You got a saberkitty
. There is somewhere you should go even though your vishera is only a 4 core these guys will help ALOT:
theres lots of people monitoring the thread, also theres quite a few sabertooth owners. Post your results and pictures of your bios settings (prob need a phone/camera to take the pictures). They will be quick to give you some tips and also let you know if anything is "off".
I know these settings are on crosshair boards but you may want to check into them for yours:
CPU Power Duty Control to Extreme
CPU Power Response Control to Fast
CPU Power thermal Control to 140
CPU/NB Current Capability to 130%
Dram Current Capability to 130%
These can help with keeping stable and even sometimes requires less volts on cpu so you stay cooler (results may vary).
The last 2 only really needed if you have ram higher then 1866 or your ram is overclocked, these will help with stabilizing ram (cpu/nb and dram current).
added this info to OP, will be adding more as i collect it for other mobos.