Overclocking / Voltage relation

[ritual]

Long time reader first time poster... I know this has been discussed before but I just do not understand why my system does not work with respect to other users voltage questions.

I have a brand new watercooled rig with all the latest and the greatest. I didn't see the point in blowing $700 on a P4-2.53GHz so I got the 2.26 instead but here are my specs:

Pentium 4 2.26GHz @ 2.38GHz [140fsb] 533FSB
ASUS P4T533-C Mobo LAN/Snd
ASUS GeForce4 Ti4600 V8460
512MB PC1066 RDRam Kingston
Complete DD watercooling setup run in parallel
Avg. CPU Temp: 30*C Mobo Temp: 30*C
Load CPU Tmp: 32*C

Why is it that my system cannot go above 140fsb? It will not post if I have my system set above 140fsb. I have tried increasing voltage but it still refuses to post after the 140 mark. The hardware default voltage is VCORE 1.500.

What I don't understand is that the computer runs perfectly stable at 140 but if I go a hair over 140 it does not start.

Pictures and a write-up of my system are at this site:
http://home.san.rr.com/ritual/

This is my first watercooling rig let me know what you think!

ritual


http://home.san.rr.com/ritual/asus_files/image040.jpg

[Ben721]

Nice setup. I have the same problem with my computer. At first I couldnt get past 140 fsb. Then I raised the voltage to 1.85 and I was able to get to 143. Thats my limit.

[SkiFletch]

looks like you trapped a neon octopus in there :eek: :beer:

anyways, fsb overclocking can be limited also by the I/O voltage and peripheral cards like sound cards, lan cards, video cards, or even memory. with fsb OCing you OC the entire system, so its more than likely one of your components doesnt like the jacked out pci bus