Here we connect a V-point cable to the header, now you can use any kind of multi-meter to measure either the GPU or memory voltage. It's rather excessive for the regular user, but there are LN2 overclockers out there that feel something wiggle in their pants right now.
Here you can see us monitoring the GPU core voltage, nicely steady at default 1.2 Volts.
One last photo, here the HAWK 5770 is being tested and benchmarked in the test setup. And yes ! I really need to clean up them darn cables. Let's talk installation, temps, noise and power consumption for a second.