lenovo u330 cpu upgrade?

[sunnyhanda]

i have lenovo u330 with t4200 dual core 2.ghz 4 gig ram 320 drive. i want to upgrade its cpu so that i can use vitalization performance. i prefer 64 bit processor. what options do i have? plz guide.
thnks

 

[daisymtc]

?? I think the processor is 64bit??