They are the same voltages you have unless you manually changed yours. Did you?
Sounds like you are confusing 'under clocking' with 'under volting'.
clock = processor/cpu speed aka MHz
volt = mV's aka voltages
When you install faux's 14b5, unless you have changed your performance settings in B28 and have 'set on boot' checked, your default
clock speeds should be 350MHz minimum and 1200MHz maximum.
The default
voltages will be the ones faux set them at, and compared to stock voltages on the stock kernel on the stock 4.0.2 VZW ROM it is considerably
under-volted. Not
under-clocked. I left these default mV values alone as Faux knows what he is doing quite well. I did, however, under-clock the CPU/Processor to 1060MHz. Normal is 1200MHz.
Stock voltages on stock VZW ICS kernel are:
1200MHZ = 1380mV
920MHz = 1317mV
700MHz = 1203mV
350MHz = 1025mV
Faux's "out-of-the-box" voltages are:
1200MHz = 1232mV
1060MHz = 1213mV
920MHz = 1185mV
810MHz = 1134mV
700MHz = 1083mV
525MHz = 1003mV
350MHz = 923mV
Of course you can take Faux's voltage settings and lower them even further. Many do with good results, some don't. Just don't set on boot in case you go too far. You'll know when you get a reboot or freeze.
Hope this explains it better