|IXP400 & SB400 are the same thing...it's the ATI southbridge chipset. The important chipset is the northbridge & it's most likely covered by a heatsink. Looks like it's probably the Radeon Xpress 200 (RS480):|
The BIOS info provided is useless.
But going back to what I said in response # 2, you have a socket 754 system. The reason I can tell is because you listed the "FSB" as 1600MHz. I put that in quotes because AMD doesn't use a FSB & hasn't for many years. If that's not good enough for you, try entering your CPU info into the filters:
So we now know that you have a S754 board, with the Xpress 200 northbridge, SB400/IXP400 southbridge & 4 DDR memory slots. We're getting closer.
You realize that the make/model & BIOS info is displayed on the POST screen when you 1st boot up, right? Just press the Pause key to read the info.