ddr is not ddr2. If it had supported ddr400, it had ddr written, not ddr2... so no, it don't support it. in fact, it need an AM2 CPU, which has a ddr2 controller, not a ddr controller, like socket 939 or 754.
I think I've got a big problem:
I just bought this motherboard for my old Athlon 64 3200+, however, it does not fit the CPU.
The manual and the website says it supports Athlon 64x2, Athlon 64 and Sp, how come my Athlon 64 cannot fit the motherboard?
My old motherboard is 939 socket. So my CPU does not fit it?