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1.8a Northwood Multipler

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Feb 20, 2001
All the Northwood chips have a locked multipler right???

The mulipler for a 1.8 should be 18 correct??



Senior Member
Dec 18, 2000
Yes it's locked, but since it's a 100 MHz FSB CPU, it really doesn't matter. Locked multipliers are problematic when trying to O/C 133 MHz CPUs such as the old PIII "EB" chips and the Athlon XP chips. When you get the FSB up high enough for a significant O/C, you start having memory, PCI bus, and IDE problems. None of this comes into play with the Northwoods. When you O/C a P4 1.8A by increasing the FSB to 133 MHz, everything else is on spec and your CPU is screaming along at 2.4 GHz.