Hi! I'm new here, so i'm sorry if i posted in the wrong place and for my english, it's not my native language. I have a Gigabyte GA-MA74GM-S2H(rev 1.x, bios:F3) amd athlon64 x2 5000+, crucial ballistix ddr2 800 dual 2gb, radeon hd4770 and a no name psu 550W. On the gigabyte site i see that phenom II x2 550 is supported, but i have some doubts( it might not refer strictly to my revision) so i taught to ask some experts if it's really supported and if it worth upgrading.