nice one phil... but you should be able to go way bigger than that! you'll need a hulluva lotta voltage tho... i know, you might not wanna put 1.5V+ through the core... but sometimes you just have to! lol you'll also want plenty of MCH voltage for bigger clocks too
EDIT: finally got my rig pi stable above 3.9GHz... so here's the best i could do at 3.95... had to whack out the timings a bit (not really that much, but hey, its worse than what i wanted), especially the tRFC and tRRD... anyways, i finally got it going and broke 11 seconds! 10.938 @ 3.953GHz under Vista (cuz XP doesnt wanna run over 3.9
)