How can I tell FSB speed?

  • Thread starter Thread starter Guertin Graphics Art Department
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Guertin Graphics Art Department

I just built my first PC, and I used a Chaintech 9CJS motherboard. It's
a P4 3.0g processor with an 800 Mhz FSB and I used 1 gig of DDR400
memory. The motherboard came with a utility that tells among other
things what the FSB is, and it says it's at 200Mhz, not 800. I don't
know if thtis is accurate, but I don't know where else to look to find
out. Is there someplace in XP that gives you this information? If it is
at 200, why? and how can I change it to 800? I saw nothing in the BIOS
about it, but Im no expert on these things and maybe I overlooked it. On
start up, it says memory 400 mhz, dual channel mode... does that mean
it's running at 800 (400 X 2)? Or is that not related to FSB?
Thanks for the help
 
Guertin said:
I just built my first PC, and I used a Chaintech 9CJS motherboard. It's
a P4 3.0g processor with an 800 Mhz FSB and I used 1 gig of DDR400
memory. The motherboard came with a utility that tells among other
things what the FSB is, and it says it's at 200Mhz, not 800.
Click to expand...

It *could* be that the RAM is running at 200mhz. This would be typical
for DDR400: dual data rate SDRAM. The CPU is quad pumped. 4x 200 = 800.
 
Hmmm ... You built it? Well, the FSB is CORRECTLY 200MHz. The Intel P4
processor runs INTERNALLY at four times the FSB, thus at 800MHz. The double
data rate (DDR) RAM runs correctly at twice the FSB, thus 400 MHz.
Everything is fine.
 
DaveW said:
Hmmm ... You built it? Well, the FSB is CORRECTLY 200MHz. The Intel P4
processor runs INTERNALLY at four times the FSB, thus at 800MHz. The double
data rate (DDR) RAM runs correctly at twice the FSB, thus 400 MHz.
Everything is fine.
Click to expand...
Both FSB and memory run at their designated speed / frequency. Dara transfer
on northbridge-cpu (fsb) is 4 time the fsb frequency "quad pumped", and
memory data tranfers are DDR, meaning double date rate (double the memory
frequency).
Everything seems to be configured correctly, except percieved scale and
marketing designations.
E.V.
 
I suspected it was something like that. I installed sisoft sandra and it
says it's running at 800Mhz, I just wanted to make sure I hadn't set
something incorrectly.
 
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