I am deciding between a NZXT HALE82 650W or a OCZ ModXStream Pro 700W. They are the same price with rebates/offers. One has 50 more watts, while the other has twice as many 6 pin connectors. This would allow me to crossfire another 6950 when an upgrade is needed. Or would the cards be too dated by then? Basically, my decision is based off of whether or not the Sapphire 6950 would be too dated by the time most games would need a crossfire upgrade vs. just a single card.