Is my memory actually running at 1.63 volts?

I had thought my memory was running at 1.8v based on PC Wizard's info from the memory area but when I was messing around with PC Wizard late last night and I noticed that under the Voltage, Tempature and Fans it showed my memory voltage was 1.63 volts (could have been 1.67 volts; can't remember and not at home now). That seems low and not correct since it's running dual channel and shows it be running at 400 mhz (it's DDR2 800 PC6400 memory). (I can't get into my bios to double check - it's an HP system with a locked out bios.) Is this telling me my memory is actually running at 1.63 volts or is this for something else? Does that mean that my bios is actually set to 1.63v and if I pull out all the RAM in there and replace it with new RAM (whose timings are spec'd to the standard of 1.8v) it will still run that new RAM at 1.63v (thus causing the actual timings to go down)?

Thanks