ASUS X71sl processor update

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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☠ MASQ ☠Commented:
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

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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
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.
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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