Tomasis, which bios revision is best?

here is voltage settings. What else I should increase?
http://www.part.lt/img/1e6581b1f2607...1bfccc5347.JPG

with these voltages Phenom II 925 C2 manged to reach 270FSB @3.780Ghz NB and HT multiplier's 7 and 8 worked stable for more than hour with prime 95, but with 272FSB PC it crashes after few seconds with prime 95 running.

http://www.part.lt/img/f29a6f2ccd792...aee1162390.jpg