Hi
The multiplier is of no importance. Since the cpu is multiplier locked this bios setting is ignored during boot. Just disable 'cpu detect' or you will have a break during booting.
The 4:4:1 should be clock for cpu:ram: pci. Since pci is nominal at 33, this will mean 133:133:33. So pci divider is 4.
The 1400 celeron is for 14x100. It is not likely that it will do 14x133. By setting 4:4:1 this should mean that fsb gets 133.
Select 3:3:1 and it will run nominal. Then pci divider is 3.
You mention that celeron 800 will do 4:4:1. Since 8x133=1064 MHz, this is very likely to boot. But I should think that cpu voltage should be increased to about 1.85 volt then (for that cpu).
For the celeron 1400 you must never run with more than 1.7 volt during long time, since nominal voltage is 1.475 volt.
Your st6 raid should be capable of posting with correct speed. But a program like cpuid can be used for showing real speed.
Max. usable speed for a celeron 1400 is a frontbus of about 112 MHz. It will then do 1570 MHz. Pci will then run 37 MHz, and it is not wise to increase fsb more with this divider setting, since harddisks may fail.
One can try if setting 133:133:1, that is a pci divider of 4., and fsb to 124. Then pci runs 31 MHz, and the cpu will make 124x14. That is about the fastest with air cooling.
The celeron tualatin 1100 is a better candidate for fsb 133, and even 150. So it can make a much faster system than the celeron 1400.
best regards
John