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Sabertooth 990fx and 8350 bus speed fluctuations

Last response: in Overclocking
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December 29, 2012 2:05:15 AM

Hello,
So I have the above components and using occt I see huge fluctuations in bus speed. Starts at 200 MHz then jumps wildly to about 240 and down to 180. This forces the CPU to jump to over 5 GHz with multiplier at 22. Even at 20 it jumps around. All the voltages and frequencies are stock and still flying around. 600w ps, 7950 gpu.

Any help would he great.
December 29, 2012 6:23:41 AM

I tried upping the voltages to the NB and CPU a bit and stiffening the regulation in the bios (forget the correct term) and didnt fix it. Also noticed when first running OCCT the multiplier is at 20.5, then drops to 20.

Should I get a new MB, I know this isnt suppose to happen. Vendor or Warranty? Anyone suggest a better 990fx board?

This is a new build and just running it through its paces when I noticed the bus speed fluctuating.

ASUS Sabertooth 990fx R2.0
FX8350
H80 cooler
COrsair Vengance 1866 - 2x4GB - windows BSOD's when memory set to 1866, currently at 1600
OCZ Vertex4 128Gb
HGST 1TB 7200 32mb
Diamond or sapphire ??? HD7950
Thermaltake TR2 600W

Thanks
!