the way your poll is worded is very confusing so disregard the vote for the PCI-e slot 3 and put it PCI-e slot 2. always put the GPU in the top PCI-e x16 slot on single GPU systems. Your Owners manual for the motherboard will tell you this also.
It doesn't. It just skips straight to 'How to SLI or Crossfire' which I found quite unhelpful. Many thanks for your response though. Appreciated.