One point to note that Colin mentioned - Power Supply - BFG state that you require at least a 475w PSU with a combined 32A rating. (Make sure you've got 2 PCI-E connectors also - or 4 if you're going SLI) The Hiper Type R 580w supply that Colin was using only has a combined amp rating of 30A. This was most likely the cause of his problems. So you don't need to go mad and get a 1000w PSU. I have an Antec 550w TruePower Trio and it's more than adequate - as the three 12v lines give a combined 42A rating.