Well... i guess this is proof, as if we needed it, that not all chips will react the same. using your base settings i starting clocking up. was a little nervous around 380 from your experience but i booted windows fine @380 and ran everest stress-test 10 mins to make sure it wasn't a fluke.
continued on to 390 and finally 400 with absolutely no changes to the settings whatsoever. my CPU is even under-volted at idle through droop by .04v
i'll do some stability testing now... i'm sure you're interested in Prime results. used that a lot back in the day with my abit board so i'll give it a go!
i took a screenshot for posterity...
http://i168.photobucket.com/albums/u...001/400fsb.jpg