According to the towers specs: Maximum graphics card size: 16.0" / 406 mm
...a typical 6990 is only 12.1"
So it looks like it will fit with room to spare. Now the question is...will the card render sata connections unavailable or very hard to reach with cables.
Thx , but like you slcmike said , the question then °̩s will °̩ need to remove one of my hard drives for it to fit ?