I'm building a new rig and I want to have a card that will last a LONG time... (last time i bought the 7900 and kept it for 3-4 years... now, i'm looking to do the same with another card... I'm looking at the 5970 and the 5870... the 5970 is HOT, and I'm really wanting to get that, and I can see myself xfiring the 5870 which would cost me $800 instead of one $600 5970... (I'm assuming the 5970 has the equivalent power of 2 5870's?) anyway... I want to know your opinions...