I have a few questions about this card in quad sli. - "The SLI controller is on the inner card, and it can run fine with a passive chipset cooler" what does this mean ? what passive cooler fits? can I use mcw60s for the top card and passive for the bottom? the spacer kit listed does not work with quad sli configs? are there any other solutions besides the 120 dollar kits that do the whole card?