I hold a celeron m 440 processor on my laptop w/ 512 mb RAM will a 2GIG upgrade revolutionize the sluggish system?

I hold a celeron m 440 processor on my laptop w/ 512 mb RAM will a 2GIG upgrade revolutionize the sluggish system?

First check your documentation to find out how much memory your laptop will support, if you don't enjoy the documentation then hunt the web for your laptops specs., near is a limitation to how much you can put on. And Yes any RAM upgrade will modernize your system. I would upgrade to as much you can afford.
Yes.