So I have noticed that my core bus dram and nb clock speed all drop under heavy gpu load.Also these dips in the pictures jump down then slowly rise back up to full clock speeds for a couple of seconds. Is this normal? I do have my bus speed over clocked but this happens with out any overclocking. I have a PHENOM II 965 ASROCK K10n78 MOBO XFX 6870BE My psu should be enough(x2 6pin) and i think 700 watts. I have 4 harddrives as well. 4 case fans. Idk if this is normal so please help me. Thank you.