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ThinkPad R400 CPU upgrade options

2017-10-29, 9:20 AM

Hey I have a Thinkpad R400 7443cto with a Intel P8600 in it and I was wondering what upgrade routes I have for this guy. I'd prefer to jump into a quad core if possible. 

 

Would something like the Q9100 work?

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4968 Posts

11-22-2011

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Re: ThinkPad R400 CPU upgrade options

2017-10-29, 14:17 PM

The simple answer is NO.

Lenovo never built a R400 with quad core support.

A R400 7443 came with a default T6670 processor.You have a P8600 installed and a customized to order machine-CTO.

A R400 7439 came with:

 

 

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Re: ThinkPad R400 CPU upgrade options

2017-10-29, 14:22 PM

So what is the best processor I can replace the built in CPU with?

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Re: ThinkPad R400 CPU upgrade options

2017-10-29, 14:54 PM

T9400.  See post below.

 

P8600 3MB L2 cache 2.40 GHZ

T9400 6MB L2 cache 2.53 GHZ

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Re: ThinkPad R400 CPU upgrade options

2017-10-29, 19:28 PM

Review of parts list in hardware maintenance manual shows you can go to a

T9900 3.06 GHZ. 

HMM manual page 262, PDF page 270.

https://download.lenovo.com/pccbbs/mobiles_pdf/43y6629_05.pdf

=

Earlier recommend was based on PSREF.  

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