Solved! Upgrade the processor

[www.anuraguniyal]

Sir i have a laptop (hp elitebook 8640p ) I contains intel i5 2520 m processor which is of 2 generation therefore I want to change my laptop's processor in the new generation processor
So, kindly help me with that which processor I must buy ....

 

[nobspls]

It is a laptop, which means unless you are extremely lucky, there is not even a replacement motherboard that can go in to that form factor which supports the "new generation" processor. So in short, you need a new laptop.

 

[ChumP]

You can only upgrade your laptop to a Sandy Bridge processor (2nd gen).
These are the CPUs that you can upgrade to:

So the I7 2820QM is the best you can upgrade to.
Here's your laptop manual: HP EliteBook 8640p
On page 91 you'll find the list in my image.

Newer generation processors won't work on that motherboard either because of the BIOS version (3rd Gen Ivy Bridge) or because of the different CPU socket (4th Gen and newer).

 

[USAFRet]

MERGED QUESTION
Question from www.anuraguniyal : "Change mother board"

Sir I have hp elite book 8460 p it contains 2 gen processor therefore I want to ask that can I change the mother board if yes than plzz send me link or other helping guideline so that I may buy it so that I can purchase new processor with newer gen.

Sir I have hp elite book 8460 p it contains 2 gen processor therefore I want to ask that can I change the mother board if yes than plzz send me link or other helping guideline so that I may buy it so that I can purchase new processor with newer gen.

Laptop motherboards are not interchangeable.