The main reason I'm concerned is that I thought a PCI-e 1.0 can give 75 watts in power and 2.1 slots can give more. The 6670 gets all its power from the PCI-e slot and doesn't have any extra power connectors. According to Anandtech (http://www.anandtech.com/bench/Product/613),
the 6670 uses 105- 220 watts which is more than I thought PCI-e 1.0s could give. I've been googling a lot about whether or not PCI-E 2.1 cards work with 1.0 and a lot of people say it's fine and a lot of people say it's not and some even say they did it and it fried their motherboard! I'm very confused and frustrated!