After 6 years with my trusty Mac Pro 1,1, an awesome deal for a newer machine showed up on ebay, even with local pickup and so I've bought it last weekend. It's a 2009 MP 4,1 8-core with 2x 2.93GHz (X5570). And it's a BTO machine, came with lots of goodies 16GB RAM, 2 Superdrives, Magic Mouse, original Apple Raid card, 4x 2TB HD's, and so on. It also came with an ATI 4870 bought from Apple. My 1,1 already has a 5770 in it, original upgrade kit. So the question is, which one to choose for the 4,1 machine. Should I put the 5770 into the 4,1 and sell the 4870? Maybe with the 1,1? Which is better, regarding power consumption? Which has more power, does the 4870 start to really shine in a 4,1 where it wouldn't so much in a 1,1? 1 vs. 2 power cables? What do the experts here think the pros and cons are? Thanks.