I get 22 sec @ 350FSB, all stock voltages, and 19 sec @ 400FSB with voltage increased, but SuperPi is the only program it will run at that speed. I guess I could loosen the timings or increase voltage, but the system is cool and stable at 350FSB at stock settings...fine with me!
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Asus P5B @ 350FSB stock voltages
E6300 @ 2450Ghz /w Thermalright MST9775 heatsink
Cooler Master case /w Hec 420w dual-rail ps
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ATI X800 XL All -in-Wonder
Seagate Barracuda 250g 7007.10