Dell CPU Upgrade?

It might be possible. What's the exact model?

I will say going from Sandy to Ivy bridge is a pretty tiny jump in performance, so I really doubt it is worth the hassle or money.

What are you hoping the new processor will help with?

+1 for twelve. It'll make more sense if your were jumping to an i7 rather that 2nd gen i5 to 3rd gen i5. which two cpu models are you jumping from and to? is there a substantial difference in clock and turbo speeds?

also it might not be that easy to do this because you need to perform a BIOS update before swapping out you cpu with new one. you must first check if such a BIOS update is available or not.

if you can share your desktop's model no/name, we may be able to help you check if a BIOS update is needed and available.

good luck
-satyam

Thank u all for ur reply.Its Dell Vostro 3550 Laptop.

You probably won't be able to upgrade it anyway. Laptops are designed around a small set of very specific processors.