It's a problem with the Nvidia product line. Simply it sometimes works perfectally, sometimes it takes some tweaking, and sometimes it's doomed to fail at all costs. I experienced problems with a Gemlight GMB-P58VPS containing the MVP3 chipset from Via. Then look no further. Well, compared to that one this card is far superior.
Picture is sharper and colors much better.
Its also much faster. So its not Ultra and probably a bit slower than ordinary tnt2 too. Every game I tried worked just fine and looked great.