What is the highest C1/400FSB P4 available?

[LarryJoe]

Looking to upgrade to the C1 stepping to hit 3+ghz. Running an RDRAM box, so 533 chips will not cut it.

 

[halkebul]

The fastest C1/400MHz FSB Northwood has a cpu multiplier of 26 (26x100MHz=2.6GHz). But you would need a Vapochill/LN2/Extreme-Watercooling setup just to get the processor to run at the now common 533MHz FSB. Wait until you can get a 2.2a with the C1 stepping, and you'll be almost guaranteed an overclock to 2.926GHz on stock cooling by simply increasing the FSB to 133MHz. The 2.2a with C1 stepping is going to be the next P4 1.6a!!!

 

[LarryJoe]

Thanks for the advice. I keep an eye out for it.

 

[LukFilm]

No, the fastest one is 2.5GHz with 25x multiplier....

 

[Wingznut]

Originally posted by: LukFilm
No, the fastest one is 2.5GHz with 25x multiplier....

halkebul is right. Intel offers a 400fsb 2.6ghz.

Originally posted by: Intel
533MHz system bus: 2.80 GHz, 2.66 GHz, 2.53 GHz, 2.40B GHz, 2.26 GHz
400MHz system bus: 2.60 GHz, 2.50 GHz, 2.40 GHz, 2.20 GHz, 2A GHz, 2 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz