not having too much luck with this L820B033 Q9650

am stable at 1.3v @ 4ghz

but with 8 multi & 500fsb it won't get past bios; which brings me to my question. I've tried as far as 1.4vcore to get it stable but no luck; but am able to do 480fsb 8.5m @ 1.4 The obvious is my subsystem like NB FSB etc but I was stable running Large FFT's at a 6multi & 500 fsb with 1.3v...

so, is 1.4v too much for 24/7 on custom H20 capping at about 60c-load?