Heres the situation, I am trying to do two gtx570s in sli. Each 570 requires two 6 pin connectors, my psu only has enough connectors for one. I am aware that there are converters that use two 4 pin molex plugs and converts them into a 6 pin plug. Is it possible/safe to use two of these adapters on the one powersupply? Will the 570s still work properly?