what case, Antec 300 Illusion.?
It's an Antec Nine Hundred Black Steel http://www.newegg.com/Product/Product.aspx?Item=N82E16811129021
Been very happy with this case. Bought it like 5 years ago too lol.
As far as the board you talking about the pci-e timing? It's 16x/8x/16x. The heatsink on the CPU is just the stock one. Not going to invest anything into it because the next board/setup will be a whole different beast.
I'll put a fan on the 3 cards to get air in between but man oh man were you right. It pulled another 1,000 marks in 3DMark.
Thanks for the input and suggestions!