dumb question

[bailey]

I bought a new p4 1.8 northwood cpu and a asus p4t-e mother board and 4 sticks of 128 meg 800 mhz rdram.
upgraded the bios to ver 1005e

the dumb question is this:

the cpu is advertised as haveing a 400mhz fsb, the ram is good up too say 800 mhz
now to look at the setting in the bios, it looks to me like I still have a fsb of 100, where are all this fast stuff that caused me to buy this junk,
how do I run the cpu at 1.8 and the fsb at 400 so it will use the faster rdram

I must be missing something here, please enlighten me.

[HAL9000]

The FSB on a P4 is 100Mhz, but quad pumped, in other words, it's a 4 lane highway to total a 400Mhz FSB.

[bailey]

ok that makes more sense now, I found the bios setting that does that and the ram is at 400 now, thanks, this puppy really flies now.

by the way it did the upgrade with out having to do a format and reload.
both win 98 and w2000 detected the change and redetected everything its self.
I am really happy with this
temp is 86 deg f

[tmp]

What is FSB? How do you set 400 MHz in the Bios?

[bailey]

basicily the fsb is the front side buss, the circut between the cpu and the ram.

on the asus p4t-e motherboard with bios ver. 1005e, go to bios set-up
advance settings
rdram frequency ratio-fsb
set it for 3 or 4 depending on what ram you have and if you are overclocking or not
page 58 in the manual

[tmp]

Bailey,

Thanks for the info. Do you mean we have to set 4 in the Bios for PC100 Ram and 3 in the Bios for PC133 Ram.

[bailey]

no the board I was refering to uses rdram.
in the bios the rdram speed is set to 3 for rdram 600 and 4 for rdram 800
the fsb actually is 100 but sends the data to the dram in buss 4 paths.
if over clocking then set it to 3 requardless which speed rdram you have, for stability.
the 3 or 4 setting is times the fsb speed.