BUS Speed Questions

[Asrial]

1) When you see something like 150/45, what's the 2nd number referring to? I know that the 150 is the FSB speed.

2) Are all newer motherboards these days DDR on the FSB?

3) I'm looking over jumper settings for my motherboard (ASUS A7V333) and it talks about the CPU EXTERNAL FREQUENCY (assuming that's the front side bus? If so, is it the DDR speed or the base 133?) and BUS CLOCK (these are the same according to the info I got). ..am I on the right track? The CPU's external frequency is the motherboards speed?

4) I know what the FREQUENCY MULTIPLE does, but how is it derived? Is it motherboard done or CPU done or what?

Give me the low down on the different frequencies and speeds with regards to motherboard, memory, and processor.

 

[Zepper]

second number should be either AGP or PCI speed. AGP should be run as close to 66MHz as possible, PCI - 33MHz.
Edit:
. CPU external clock is the FSB speed - (usu. 100, 133, 166, etc.).
Most Athlons come with multiplier and VC (core voltage) values locked and are autodetected by your BIOS. You have to unlock your Athlon (procedure's posted all over the web) to play with mult and VC settings. All you can play with on a locked Athlon is the FSB clock which many mobos allow users to adjust in small increments.
. Oh yeah, on most mobos, the AGP clock and the PCI clock will vary with the FSB clock based on divider settings. You will need to change divider settings if you play w/FSB to keep those clocks in a range that your add-in cards can handle. The Asus is about the only one with a locked PCI bus speed (keeps at 33 regardless of FSB). Have fun.
End Edit:
.bh.