I was looking at a site that was in some language I've never seen before that had that last night, and Google didn't translate very good. I'm assuming this can be done on the GT's, as it is on the Ultra's. Thanks for finding this by the way
EDIT - Not really clear on where to pencil, the flash from the camera and the arrow makes it really hard to see, any help would be appreciated.
Only the Ultras can make use of this. If you have a GT, or a non-ultra, you're not going to benefit from it and you'll experience a decrease in performance. This is because the GT's don't have the same amount of capacitors as the Ultras and they only use one molex connector. Getting the GT to run anything over 1.4V will only decrease performance, believe me, I've tried, and so have many others.
Having said that, it is much easier and cleaner to mod and flash your card's BIOS to squeeze out that 1.4V. Follow CandymanCan's guide in the nvidia section.