After Burner reporting huge Voltage spikes

Hi first time poster Just had some questions about the reported voltage in AB.

I have my 7970's set to 1.037 V at 1050 clock speed (trying to see how low I can volt them and still get that clock), And everything runs fine except that Afterburner keeps reporting occasional huge voltage spikes on both cards ranging from 1.300-1.500 V.

Now I know that Afterburner reports real voltages not target ones and that some people freak out when they see how low their voltages drop due to vdroop but this is not a drop it's a very large spike.

It happens on both cards and I have seen posts by a couple of other people with the same issue.

http://hardforum.com/showthread.php?t=1665293&page=10

The guys over at hard forum seem to thinks it's normal/a Software issue but I am not sure so I figured this would probably be the best place to ask.

Thank you in advance for your help.