Big problem installing a video card!

[Zlejedi]

Of course you can remove this "purple" thing.

You need to replace it with something like this:

http://www.cooling.pl/thermalright-hr05sli-chipset-cooler,produkt,1632.html

 

Edit: i've checked and this one won't work but you need to look for low profile replacement northbride cooling solutions.

Edit 2: you could also reduce the height of obstructing elements if the diffrence is minimal.