I recently acquired a Cube with the stock Rage 128 video card. It's a pretty weak card and I'd like to upgrade it with something cheap. I've come across a few GeForce2 mx cards on ebay, pulled from various Power Mac models. The sellers state it will work in a Cube but according to wikipedia, the Cube shipped with a special version of the GeForce2 mx card. Is there any sort of modification involved? Do I need to add a fan? I'd rather not because the lack of sound is really nice. Also -- which Radeons will work without any significant modification (i.e. no fan)?