Bios was 424. The 4:5 divider is a real problem with this board but as you can see, the 2:3 divider works just fine. It's not a great mb for quads, but few P965 boards are. I have 3 680i based boards that I tried my g0 and B3 in. I finally gave up sli and switched to this board until the x38 comes out.