I have i7 920 and noctua nh-u12p for cooling. I changed my BCLK to 170 in bios with my multiplier at 21. I'm wondering if I can leave it like this because it seems to be a decent OC. Should I be changing other settings or can I just change the BCLK and leave everything else on auto? Also, can't I just change BCLK from windows with turboV? I find that much easier.