Hey I'm new here so I hope this is the right place, i searched the web for hours trying to figure this out to no avail. I have a sapphire hd 7970 6 gb vapor x and I havent been that impressed with the performance so I was looking into overclocking etc and I downloaded GPU Z to review its running statistics and noticed that it's only running at a voltage of .875 vddc, when I've seen screen shots of others using the same or similar card the reading has always been around 1.25vddc so I'm wondering, is my video card not drawing enough voltage? If so, how can I fix this? If this card isnt running to its full potention, I'd like to fix it or return it if it's broken ASAP! By the way, im running a very nice 1500 watt power supply, sabertooth x79 mboard, i7 3930k.