I have only 1xPCI slot available after the second one was rendered unusable by the gfx heatsink... so I am planning to replace the mobo with a full ATX one, with 5xPCI connectors. I was thinking innitially that a uATX mobo will require a smaller case, which might be cheaper and looks better, but I am not very convinced about this anymore... and I did not get a proper HTPC case after 4 months, anyway... still sits in an old ATX case. Some soundproofing "modifications" made the sistem really quiet.
Question: is it as simple as removing the old mobo and install the new one, or the whole software needs to be re-installed? With HDD format, Windows re-install and all the rest...? Did anyone actually do this?