(Article Introduction) "Graphics card maker NVIDIA was infamous for frequently selling identical hardware in its GeForce (consumer) and Quadro (commercial) lineups, while charging 2-5 times more for Quadros. It didn't take long for some clever users to figure out how to soft mod certain cards to remove the restrictions preventing Quadro driver use on GeForce cards."
Full Article: http://www.dailytech.com/Get+R.....e20485.htm
Unlock Instructions: http://www.techpowerup.com/art.....idcard/159
Mind you, these high-end video cards are not cheap to start with and pricing begins at around $300, but for the hardcore gamer would builds computers it could still save some money.