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 Post subject: T40 CPU Upgrade
PostPosted: Wed Sep 27, 2006 1:18 pm 
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Joined: Fri Jun 23, 2006 11:35 am
Posts: 6
Location: UK (United Kingdom)
How does one get a Pentium M 2.0GHz (533MHz FSB - Dothan) to run at full speed in a T40 which has a FSB of 400MHz? I have the latest BIOS and IBM embedded chip updates.


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 Post subject:
PostPosted: Wed Sep 27, 2006 1:39 pm 
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Joined: Mon Apr 26, 2004 10:29 am
Posts: 131
Location: Bangkok, THAILAND
It's not a good idea to use a chip with 533Mhz FSB with a T40. There are chips with 400MHz FSB availables such as P-M 755 (2.0GHz) and P-M 765 (2.1GHz). I would use one of those instead.

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 Post subject: Re: T40 CPU Upgrade
PostPosted: Wed Sep 27, 2006 1:57 pm 
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ThinkPadder
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Joined: Sun Feb 12, 2006 1:26 am
Posts: 1935
Location: Orlando, Florida
chaistt wrote:
How does one get a Pentium M 2.0GHz (533MHz FSB - Dothan) to run at full speed in a T40 which has a FSB of 400MHz? I have the latest BIOS and IBM embedded chip updates.



No it will run but at a lower speed with a 400fsb, so it is not a good upgrade.

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 Post subject:
PostPosted: Wed Sep 27, 2006 10:28 pm 
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Senior Member
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Joined: Sun Apr 10, 2005 11:05 pm
Posts: 523
Location: Texas Tech
Its not possible. The i855PM does not support the voltage signaling of the 533FSB chips to boot up at 533FSB. Im sure it would be stable if it was supported, but it is unfortunatly not.

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