Need a little help, please?

[plutomaniac]

Well the trick is the socket itself. AM3 is not too popular, from what I see. I found a similar CPU on the same socket, being a simple Athlon II X2 260. Which doesn't mean too much, only an extra 400MHZ to the entire mix.

AM3 is popular as with a lot of AMD's sockets and that's because that company likes to keep every socket for many years and cpu generations.

NO! Do not upgrade to a dual-core for any reason even for 1GHz up. You will just be wasting your money.