At 19:02 27-06-98 -0400, William Aguero wrote: >Maybe someone can clear up a little confusion here. >Does the System Bus of a SE440BX Intel Motherboard run at 100 MHZ >with any Pentium II processor or only with a Pentium II 400 MHZ ? Officially, BX motherboard system buses run at 100 MHZ for 350 and 400 MHZ Pentium II processors. Some BX motherboards will detect *recent* 333 MHZ (or slower) Pentium II processors as such and refuse to run them at 100 MHZ. (They would then run the bus at 66 MHZ, or possibly allow 75 or 83 MHZ.) There is a trick (tape or nail polish on some pins of the Pentium II) that will allow you to bypass Intel's scheme for forbidding 100 MHZ on these "locked" 333 MHZ and slower chips. Some BX motherboards (Abit BX6 for example) are not affected by Intel's lock and will let you run your system bus at 100 MHZ (or even up to 133 MHZ) with any Pentium II. Older 333 MHZ and slower Pentium IIs may let you clock the system bus at 100 MHZ without modifications on any BX motherboard. Just because you can set the system bus for 100 MHZ for a 333 MHZ or slower Pentium II (with or without modifications) does not mean the Pentium II will function reliably (or at all) in this over clocked state. There could be overheating problems, or problems with the Pentium II's processor or it's L2 cache, or problems with your SDRAM. Only 350 MHZ and faster Pentium IIs are guaranteed to run with the 100 MHZ system bus and PC100 SDRAM. Regards, Bill