desktop
> processor. Intel makes an identical Mobile P4. IBM won't admit or deny
> anything. The general parts list which covers all G40 and G41 models
> lists a wide range of processors used in these but no details.
>
The Toshiba Tecra 9100 uses Pentium Mobile P4. No problems with it at
all. Upgraded mine to a 2.2GHz. The came out before the P4 Mobile.

Ian Singer

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Thanks James, I had done just that and when I called IBM Tech Service
one of my questions was,"What does the DT-P4 mean?" That is part of the
listing for each processor. Since DT looks like Desk Top that's what I
assumed but the IBM tech didn't know; at least that was what he
claimed. I'm going to try a used mobile P4. If anyone has one they want
to sell let me know or I'll have to go to eBay.

wigimon wrote:
> I'm going to try a used mobile P4. If anyone has one they want
> to sell let me know or I'll have to go to eBay.
>
I have an L215A488 SL5Z7 RH80532GC029512 that I am sure was a 1.7GHz but
someone else was telling me must be a 1.7. I know the Tecra 9100
reported it as a 1.7 and that was not a common model from them.

Ian Singer

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wigimon wrote:
> Thanks James, I had done just that and when I called IBM Tech Service
> one of my questions was,"What does the DT-P4 mean?" That is part of
> the listing for each processor. Since DT looks like Desk Top that's
> what I assumed but the IBM tech didn't know; at least that was what he
> claimed. I'm going to try a used mobile P4. If anyone has one they
> want to sell let me know or I'll have to go to eBay.

You can't "upgrade" the unit with a mobile P4, it's a different voltage than
the P4 that's in the unit and all you'll wind up doing is burning up either
the new CPU or the motherboard. Sorry.

I've missed what model G40 you've got. Post that and I can tell you what
desktop CPU you can upgrade to.
--
James

Visit the Thinkpad Forums
http://forum.thinkpads.com

JHEM wrote:

> You can't "upgrade" the unit with a mobile P4, it's a different voltage than
> the P4 that's in the unit and all you'll wind up doing is burning up either
> the new CPU or the motherboard. Sorry.

Sure you can upgrade a mobile P4 to a faster one if the motherboard
supports it like a Tecra 9100 does. You can not upgrade a mobile P4 to a
P4 mobile though.

Ian Singer


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================================================== =======================

In this case he's talking about upgrading a machine that was
manufactured with a DESKTOP CPU.


Ian Singer wrote:
> JHEM wrote:
>
>> You can't "upgrade" the unit with a mobile P4, it's a different
>> voltage than the P4 that's in the unit and all you'll wind up doing is
>> burning up either the new CPU or the motherboard. Sorry.
>
> Sure you can upgrade a mobile P4 to a faster one if the motherboard
> supports it like a Tecra 9100 does. You can not upgrade a mobile P4 to a
> P4 mobile though.
>
> Ian Singer
>
>

And the Mobile P4 was used in desktops too. It's a totally different
unit to the P4 Mobile or P4M

Barry Watzman wrote:
> In this case he's talking about upgrading a machine that was
> manufactured with a DESKTOP CPU.
>
>
> Ian Singer wrote:
>
>> JHEM wrote:
>>
>>> You can't "upgrade" the unit with a mobile P4, it's a different
>>> voltage than the P4 that's in the unit and all you'll wind up doing
>>> is burning up either the new CPU or the motherboard. Sorry.
>>
>>
>> Sure you can upgrade a mobile P4 to a faster one if the motherboard
>> supports it like a Tecra 9100 does. You can not upgrade a mobile P4 to
>> a P4 mobile though.
>>
>> Ian Singer
>>


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================================================== =======================

I think it's possible you are both right on different points. The P4 in
my machine is a SL6PP. The "identical" mobile P4 would be a SL6WZ. They
do have different core voltage requirements.I might be wrong but I
thought the chipset or BIOS would adjust the core voltage to the
correct amount. In the past, for example, we had various means to
change voltages on the motherboard like DIP switches and VRM modules
but mainly for desktops. I had a Compaq P3 laptop with a DIP switch
that I was certain was for that pupose but Compaq is worthless for
technical help so I didn't try to upgrade.
I'm going to do some futher checking on this, to make sure, but have to
go to work soon. But, another example, I have a PC Chips desktop
motherboard that can use any 478 pin Intel processor with 400/533/800
MHz FSB and they claim it's done in the BIOS. I use it for testing P4
or Celeron processors.

wigimon wrote:
> I think it's possible you are both right on different points. The P4
> in my machine is a SL6PP. The "identical" mobile P4 would be a SL6WZ.
> They do have different core voltage requirements.I might be wrong but
> I thought the chipset or BIOS would adjust the core voltage to the
> correct amount.

You're correct that you're wrong.

http://support.intel.com/support/pro.../CS-007500.htm

All you'll succeed in doing is releasing the magic smoke from either the CPU
or your G40!

Use the G40 for what it was designed for, a portable desktop replacement,
_not_ a laptop. They're excellent machines.
--
James

Visit the Thinkpad Forums
http://forum.thinkpads.com

I went to my "Geek Bible" (that's what I call it) Scott Mueller's
various issues of Upgrading and Repairing PC's (or laptops). He says
don't interchange them even though they will fit so, OK, I won't do
it!!!
On a bright note, though, I found an article by IBM stricly by accident
that says upgrading to the newest BIOS version fixes all the problems I
was having and it applies to models with the 2.6GHz P4 and up only.
Thanks to all. Follow-up will be posted after BIOS update and checked
out.

> Visit the Thinkpad Forums
> http://forum.thinkpads.com