My PC was buitlt in 2001 and is a GATEWAY PERFORMANCE 1000. It has a PENTIUM 3 1.0GHz CPU with 3 slots for a total of 512mb of PC 133 SDRAM. The BIOS is by AMERICAN MEGATRENDS (AMIBIOS) and thats about all I can tell you about it. There are no part numbers or anything printed on the motherboard as a clue on who made it. I would like to know more about the CPU also. All I know about it is that it's a 1.0 GHZ PENTIUM 3. What is the part # and what upgrade if any can be done to this motherboard/CPU? If anybody out there knows anything about this please take a moment and clue me in! THANKS MUCH! I also have a 2001 GATEWAY SELECT 1100 with a MICRSTAR MS-6330 motherboard. It has a 1.1 GHz AMD ATHLON CPU with 3 sticks for a total of 1.5 GIGS of PC 133 SDRAM. That motherboard can be upgraded with up to a AMD ATHLON XP 1800 palomino (1.5GHZ) CPU.