about upgrading cpu of a laptop

[skb_pc3]

I'VE A laptop with i5 2450m sandy bridge can some plz....suggest me what is the best processer for me to upgrade---asus k53sm sx010d

 

[helpstar]

a new laptop would be better.

you can try buying one of them:
http://www.cpu-upgrade.com/mb-Intel_%28chipsets%29/HM65_Express.html

edit:
http://www.notebookcheck.net/Review-Intel-Sandy-Bridge-Quad-Core-processors.43714.0.html

But no guarantee it will boot or recognize the better CPU because of the motherboard´s BIOS.
cooling of higher wattage CPUs could be not sufficient in your laptop