I wonder if those are really the voltages you are getting. Seem a little bit out of whack to me. You might want to check your BIOS to see if it agrees with the voltages posted in Speedfan. If it does, you might be running into powersupply issues.
...that the H is so different from other hardware sites, both in tone and in the info (read: vid card reviews). Sometimes there can be a little too much snarkiness for my taste, but I always keep coming back. Keep up the good work.