ASUS X71sl processor update

joaquin1998 used Ask the Experts™
I have an ASUS X71sl with an Intel Core 2 Duo T5450 with a SiS M671DX+968 chipset. I can't find any web or information about that notebook  cpu compatibility.
I would like to upgrade to an T9400, but i don't want to spend my money in a cpu which can't work in my laptop.

Thanks for your help
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Most Valuable Expert 2013
Unfortunately SIS & Asus no longer provide support details for this.

This post based on the same Chipset and Southbridge for the previous model suggests it won't support better than a T9550 and even then you'll need to update your BIOS to the latest version before swapping, what I can find suggests the technology maxes out with the T9550 1066MHz FSB with 45nm technology

Archived Asus support posts list the CPUs supplied as options as:
Intel Core2 Duo Processor T5900/T5850/T5800/5750/T5550 : 2.2 GHz - 1.83 GHz, 677MHz FSB, 2MB On-Die L2 Cache;
Intel Core2 Duo Processor P8400/P7350/P6400 : 2.26 GHz - 2.0 GHz, 1066/800MHz FSB, 3/2MB On-Die L2 Cache
Intel Pentium M Processor T4200/T3400 : 2.16 GHz - 2.0 GHz, 800/677MHz FSB, 1MB On-Die L2 Cache
dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.
The Asus site is useless for that sort of information ...

These two links and indicate processors that can be used in your machine.  However I can't vouch that the details there are accurate.  

Before you do any upgrade check that your BIOS is the most current one available.
Top Expert 2013
i fear updating the processor is a waste of time and money - on such an old system
chances are even it won't work

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