Unable to go above 1984MHz with P4B266 + NW 1.8A

[battosai]

I am unable to go above 1984MHz for some odd reason.

FSB won't go above 110 regardless what Vcore I put in. (1.50 - 1.70)

Does anyone have any suggestion or pointer?

System Specification.

CPU: Intel Northword 1.8A CPU
Memory: Kensington 2 x 512 PC2100 memory
Video: Nvidia 5200 Ultra 128 MB
Storage: Maxtor 120gb
Sound Card: SB Audigy

 

[batboy]

We need to know what motherboard you have too. It's probably because the PCI bus is getting too far out of spec, although most systems will handle 112 to 115 FSB before that happens. See if there is a way to lock the PCI bus to default speed. Are you positive the CPU is a Northwood?

 

[battosai]

My motherboard is Asus P4B266, and it is a northwood CPU. It also says 1.8A on top of the cpu.

 

[batboy]

I looks at the article in the below listed link. There does not appear to be a way to lock the PCI bus. You might have to jump all the way to 133 FSB in order to use the 1/4 PCI divider. Might need a slight bump in vcore to do that too.

http://www.overclockedcafe.com/modules.php?op=modload&name=News&file=article&sid=222