Desktop cpu in a laptop?

[Rasto36620]

I have a dell 1525 with a 1.7GHz which is kinda low for running games and such. I have my old Emachine T6420 laying around collecting dust, I was wonder If I could take the AMD Athlonâ„¢ 64 3400+ Processor (with AMD 64 technology)1
(2.20GHz, 1600MHz system bus, 512KB L2 cache out of the emachine and put it into the laptop? Would it work? What are the risks?

Thanks for your time.

 

[Computer Head]

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