Will it work?

[mrokayguy]

775 socket HP duo core I want to upgrade my processor

 

[ekoostik]

What motherboard is in your machine?

 

[flyinfinni]

Depends on what Mobo you have as well as what processor you have (or what model HP the computer is). Most likely, you will be able to upgrade to a faster LGA 775 processor, but we need more info to tell you for sure.