Hi folks, Running a 2009 4,1 Mac Pro. A few years ago I bought a 670 and flashed it with the help of this forum. It's been great but yesterday I started getting blue artefacts on the screen while playing games, which quickly descended into freezes and system hangs. Tried un/reinstalling drivers, no luck. Eventually I couldn't even boot into OSX (only game in win 7/bootcamp). Sounds like my card is dead! I'm looking to replace it, but I'm wondering if I could upgrade even further. The FAQ about cards stickied here cautions against using cards with 8-pin connectors, and it seems the top end cards now have that sort of power connection. Could anyone recommend the best card without having to change from the 2 6-pin connectors I currently use for my GPU? Many thanks!