Pentium 4 Newbie

[class95]

I have been wondering. A pentium 4 with a FSB of 800mhz and paired with a board with a 400mhz DDR memory bus.
1)Does asynchronous bus cause the P4 system to slow down as like the AMD based system?
2)For example a P4 3.2C (233x16 at default) 16 is the multiplier and wat does 233 stands for?
3)How do we overclock a P4 with FSB like 400,533,800 when the multiplier is locked?

Thank you.

 

[johnjkr1]

First thing, the P4 is a quad pumped bus. So that is why the numbers are all strange.

For example:

100mhz bus = 400

200 bus = 800

It is not as bad to run memory asynch on the P4, but you should really try to keep the same mem/fsb.

The way you overclock a P4 with a multiplier lock is to raise the FSB:

Say you had an old P4 1.8 on a 400 bus
stock bus speed is 100x 18 = 1.8ghz
to overclock, move up the fsb to say:
133x 18 = 2.4 GHZ


The 233 you see would be an unofficial FSB. P4's go up to 200.

 

[Algere]

1) Not that I know of and the motherboard is usually dual channel supported i.e. 2*400MHz=800MHz
2) IIRC 233 sounds like a overclock from 200 (233*16=3.73GHz) 233 is the CPU Clock frequency.
3) By Raising the FSB frequency above specified frequencies. i.e. from 133 to 166. FSB is actually 100, 133, and 200 depending on P4 model. Since the P4 is quad-pumped (100*4=400, 133*4=533, etc.) that's how you arrive @ those frequencies.