right now fastest speed.

what the fastest speed for DDR right now?

ddr1 or ddr2? ddr would be ocz pc5000

It is my understanding that the PC5000 is mainly designed to be used with the DFI NF4. Most of the other DDR600 stuff is also optimized for A64, although I think there is some of the Intel friendly Hynix D5 that is binned for DDR600 speeds. I believe Adata makes it and that Komusa.com carries it. It is pricey.