hi again!! My motherboard is an amd athlon x2 64 4200+ 2.2GHz! i believe that its fsb frequency is 2000 Hz. i want to buy ram (DDR2) but i dont know in which freq it sould be runing to be more efficient?? thnak you for you time!!!
1066MHz would be the best frequency you can get at DDR2 this should work for your mobo... http://www.eio.com/p-22812-kingston...-pin-ddr2-sdram-ddr2-1066-desktop-memory.aspx
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231246 http://www.newegg.com/Product/Product.aspx?Item=N82E16820104073